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| chemicals used to extract gold from electronics: The Recovery Of Gold From Secondary Sources Syed Sabir, 2016-06-29 New discoveries of the properties of gold at a nanoscale, and its effective use in modern technologies, have been driving a virtual 'gold rush'. Depleting natural resources has meant that the recovery of gold continues to grow in importance and relevance.The Recovery of Gold from Secondary Sources analyses the most advanced technology in gold recovery and recycling from spent sources of mobile phones, unwanted electronic equipment and waste materials. State-of-the-art techniques of hydrometallurgical and bio-metallurgical processing, leaching, cementing, adsorbing and separation through bio-sorbents are all described in detail, providing a guide for students and researchers. Discussion of environmentally friendly methods of recovery are presented, in order to provide modern-day alternatives to previous techniques. For those interested in the study of gold recovery this book gives a comprehensive overview of current recovery, making it the ultimate source of information for students, researchers, chemists, metallurgists, environmental scientists and electronic waste recovery experts. |
| chemicals used to extract gold from electronics: Extract Gold Norman Swasey, 2022-02-24 |
| chemicals used to extract gold from electronics: Recovery and Refining of Precious Metals C.W. Ammen, 1997-07-31 This book is the product of 50+ years of hands-on physiochemical work with both ferrous and nonferrous metals and with the metallurgy of refining, extracting, and casting. Its purpose is to cover the various methods of recovery and refining of precious metals. Both primary sources (placer gold, black sand, and ores) and secondary sources (scrap jewelry, electronic scrap, old films, buffings, spent plating and stripping solutions, catalytic automobile converters, and old eyeglass frames) are covered. The information contained in this volume is very basic and is intended for hands-on application and use. It is for nonchemist and chemist alike. I will not discuss the mathematical formulas for the various chemical reactions that take place-I leave them to the reader who wants to increase his working knowledge and understanding of chemistry. There are many courses offered in chemistry and extractive metallurgy, as well as a number of books available for self-study. The purpose of this book is to teach you how to perform various extractive, refining, and testing operations on precious metals (in various forms and states), with a resulting end product. You will learn how to perform operations in assaying and extraction, qualitative analysis, quantitative analysis, testing, classifying, and concentration-some of a purely mechanical nature, some of a chemical nature. |
| chemicals used to extract gold from electronics: Refining Precious Metal Wastes, Gold--silver--platinum Metals Calm Morrison Hoke, 1978 |
| chemicals used to extract gold from electronics: CRC Handbook of Metal Etchants Perrin Walker, William H. Tarn, 1990-12-11 This publication presents cleaning and etching solutions, their applications, and results on inorganic materials. It is a comprehensive collection of etching and cleaning solutions in a single source. Chemical formulas are presented in one of three standard formats - general, electrolytic or ionized gas formats - to insure inclusion of all necessary operational data as shown in references that accompany each numbered formula. The book describes other applications of specific solutions, including their use on other metals or metallic compounds. Physical properties, association of natural and man-made minerals, and materials are shown in relationship to crystal structure, special processing techniques and solid state devices and assemblies fabricated. This publication also presents a number of organic materials which are widely used in handling and general processing...waxes, plastics, and lacquers for example. It is useful to individuals involved in study, development, and processing of metals and metallic compounds. It is invaluable for readers from the college level to industrial R & D and full-scale device fabrication, testing and sales. Scientific disciplines, work areas and individuals with great interest include: chemistry, physics, metallurgy, geology, solid state, ceramic and glass, research libraries, individuals dealing with chemical processing of inorganic materials, societies and schools. |
| chemicals used to extract gold from electronics: High Tech Trash Elizabeth Grossman, 2006-05-06 The Digital Age was expected to usher in an era of clean production, an alternative to smokestack industries and their pollutants. But as environmental journalist Elizabeth Grossman reveals in this penetrating analysis of high tech manufacture and disposal, digital may be sleek, but it's anything but clean. Deep within every electronic device lie toxic materials that make up the bits and bytes, a complex thicket of lead, mercury, cadmium, plastics, and a host of other often harmful ingredients. High Tech Trash is a wake-up call to the importance of the e-waste issue and the health hazards involved. Americans alone own more than two billion pieces of high tech electronics and discard five to seven million tons each year. As a result, electronic waste already makes up more than two-thirds of the heavy metals and 40 percent of the lead found in our landfills. But the problem goes far beyond American shores, most tragically to the cities in China and India where shiploads of discarded electronics arrive daily. There, they are recycled-picked apart by