Download or read book The Recovery of Gold from Secondary Sources written by Syed Sabir and published by World Scientific. This book was released on 2016-06-29 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. Contents: Introduction (S Syed)Leaching of Gold from the Spent/End-of-Life Mobile Phone-PCBs using "Greener Reagents" (Jae-chun Lee and Rajiv R Srivastava)Electroless Displacement Deposition of Gold from Aqueous Source — Recovery from Waste Electrical and Electronic Equipment (WEEE) using Waste Silicon Powder (Kenji Fukuda and Shinji Yae)Adsorption of Gold on Granular Activated Carbons and New Sources of Renewable and Eco-Friendly Activated Carbons (Gerrard Eddy Jai Poinern, Shashi Sharma, and Derek Fawcett)Development of Novel Biosorbents for Gold and Their Application for the Recovery of Gold from Spent Mobile Phones (Katsutoshi Inoue, Manju Gurung, Hidetaka Kawakita, Keisuke Ohto, Durga Parajuli, Bimala Pangeni, and Shafiq Alam)Environmentally Friendly Processes for the Recovery of Gold from Waste Electrical and Electronic Equipment (WEEE): A Review (Isabella Lancellotti, Roberto Giovanardi, Elena Bursi, and Luisa Barbieri)Study on the Influence of Various Factors in the Hydrometallurgical Processing of Waste Electronic Materials for Gold Recovery (I Birloaga and F Vegliò) Readership: Students, researchers, chemists, metallurgists, environmental scientists and electronic waste recovery experts.

Download or read book Rare Metal Technology 2015 written by Neale Neelameggham and published by Springer. This book was released on 2016-12-01 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents the papers from a symposium on extraction of rare metals as well as rare extraction processing techniques used in metal production. Paper topics include the extraction and processing of elements like antimony, arsenic, calcium, chromium, hafnium, gold, indium, lithium, molybdenum, niobium, rare earth metals, rhenium, scandium, selenium, silver, strontium, tantalum, tellurium, tin, tungsten, vanadium, and zirconium. Rare processing techniques presented include bio leaching, molecular recognition technology, recovery of valuable components of commodity metals such as magnesium from laterite process wastes, titanium from ilmenites, and rare metals from wastes such as phosphors and LCD monitors.

Download or read book Elements of Bioeconomy written by Krzysztof Biernat and published by BoD – Books on Demand. This book was released on 2019-10-23 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a review of the basic problems associated with the implementation of bioeconomic processes. The book contains chapters developed by teams from different countries of the world and therefore the chapters correspond to the degree of advancement of the areas within the bioeconomy in these countries. In selected areas, basic concepts and selected technological processes that create this area of the economy to ensure sustainable development have been characterized.

Download or read book Metal Recovery from Electronic Waste Biological Versus Chemical Leaching for Recovery of Copper and Gold written by Arda Işildar and published by CRC Press. This book was released on 2018-10-30 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Waste electrical and electronic equipment (WEEE) generation is a global problem. Despite the growing awareness and deterring legislation, most of the WEEE is disposed improperly, i.e. landfilled or otherwise shipped overseas, and treated in sub-standard conditions. Informal recycling of WEEE has catastrophic effects on humans and the environment. WEEE contains considerable quantities of valuable metals such as base metals, precious metals and rare earth elements (REE). Metal recovery from WEEE is conventionally carried out by pyrometallurgical and hydrometallurgical methods. In this PhD research, novel metal recovery technologies from WEEE are investigated. Using acidophilic and cyanide-generating bacteria, copper and gold were removed from crushed electronic waste with removal efficiencies of 98.4 and 44.0%, respectively. The leached metals in solution were recovered using sulfidic precipitation and electrowinning separation techniques. Finally, a techno-economic assessment of the technology was studied. This research addresses the knowledge gap on two metal extraction approaches, namely chemical and biological, from a secondary source of metals. The essential parameters of the selective metal recovery processes, scale-up potential, techno-economic and sustainability assessment have been studied.