hand, exposing thousands of workers and community residents to toxics. As Grossman notes, This is a story in which we all play a part, whether we know it or not. If you sit at a desk in an office, talk to friends on your cell phone, watch television, listen to music on headphones, are a child in Guangdong, or a native of the Arctic, you are part of this story. The answers lie in changing how we design, manufacture, and dispose of high tech electronics. Europe has led the way in regulating materials used in electronic devices and in e-waste recycling. But in the United States many have yet to recognize the persistent human health and environmental effects of the toxics in high tech devices. If Silent Spring brought national attention to the dangers of DDT and other pesticides, High Tech Trash could do the same for a new generation of technology's products. |
| chemicals used to extract gold from electronics: E-Waste in Transition Florin-Constantin Mihai, 2016-06-29 E-waste management is a serious challenge across developed, transition, and developing countries because of the consumer society and the globalization process. E-waste is a fast-growing waste stream which needs more attention of international organizations, governments, and local authorities in order to improve the current waste management practices. The book reveals the pollution side of this waste stream with critical implications on the environment and public health, and also it points out the resource side which must be further developed under the circular economy framework with respect to safety regulations. In this context, complicated patterns at the global scale emerge under legal and illegal e-waste trades. The linkages between developed and developing countries and key issues of e-waste management sector are further examined in the book. |
| chemicals used to extract gold from electronics: Gold Refining George J. Gajda, 1976 |
| chemicals used to extract gold from electronics: Sustainable Inorganic Chemistry David A. Atwood, 2016-10-17 The Earth's natural resources are finite and easily compromised by contamination from industrial chemicals and byproducts from the degradation of consumer products. The growing field of green and sustainable chemistry seeks to address this through the development of products and processes that are environmentally benign while remaining economically viable. Inorganic chemistry plays a critical role in this endeavor in areas such as resource extraction and isolation, renewable energy, catalytic processes, waste minimization and avoidance, and renewable industrial feedstocks. Sustainable Inorganic Chemistry presents a comprehensive overview of the many new developments taking place in this rapidly expanding field, in articles that discuss fundamental concepts alongside cutting-edge developments and applications. The volume includes educational reviews from leading scientists on a broad range of topics including: inorganic resources, sustainable synthetic methods, alternative reaction conditions, heterogeneous catalysis, photocatalysis, sustainable nanomaterials, renewable and clean fuels, water treatment and remediation, waste valorization and life cycle sustainability assessment. The content from this book will be added online to the Encyclopedia of Inorganic and Bioinorganic Chemistry. |
| chemicals used to extract gold from electronics: Digital Rubbish Jennifer Gabrys, 2013-04-26 This is a study of the material life of information and its devices; of electronic waste in its physical and electronic incarnations; a cultural and material mapping of the spaces where electronics in the form of both hardware and information accumulate, break down, or are stowed away. Where other studies have addressed digital technology through a focus on its immateriality or virtual qualities, Gabrys traces the material, spatial, cultural and political infrastructures that enable the emergence and dissolution of these technologies. In the course of her book, she explores five interrelated spaces where electronics fall apart: from Silicon Valley to Nasdaq, from containers bound for China to museums and archives that preserve obsolete electronics as cultural artifacts, to the landfill as material repository. Digital Rubbish: A Natural History of Electronics describes the materiality of electronics from a unique perspective, examining the multiple forms of waste that electronics create as evidence of the resources, labor, and imaginaries that are bundled into these machines. Ranging across studies of media and technology, as well as environments, geography, and design, Jennifer Gabrys draws together the far-reaching material and cultural processes that enable the making and breaking of these technologies. |
| chemicals used to extract gold from electronics: Minerals, Critical Minerals, and the U.S. Economy National Research Council, Division on Earth and Life Studies, Board on Earth Sciences and Resources, Committee on Earth Resources, Committee on Critical Mineral Impacts of the U.S. Economy, 2008-03-11 Minerals are part of virtually every product we use. Common examples include copper used in electrical wiring and titanium used to make airplane frames and paint pigments. The Information Age has ushered in a number of new mineral uses in a number of products including cell phones (e.g., tantalum) and liquid crystal displays (e.g., indium). For some minerals, such as the platinum group metals used to make cataytic converters in cars, there is no substitute. If the supply of any given mineral were to become restricted, consumers and sectors of the U.S. economy could be significantly affected. Risks to minerals supplies can include a sudden increase in demand or the possibility that natural ores can be exhausted or become too difficult to extract. Minerals are more vulnerable to supply restrictions if they come from a limited number of mines, mining companies, or nations. Baseline information on minerals is currently collected at the federal level, but no established methodology has existed to identify potentially critical minerals. This book develops such a methodology and suggests an enhanced federal initiative to collect and analyze the additional data needed to support this type of tool. |
| chemicals used to extract gold from electronics: WEEE Recycling Alexandre Chagnes, Gérard Cote, Christian Ekberg, Mikael Nilsson, Teodora Retegan, 2016-07-26 WEEE Recycling: Research, Development, and Policies covers policies, research, development, and challenges in recycling of waste electrical and electronic equipment (WEEE). The book introduces WEEE management and then covers the environmental, economic, and societal applications of e-waste recycling, focusing on the technical challenges to designing efficient and sustainable recycling processes—including physical separation, pyrometallurgical, and hydrometallurgical processes. The development of processes for recovering strategic and critical metals from urban mining is a priority for many countries, especially those having few available ores mining. - Describes the two metallurgical processes—hydro- and pyro-metallurgy—and their application in recycling of metals - Provides a life cycle analysis in the WEEE recycling of metals - Outlines how to determine economic parameters in the recycling of waste metals - Discusses the socio economic and environmental implication of metal recycling |
| chemicals used to extract gold from electronics: Electronic Waste Management and Treatment Technology Majeti Narasimha Vara Prasad, Meththika Vithanage, 2019-03-14 Electronic Waste Management and Treatment Technology applies the latest research for designing waste treatment and disposal strategies. Written for researchers who are exploring this emerging topic, the book begins with a short, but rigorous, discussion of electric waste management that outlines common hazardous materials. such as mercury, lead, silver and flame-retardants. The book also discusses the fate of metals contained in waste electrical and electronic equipment in municipal waste treatment. Materials and methods for the remediation, recycling and treatment of plastic waste collected from waste electrical and electronic equipment (WEEE) are also covered. Finally, the book covers the depollution benchmarks for capacitors, batteries and printed circuit boards from waste electrical and electronic equipment (WEEE) and the recovery of waste printed circuit boards through pyrometallurgy. - Describes depollution benchmarks for capacitors, batteries and printed wiring boards from waste electronics - Covers metals contained in waste electrical and electronic equipment in municipal waste - Provides tactics for the recycling of mixed plastic waste from electrical and electronic equipment |
| chemicals used to extract gold from electronics: Evolutionary and Revolutionary Technologies for Mining National Research Council, Committee on Earth Resources, Board on Earth Sciences and Resources, National Materials Advisory Board, Committee on Technologies for the Mining Industries, 2002-03-14 The Office of Industrial Technologies (OIT) of the U. S. Department of Energy commissioned the National Research Council (NRC) to undertake a study on required technologies for the Mining Industries of the Future Program to complement information provided to the program by the National Mining Association. Subsequently, the National Institute for Occupational Safety and Health also became a sponsor of this study, and the Statement of Task was expanded to include health and safety. The overall objectives of this study are: (a) to review available information on the U.S. mining industry; (b) to identify critical research and development needs related to the exploration, mining, and processing of coal, minerals, and metals; and (c) to examine the federal contribution to research and development in mining processes. |
| chemicals used to extract gold from electronics: Series on Emission Scenario Documents Chemicals Used in the Electronics Industry OECD, 2014-09-03 This emission scenario document (ESD) for chemicals used in the electronics industry provides information on the sources and release pathways of chemicals during various processing techniques in this varied industry sector, to help estimate releases of chemicals into the environment. |
| chemicals used to extract gold from electronics: Chemistry of Gold Extraction Mineekshi Awasthi, 2015-03 Gold extraction or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of small gold nuggets and flakes. Placer mining techniques since the mid to late 20th century have generally only been the practice of artisan miners. Hydraulic mining was used widely in the Californian gold rush, and involved breaking down alluvial deposits with high-pressure jets of water. Hard rock ores have formed the basis of the majority of commercial gold recovery operations since the middle of the 20th century where open pit and or sub-surface mining techniques are used. |