Download or read book Silver Recovery From Assorted Spent Sources Toxicology Of Silver Ions written by Sabir Syed and published by World Scientific. This book was released on 2018-02-27 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silver holds three world records; it has the lowest contact resistance, highest electrical conductivity and the best thermal conductivity of all metals. The element's physical strength, brilliance and malleability leads to its many uses from electronics to optical applications. A new 'silver rush' has occurred following the recent discovery that silver, when divided to form particles at the nano scale, can take on new properties. Meanwhile, there has been an increase in regulations against environmental pollution of silver ions toxicity, which have caused numerous diseases and disorders in the marine, microbial, invertebrate and vertebrate community (including humans). Both of which have led to a great interest in silver recovery for both environmental toxicity and an economic point of view. Comprised of ten chapters, this book draws attention to the most advance technologies in silver recovery and recycling from various spent sources, which will appeal to research scientists and metallurgists. The state of the art in recovery of silver from different sources by hydrometallurgical and bio-metallurgical processing and varieties of leaching, cementing, reducing agents, adsorbents, and bio-sorbents are highlighted in this book. Contents: Introduction (Syed Sabir)Leaching of Silver Contained in Mining Tailings. A Comparative Study of Several Leaching Reagents (Eleazar Salinas-Rodríguez, Juan Hernández-Ávila, Eduardo Cerecedo-Sáenz, Alberto Arenas-Flores, Ma Isabel Reyes-Valderrama, Edmundo Roldán-Contreras and Ventura Rodríguez-Lugo)Adsorption and Recovery of Silver from Aqueous Solutions (Emanuelle Dantas de Freitas, Thiago Lopes da Silva, Meuris Gurgel Carlos da Silva and Melissa Gurgel Adeodato Vieira)The Biogenic Synthesis of Silver Nanoparticles as a Method for Recovering Silver from Secondary Sources Using Extracts from Indigenous Australian Plants (Derek Fawcett, Sridevi Brundavanam and Gérrard Eddy Jai Poinern)Electrochemical Recovery of Silver from Waste Solutions (Victor Reyes-Cruz, María Aurora Veloz Rodríguez, José Angel Cobos Murcia and Gustavo Urbano Reyes)Recovery of Silver from Industrial Wastes: Strategies and Technologies (M Chakankar, U Jadhav and H Hocheng)Silver Recovery Methods from Photographic Wastes (Nuri Nakiboğlu)Recovery of Silver from E-wastes Using Acidothiourea (Katsutoshi Inoue, Biplob Kumar Biswas, Manju Gurung, Hidetaka Kawakita, Keisuke Ohto and Shafiq Alam)Silver Extraction and Recovery with Macrocyclic and Tripodal Compounds (Keisuke Ohto, Yuki Ueda, Ramachandra Rao Sathuluri, Hidetaka Kawakita, Shitaro Morisada and Katsutoshi Inoue)Environmental Impacts of Silver from Spent Nanosources (Marija Ljubojević, Mirta Milić and Ivana Vinković Vrček) Readership: Students, researchers, chemists, metallurgists, environmental scientists and electronic waste recovery experts. Keywords: Silver;Silver Recovery;Toxicology;Inorganic Chemistry;Silver IonsReview:0

Download or read book Gold Ore Processing written by Mike D. Adams and published by Elsevier. This book was released on 2016-05-03 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Strategies of Sustainable Solid Waste Management written by Hosam M. Saleh and published by BoD – Books on Demand. This book was released on 2021-04-21 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world is currently experiencing increased environmental contamination with solid waste, which is one of the greatest environmental threats today. Although solid waste is harmful, proper management and profitable recycling can make it beneficial to the environment. In this regard, estimation of the true quantities of solid wastes generated annually in developed and developing countries is important for evaluating suitable strategies for economic and sustainable procedures of waste management. This book presents an interesting review of the economics of solid waste management in various developing and developed countries. It examines several economic applications of solid waste, such as innovative methods to generate bioelectricity from organic waste using microbial fuel cells and using solid waste as an alternative fuel in cement kilns.

Download or read book Application of Nanotechnology in Mining Processes written by Elvis Fosso-Kankeu and published by John Wiley & Sons. This book was released on 2022-03-02 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: b”Application of Nanotechnology in Mining ProcessesNanotechnology has revolutionized processes in many industries but its application in the mining industry has not been widely discussed. This unique book provides an overview of the successful implementation of nanotechnology in some of the key environmental and beneficiation mining processes. This book explores extensively the potential of nanotechnology to revolutionize the mining industry which has been relying for a very long on processes with limited efficiencies. The nine specialized chapters focus on applying nanoflotation to improve mineral processing, effective extraction of metals from leachates or pregnant solutions using nanoscale supramolecular hosts, and development of nano-adsorbents or nano-based strategies for the remediation or valorization of AMD. The application of nanotechnology in mining has so far received little attention from the industry and researchers and this groundbreaking book features critical issues so far under-reported in the literature: Application of nanotechnology in mineral processing for the enhancement of froth flotation Development of smart nanomaterials and application for the treatment of acid mine drainage Recovery of values from pregnant solutions using nanoadsorbents Valorization of AMD through formation of multipurpose nanoproducts. Audience Industrial interest will be from mining plant operators, environmental managers, water treatment plants managers, and operators. Researchers in nanotechnology, environmental science, mining, and metallurgy engineering will find the book valuable, as will government entities such as regulatory bodies officers and environmentalists.