| chemicals used to extract gold from electronics: Biotechnology of Metals K.A. Natarajan, 2018-06-13 Biotechnology of Metals: Principles, Recovery Methods and Environmental Concerns deals with all aspects of metal biotechnology in different areas, such as biogenesis, biomaterials, biomimetic strategies, biohydrometallurgy, mineral biobeneficiation, electrobioleaching, microbial corrosion, human implants, concrete biocorrosion, microbiology of environment pollution, and bioremediation. As the technology of this interdisciplinary science has diversified over the last five years, this book provides a valuable source for scientists and students in a number of disciplines, including geology, chemistry, metallurgy, microbiology, chemical engineering, environment, civil engineering, and biomedical engineering. - Offers comprehensive coverage of an interdisciplinary subject - Outlines the role of microbiology and biotechnology in mining, metallurgy, waste disposal and environmental control - Covers new topics, such as biogenesis, biomaterials processing, the role of micro-organisms in causing corrosion, and much more - Presents scientifically illustrated experimental research methods in metals biotechnology |
| chemicals used to extract gold from electronics: Investing in Gold: The Essential Safe Haven Investment for Every Portfolio Jonathan Spall, 2008-12-01 Can you afford not to buy gold? As many investors know, gold is a “safe-haven” asset that can actually increase in value during stock market slides and times of recession. But what else do you really know about this commodity? Are you taking full advantage of it? Do you know how to work it into your overall investment strategy? This detailed tutorial provides you with a comprehensive understanding of gold, from mine to market. Jonathan Spall, a 25-year veteran of the metals market, explains everything you'll need to know for making gold a profitable part of your investment strategy. Investing in Gold gives you an inside look at how the precious metal is mined, refined, traded, and priced, along with valuable insight into gold's unique position in the marketplace. Spall explores such topics as: Simple and complex gold trading processes The pivotal role central banks play in the gold market Gold exchange traded funds (ETFs) How spot gold is traded Why gold mining companies have traditionally hedged and why they no longer do so Strategies for investing in the retail market Spall provides an extensive glossary of terms you'll need to know, and he debunks various myths regarding this market, including the Fed's supposed scheme to keep gold prices artificially low during the 1990s. The effects of global economic growth, the weakened dollar, the credit crunch, and the recent creation of enormous funds each affect the gold market; put them together and they add up to potential profits gold investors have never before dreamed of. Gold is a surprisingly small market. When you learn how to navigate it, the potential for excellent rewards becomes evident. |
| chemicals used to extract gold from electronics: Hydrometallurgy ’94 Institution of Mining & Metallurgy, 2012-12-06 Hydrometallurgy '94 contains the 78 papers that were presented at the international symposium organized by the Institution of Mining and Metallurgy and the Society of Chemical Industry and held in Cambridge, England, in July 1994. In the papers specific attention is paid to the concept of sustainable development and the associated ideas of cleaner technology, recycling and waste minimization that have particular relevance to the extractiona nd processing of metals and other mineral products. The papers, by authors from 30 contries, are grouped under the headings: Hydrometallurgy and Sustainable Development; Materials Production and the Environment; Fundamentals; Leaching; Bioprocessing; Gold Solution Purification; Effluent Treatment; Processes; and Recycling. |
| chemicals used to extract gold from electronics: Electronic Waste and Printed Circuit Board Recycling Technologies Muammer Kaya, 2019-10-17 This book covers state-of-the-art technologies, principles, methods and industrial applications of electronic waste (e-waste) and waste PCB (WPCB) recycling. It focuses on cutting-edge mechanical separation processes and pyro- and hydro-metallurgical treatment methods. De-soldering, selective dismantling, and dry separation methods (including the use of gravity, magnetic and electrostatic techniques) are discussed in detail, noting the patents related to each. The volume discusses the available industrial equipment and plant flowsheets used for WPCB recycling in detail, while addressing potential future directions of the field. This practical, comprehensive, and multidisciplinary reference will appeal to professionals throughout global industrial, academic and government institutions interested in addressing the growing problem of e-waste. Covers principles, methods and industrial applications of e-waste and PCB recycling; Details state-of-the-art mechanical separation processes and pyro- and hydro-metallurgical treatment methods; Describes the available industrial equipment used and plant flowsheets for PCB recycling and addresses potential future developments of this important field. |
| chemicals used to extract gold from electronics: Impacts of artisanal gold and diamond mining on livelihoods and the environment in the Sangha Tri-National Park landscape Tieguhong Julius Chupezi, Verina Ingram, Jolien Schure, 2009 |
| chemicals used to extract gold from electronics: The Chemistry of Gold Extraction John Marsden, Iain House, 2006 Extensively revised and updated, this edition provides the broad base of knowledge required by all working in the gold extraction and gold processing industries. It bridges the gap between research and industry by emphasizing practical applications of chemical principles and techniques. |
| chemicals used to extract gold from electronics: Extractive Metallurgy of Nickel, Cobalt and Platinum Group Metals Frank Crundwell, Michael Moats, Venkoba Ramachandran, Timothy Robinson, W. G. Davenport, 2011-07-18 This book describes and explains the methods by which three related ores and recyclables are made into high purity metals and chemicals, for materials processing. It focuses on present day processes and future developments rather than historical processes. Nickel, cobalt and platinum group metals are key elements for materials processing. They occur together in one book because they (i) map together on the periodic table (ii) occur together in many ores and (iii) are natural partners for further materials processing and materials manufacturing. They all are, for example, important catalysts – with platinum group metals being especially important for reducing car and truck emissions. Stainless steels and CoNiFe airplane engine super alloys are examples of practical usage. The product emphasises a sequential, building-block approach to the subject gained through the author's previous writings (particularly Extractive Metallurgy of Copper in four editions) and extensive experience. Due to the multiple metals involved and because each metal originates in several types of ore – e.g. tropical ores and arctic ores this necessitates a multi-contributor work drawing from multiple networks and both engineering and science. - Synthesizes detailed review of the fundamental chemistry and physics of extractive metallurgy with practical lessons from industrial consultancies at the leading international plants - Discusses Nickel, Cobalt and Platinum Group Metals for the first time in one book - Reviews extraction of multiple metals from the same tropical or arctic ore - Industrial, international and multidisciplinary focus on current standards of production supports best practice use of industrial resources |
| chemicals used to extract gold from electronics: Information on Chemicals in Electronic Products Nardono Nimpuno, Caroline Scruggs, Nordic Council of Ministers, 2011 Many chemicals used in the electronics sector have negative consequences for human and environmental health. These include chemicals such as lead, mercury, brominated flame retardants, halogenated flame retardants, polyvinyl chloride (PVC) and phthalates. Typical electronic waste handling practices in developing countries are detrimental to the health of workers, their environment, and their communities. There are issues associated also with formal recycling in modern facilities, and the production phase is often problematic as well, with electronics workers potentially being exposed to carcinogens and reproductive toxicants. In addition, it is becoming apparent that recycling of valuable materials must be made more efficient as the price of virgin materials, metals, and minerals increases and their availability decreases. The problems are exacerbated by the fact that there has been a rapid increase in sales of electronics in the past several years, making e-waste one of the fastest-growing waste streams today. In order to minimise any potential risks to human or environmental health, electronics stakeholders in different stages of the life cycle of electronic products need information on what chemicals are present in the products, their properties, use and potential risks. This report studies the extent to which existing information systems meet the needs of different stakeholder groups, highlights information gaps and obstacles and discusses potential solutions to optimise the flow of information on chemicals in electronics. The report is carried out within the UNEP project on Chemicals in Products. |
| chemicals used to extract gold from electronics: Critical Mineral Resources of the United States K. J. Schulz, John H. DeYoung, Robert R. Seal, Dwight C. Bradley, 2017 As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities. |
| chemicals used to extract gold from electronics: Cross-Coupling Reactions Norio Miyaura, 2003-07-01 In 1972, a very powerful catalytic cycle for carbon-carbon bond formation was 2 first discovered by the coupling reaction of Grignard reagents at the sp -carbon. Over the past 30 years, the protocol has been substantially improved and expanded to other coupling reactions of Li,B,N,O,Al,Si,P,S,Cu,Mn,Zn,In,Sn, and Hg compounds. These reactions provided an indispensable and simple methodology for preparative organic chemists. Due to the simplicity and rel- bility in the carbon-carbon, carbon-heteroatom, and carbon-metalloid bo- formations,as well as high efficiency of the catalytic process,the reactions have been widely employed by organic chemists in various fields. Application of the protocol ranges from various syntheses of complex natural products to the preparation of biologically relevant molecules including drugs, and of sup- molecules, and to functional materials. The reactions on solid surfaces allow robot synthesis and combinatorial synthesis. Now, many organic chemists do not hesitate to use transition metal complexes for the transformation of org- ic molecules. Indeed, innumerable organic syntheses have been realized by the catalyzed reactions of transition metal complexes that are not achievable by t- ditional synthetic methods. Among these, the metal-catalyzed cross-coupling reactions have undoubtedly contributed greatly to the development of such a new area of “metal-catalyzed organic syntheses”. An excellent monograph for the cross-coupling reactions and other met- catalyzed C-C bond-forming reactions recently appeared in Metal-catalyzed Cross-coupling Reactions (Wiley-VCH,1998). |