Download or read book Recovery and Refining of Precious Metals written by C.W. Ammen and published by Springer. This book was released on 1997-07-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Gold written by Nathaniel Arbiter and published by CRC Press. This book was released on 1990 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eight articles first appeared as volume 6 (no date) of Mineral processing and extractive metallurgy review. They review new methods of recovery for gold, and to some extent, silver, focus on the particular challenges of extraction from carbonaceous ores and from various sulfide-bearing ore, and the treatment of refractory gold ore, and discuss high-temperature and biological oxidation, high- temperature chlorination, and removing metals from leach liquor. Book club price, $40. Annotation copyrighted by Book News, Inc., Portland, OR

Download or read book Chemistry of Gold Extraction written by Mineekshi Awasthi and published by . This book was released on 2015-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book U S and Allied Efforts to Recover and Restore Gold and Other Assets Stolen Or Hidden by Germany During World War II written by William Z. Slany and published by DIANE Publishing. This book was released on 1997 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Business Models for the Reuse of Secondary Resources from WEEEs written by Paolo Rosa and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book summarizes research being pursued within the FENIX project, funded by the EU community under the H2020 programme, the goal of which is to design a new product service paradigm able to promote innovative business models, to open added value to the vessels and to create new market segments. It experiments and validates its approach on three new concepts of added-value specialized vessels able to run requested services for several maritime sectors in the most effective, efficient, economic valuable and eco-friendly way. The three vessels share the same lean design methodology, IoT tools and HPC simulation strategy: a lean fact-based design model approach, which combines real operative data at sea with lean methodology, to support the development and implementation of the vessel concepts; IT customized tools to enable the acquisition, processing and usage of on board and local weather data, through an IoT platform, to provide business services to different stakeholders; HPC simulation, providing a virtual towing tank environment, for early vessel design improvement and testing. The book demonstrates that an integrated LCC analysis and LCC strategy to guarantee sustainability to vessels concepts and the proper environmental attention inside the maritime industry.

Download or read book Placer Gold Recovery Methods Special Publication 87 written by California Department of Conservation and published by . This book was released on 2016-04-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides practical, timely information on methods and equipment used in placer gold recovery. Included is detailed information on equipment, practices, recovery factors, efficiency, design, and, where available, costs. Selected gold recovery operations are described in detail. In addition, the reported efficiency and reliability of various types of equipment used today is presented. One notable method not described is the cyanide process, the recovery of gold through leaching with cyanide, a hazardous substance that must be handled with great care. The information presented herein applies to small as well as large placer mining operations. Recreational and independent miners will find information on available equipment and designs with some suggestions for improving recovery. Those intending to mine small to medium-sized placer deposits will find detailed descriptions of suitable equipment and recovery methods. Finally, those interested in byproduct gold recovery from sand and gravel operations...

Download or read book The Chemistry of Gold Extraction written by John Marsden and published by SME. This book was released on 2006 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Gold Warriors written by Peggy Seagrave and published by Verso Books. This book was released on 2020-05-05 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1945, US intelligence officers in Manila discovered that the Japanese had hidden large quantities of gold bullion and other looted treasure in the Philippines. President Truman decided to recover the gold but to keep its riches secret. These, combined with Japanese treasure recovered during the US occupation, and with recovered Nazi loot, would create a worldwide American political action fund to fight communism. This 'Black Gold' gave Washington virtually limitless, unaccountable funds, providing an asset base to reinforce the treasuries of America's allies, to bribe political and military leaders, and to manipulate elections in foreign countries for more than fifty years.

Download or read book Sustainable Resource Management written by Wenshan Guo and published by John Wiley & Sons. This book was released on 2021-04-20 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Resource Management Learn how current technologies can be used to recover and reuse waste products to reduce environmental damage and pollution In this two-volume set, Sustainable Resource Management: Technologies for Recovery and Reuse of Energy and Waste Materials delivers a compelling argument for the importance of the widespread adoption of a holistic approach to enhanced water, energy, and waste management practices. Increased population and economic growth, urbanization, and industrialization have put sustained pressure on the world’s environment, and this book demonstrates how to use organics, nutrients, and thermal heat to better manage wastewater and solid waste to deal with that reality. The book discusses basic scientific principles and recent technological advances in current strategies for resource recovery from waste products. It also presents solutions to pressing problems associated with energy production during waste management and treatment, as well as the health impacts created by improper waste disposal and pollution. Finally, the book discusses the potential and feasibility of turning waste products into resources. Readers will also enjoy: A thorough introduction and overview to resource recovery and reuse for sustainable futures An exploration of hydrothermal liquefaction of food waste, including the technology’s use as a potential resource recovery strategy A treatment of resource recovery and recycling from livestock manure, including the current state of the technology and future prospects and challenges A discussion of the removal and recovery of nutrients using low-cost adsorbents from single-component and multi-component adsorption systems Perfect for water and environmental chemists, engineers, biotechnologists, and food chemists, Sustainable Resource Management also belongs on the bookshelves of environmental officers and consultants, chemists in private industry, and graduate students taking programs in environmental engineering, ecology, or other sustainability related fields.