| chemicals used to extract gold from electronics: The Extractive Metallurgy of Gold John C. Yannopoulos, 2012-12-06 The history of gold begins in antiquity. Bits of gold were found in Spanish caves that were used by Paleolithic people around 40,000 B.C. Gold is the child of Zeus, wrote the Greek poet Pindar. The Romans called the yellow metal aurum (shining dawn). Gold is the first element and first metal mentioned in the Bible, where it appears in more than 400 references. This book provides the most thorough and up-to-date information available on the extraction of gold from its ores, starting with the miner alogy of gold ores and ending with details of refining. Each chapter con cludes with a list of references including full publication information for all works cited. Sources preceded by an asterisk (*) are especially recom mended for more in-depth study. Nine appendices, helpful to both students and operators, complement the text. I have made every attempt to keep abreast of recent technical literature on the extraction of gold. Original publications through the spring of 1989 have been reviewed and cited where appropriate. This book is intended as a reference for operators, managers, and designers of gold mills and for professional prospectors. It is also designed as a textbook for extractive metallurgy courses. I am indebted to the Library of Engineering Societies in New York, which was the main source of the references in the book. The assistance of my son, Panos, in typing the manuscript is gratefully acknowledged. |
| chemicals used to extract gold from electronics: How To Smelt Your Gold & Silver Jr Hank Chapman, 2019-06-14 What's Inside? The only smelting information currently available. A complete plain English step-by-step guide for the amateur or professional. Illustrated in both color and B&W. Includes flux formulas for gold, Silver and alloys of both. Information on smelting precipitates, placer gold, scrap, concentrate, amalgam, and carbon ash. This book has a complete glossary, a supplier's index, conversion tables, equipment sources, information on what can or can't be smelted, and a comprehensive chapter on safety. Hints on how to sell your gold for more money, security, record keeping, dealing with the IRS, and more. Very easy to use and understand. Price includes technical support by the author. |
| chemicals used to extract gold from electronics: Electronic Waste Management Ronald E. Hester, Roy M. Harrison, 2009 Electronic waste contains toxic and carcinogenic compounds, which can pose a risk to the environment. This title discusses the directive and examines legislation in the USA and other parts of the world, considering the opportunities and threats posed by this form of waste. |
| chemicals used to extract gold from electronics: Gold Ore Processing Mike D. Adams, 2016-05-03 Gold Ore Processing: Project Development and Operations, Second Edition, brings together all the technical aspects relevant to modern gold ore processing, offering a practical perspective that is vital to the successful and responsible development, operation, and closure of any gold ore processing operation. This completely updated edition features coverage of established, newly implemented, and emerging technologies; updated case studies; and additional topics, including automated mineralogy and geometallurgy, cyanide code compliance, recovery of gold from e-waste, handling of gaseous emissions, mercury and arsenic, emerging non-cyanide leaching systems, hydro re-mining, water management, solid–liquid separation, and treatment of challenging ores such as double refractory carbonaceous sulfides. Outlining best practices in gold processing from a variety of perspectives, Gold Ore Processing: Project Development and Operations is a must-have reference for anyone working in the gold industry, including metallurgists, geologists, chemists, mining engineers, and many others. - Includes several new chapters presenting established, newly implemented, and emerging technologies in gold ore processing - Covers all aspects of gold ore processing, from feasibility and development stages through environmentally responsible operations, to the rehabilitation stage - Offers a mineralogy-based approach to gold ore process flowsheet development that has application to multiple ore types |
| chemicals used to extract gold from electronics: Make: Electronics Charles Platt, 2015-09-07 A hands-on primer for the new electronics enthusiast--Cover. |
| chemicals used to extract gold from electronics: Plant Synthetic Biology Matias D. Zurbriggen, 2022-02-22 This volume provides methods on different aspects and applications on plants, algae, photosynthetic bacteria, synthetic construct design, and multiplex cloning. Chapters cover multiple aspects of synthetic metabolic, photosynthetic systems, metabolic and signaling pathways, advanced engineering of metabolic networks, isolation of organelles and co-culture of microorganisms, and methods for the on command manipulation of the relative stability of proteins. Written in the format of the highly successful Methods in Molecular Biology series, each chapter includes an introduction to the topic, lists necessary materials and reagents, includes tips on troubleshooting and known pitfalls, and step-by-step, readily reproducible protocols. Authoritative and cutting-edge, Plant Synthetic Biology: Methods and Protocols aims to be a useful resource for both researchers starting to explore novel experimental avenues as well as for experts willing to expand their portfolio of tools and strategies. |
| chemicals used to extract gold from electronics: Mercury from Gold and Silver Mining Luiz D.de Lacerda, Wim Salomons, 2012-12-06 Due to its inherent characteristics, mercury contamination from gold mining is a major environmental problem compared to past mercury contamination from industrial point sources. The worsening of social-economical conditions and increasing gold prices in the late 1970s resulted in a new rush for gold by individual entrepreneurs for whom Hg amalgamation is a cheap and easily carried out operation. Even after the present-day mining areas are exhausted, the mercury left behind will remain part of the biochemical cycle of the tropical forest. This book reviews the current information on mercury from gold mining, its cycling in the environment and its long-term ecotoxicological impact. The book is illustrated with numerous diagrams and photographs. |
| chemicals used to extract gold from electronics: The Routledge Companion to Labor and Media Richard Maxwell, 2015-07-16 Labor resides at the center of all media and communication production, from the workers who create the information technologies that form the dynamic core of the global capitalist system and the designers who create media content to the salvage workers who dismantle the industry’s high-tech trash. The Routledge Companion to Labor and Media is the first book to bring together representative research from the diverse body of scholarly work surrounding this often fragmentary field, and seeks to provide a comprehensive resource for the study and teaching of media and labor. Essays examine work on the mostly unglamorous side of media and cultural production, technology manufacture, and every occupation in between. Specifically, this book features: -wide-ranging international case studies spanning the major global hubs of media labor; -interdisciplinary approaches for thinking about and analyzing class and labor in information communication technology (ICT), consumer electronics (CE), and media/cultural production; -an overview of global political economic conditions affecting media workers; -reports on chemical environments and their effect on the health of media workers and consumers; -activist scholarship on media and labor, and inspiring stories of resistance and solidarity. |
| chemicals used to extract gold from electronics: Hydrometallurgy Michael Free, 2013-10-07 This book provides a college-level overview of chemical processing of metals in water-based solutions, in the field that is known as hydrometallurgy-- |
| chemicals used to extract gold from electronics: Waste Trevor Letcher, Daniel A. Vallero, 2011-01-20 Waste: A Handbook for Management gives the broadest, most complete coverage of waste in our society. The book examines a wide range of waste streams, including: - Household waste (compostable material, paper, glass, textiles, household chemicals, plastic, water, and e-waste) - Industrial waste (metals, building materials, tires, medical, batteries, hazardous mining, and nuclear) - Societal waste (ocean, military, and space) - The future of landfills and incinerators Covering all the issues related to waste in one volume helps lead to comparisons, synergistic solutions, and a more informed society. In addition, the book offers the best ways of managing waste problems through recycling, incineration, landfill and other processes. - Co-author Daniel Vallero interviewed on NBC's Today show for a segment on recycling - Scientific and non-biased overviews will assist scientists, technicians, engineers, and government leaders - Covers all main types of waste, including household, industrial, and societal - Strong focus on management and recycling provides solutions |
| chemicals used to extract gold from electronics: Noble and Precious Metals Mohindar Seehra, Alan Bristow, 2018-07-04 The use of copper, silver, gold and platinum in jewelry as a measure of wealth is well known. This book contains 19 chapters written by international authors on other uses and applications of noble and precious metals (copper, silver, gold, platinum, palladium, iridium, osmium, rhodium, ruthenium, and rhenium). The topics covered include surface-enhanced Raman scattering, quantum dots, synthesis and properties of nanostructures, and its applications in the diverse fields such as high-tech engineering, nanotechnology, catalysis, and biomedical applications. The basis for these applications is their high-free electron concentrations combined with high-temperature stability and corrosion resistance and methods developed for synthesizing nanostructures. Recent developments in all these areas with up-to-date references are emphasized. |
| chemicals used to extract gold from electronics: Advances in Mineral Processing and Hydrometallurgy Corby G Anderson, Hao Cui, 2021-09-23 This is a Special Issue of Metals devoted to aspects of Advances in Mineral Processing and Hydrometallurgy. This includes a global call for article submissions that also included Characterization along with Recycling and Waste Minimization. As such, both primary and recycled aspects will be considered. Possible specific topics included Mineralogy, Geometallurgy, Thermodynamics, Kinetics, Comminution, Classification, Physical Separations, Liquid-Solid Separations, Leaching, Solvent Extraction, Ion Exchange, Activated Carbon, Precipitation, Reduction, Process Economics and Process Control. Suggested application areas were in Gold, Silver, PGM's, Aluminum, Copper, Zinc, Lead, Nickel, and Titanium. Critical Metals articles on topics such as Lithium, Antimony Tellurium, Gallium, Germanium, Cobalt, Graphite, Indium, and Rare Earth were also welcome. As such, this Special Issue of Metals was well supported by diverse submissions and the final publication of high-quality peer-reviewed articles. |
| chemicals used to extract gold from electronics: Ionic Liquids in Separation Technology Antonia Perez De Los Rios, Francisco Jose Hernandez Fernandez, 2014-08-08 Ionic Liquids in Separation Technology reports on the most important fundamental and technological advances in separation processes using ionic liquids. It brings together the latest developments in this fascinating field, supplements them with numerous practical tips, and thus provides those working in both research and industry with an indispensable source of information. The book covers fundamental topics of physical, thermal, and optical properties of ionic liquids, including green aspects. It then moves on to contexts and applications, including separation of proteins, reduction of environmental pollutants, separation of metal ions and organic compounds, use in electrochromic devices, and much more. For the specialist audience the book serves as a recompilation of the most important knowledge in this field, whereas for starting researchers in ionic liquid separation technology the book is a great introduction to the field. - First book in the marketplace dedicated to ionic liquids in separation technology - Contributions from scientists in academia and researchers in industry ensure the coverage of both scientific fundamentals and industrial applications - Covers a broad collection of applications in separation technology which makes the book a single source of information - Includes many practical tips for researchers in industry and scientists who apply ionic liquids in their work |
| chemicals used to extract gold from electronics: Uranium Extraction Technology International Atomic Energy Agency, 1993 The purpose of this publication is to update and expand the first edition, which was published in 1983, and to report on later advances in uranium ore processing. It includes background information about the principles of the unit operations used in uranium ore processing and summarizes the current state of the art. Extensive references provide sources for specific technological details. |
PubChem
Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and …
Chemical substance - Wikipedia
A chemical substance is a unique form of matter with constant chemical composition and characteristic properties. [1][2] Chemical substances may take the form of a single element or …
What Is a Chemical? Definition and Examples - Science Notes …
Oct 15, 2023 · In everyday usage, a “chemical” often refers to an undesirable additive or contaminant. For example, pesticides in water or artificial colorings in food are “chemicals.” …
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Apr 2, 2025 · Learn how to safely handle chemicals, the effects of certain toxins, which substances are controlled or managed, and safer alternatives.
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What Is a Chemical and What Isn't a Chemical? - ThoughtCo
Dec 7, 2019 · Light, heat, and sound are not chemicals since they are not made of matter. Chemicals can be both natural, like oxygen, or artificial, like stainless steel.
Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Apr 24, 2025 · chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the …
Chemical Common Names and Formulas - Science Notes and …
Apr 4, 2020 · This is a list of archaic chemical names and common names for chemicals, with their modern or IUPAC equivalent name. The chemical formula of each chemical is provided, …
Chemical compound | Definition, Examples, & Types | Britannica
chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements. water molecule A water molecule is made up of two hydrogen …
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Apr 25, 2025 · Whether you’re a safety officer, lab technician, factory worker, or employer, understanding chemical hazards isn’t just a compliance requirement—it’s a vital step in …
PubChem
Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and …
Chemical substance - Wikipedia
A chemical substance is a unique form of matter with constant chemical composition and characteristic properties. [1][2] Chemical substances may take the form of a single element or …
What Is a Chemical? Definition and Examples - Science Notes and …
Oct 15, 2023 · In everyday usage, a “chemical” often refers to an undesirable additive or contaminant. For example, pesticides in water or artificial colorings in food are “chemicals.” …
Chemicals, Pesticides and Toxics Topics | US EPA
Apr 2, 2025 · Learn how to safely handle chemicals, the effects of certain toxins, which substances are controlled or managed, and safer alternatives.
What is a Chemical - NRC
Mar 19, 2020 · The Nuclear Regulatory Commission's Science 101: What is a Chemical? A chemical is any substance that has a defined composition. In other words, a chemical is …
What Is a Chemical and What Isn't a Chemical? - ThoughtCo
Dec 7, 2019 · Light, heat, and sound are not chemicals since they are not made of matter. Chemicals can be both natural, like oxygen, or artificial, like stainless steel.
Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Apr 24, 2025 · chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the …
Chemical Common Names and Formulas - Science Notes and …
Apr 4, 2020 · This is a list of archaic chemical names and common names for chemicals, with their modern or IUPAC equivalent name. The chemical formula of each chemical is provided, …
Chemical compound | Definition, Examples, & Types | Britannica
chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements. water molecule A water molecule is made up of two hydrogen …
10 Types Of Chemicals and How to Manage Them - Occupational …
Apr 25, 2025 · Whether you’re a safety officer, lab technician, factory worker, or employer, understanding chemical hazards isn’t just a compliance requirement—it’s a vital step in …
