Download or read book Extraction of Gold III Using Modified Activated Carbon written by and published by . This book was released on 2009 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The activated carbons were modified with various potentially gold binding reagents by impregnation technique and their extraction efficiencies toward gold were evaluated. Tetrabutyl ammonium iodide (TBA) was found to be the most effective adsorbent for gold in terms of both extraction efficiency and speed. Various parameters were optimized around the preparation and utilization of this modified carbon in both batch and column methods. Several interfering ions commonly found in gold waste samples were found to have absolutely no effects to the extraction of gold. The adsorption isotherm was studied but no definite relation to any model was established. The breakthrough curve was used to demonstrate the improvement in gold extraction of the TBA-impregnated carbon over a commercial activated carbon and determine the adsorption capacity. The breakthrough capacity of the TBA-carbon and the commercial carbon were 90.62 and 18.00 mg/g respectively. The TBA-carbon was successfully applied to the recovery of gold from a real industrial waste sample.

Download or read book A Process for the Recovery of Gold from Activated Carbon by Leaching and Electrolysis written by J. B. Zadra and published by . This book was released on 1950 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Processing Gold Ores Using Heap Leach carbon Adsorption Methods written by Harold J. Heinen and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Carbon in pulp Technology for the Extraction of Gold written by and published by . This book was released on 1982 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 The Extractive Metallurgy of Gold written by John C. Yannopoulos and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Activated Carbon Adsorption written by Roop Chand Bansal and published by CRC Press. This book was released on 2005-05-24 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: High surface area, a microporous structure, and a high degree of surface reactivity make activated carbons versatile adsorbents, particularly effective in the adsorption of organic and inorganic pollutants from aqueous solutions. Activated Carbon Adsorption introduces the parameters and mechanisms involved in the activated carbon adsorption

Download or read book Selective Adsorption of Gold from PCB Wastewater by Thiourea modified Activated Carbon Sphere written by 鄧逸萱 and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Process for Recovering Gold and Silver from Activated Carbon by Leaching and Electrolysis written by J. B. Zadra and published by . This book was released on 1952 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gold Metallurgy and the Environment written by Sadia Ilyas and published by CRC Press. This book was released on 2018-02-19 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of all the gold extraction processes along with their mechanistic study and environmental impact. Reviews extraction techniques previously employed as well as recently evolved technology for gold leaching, provides technical flow sheets for processing of ores with a diversity of lixiviants and offers a compulsory overview of every gold processing technique It also discusses recent integrated techniques including hydro- and bio-metallurgical techniques with examples

Download or read book Platinum Metals in the Environment written by Fathi Zereini and published by Springer. This book was released on 2014-11-06 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume presents new data and insights from the most internationally respected PGE experts, representing a variety of disciplines ranging from chemistry, geochemistry, biology, environmental science to toxicology and environmental health. It builds upon three previous co-edited books published by Springer, Zereini and Alt (Eds.) (1999, 2000 and 2006), incorporating the most recent advances on the topic. The book covers the following topical areas related to PGE: sources and applications, analytical methods, environmental fate, bioavailability and chemical behaviour, use of bioindicators and human exposures and health risk potential. Highly interdisciplinary in orientation, this book is a comprehensive guide to academics, students and professionals working in a number of different scientific fields, who are interested in topics related to platinum metal emissions in the environment.

Download or read book Extraction of Precious Metals on Activated Carbon written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallurgical interest in activated carbon as an extractant for precious metals is related principally to its use in gold recovery processes, and therefore this review focuses largely on the extraction of gold. Since activated carbon is also an efficient scavenger of certain silver metal complexes, some attention is also given to silver.

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 Fundamentals and Applications of Anion Separations written by Bruce A. Moyer and published by Springer Science & Business Media. This book was released on 2011-06-27 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book documents the proceedings of the symposium "Fundamentals and Applications of Anion Separations" held during American Chemical Society National Meeting in Chicago, Illinois, August 25-30, 200I. Nearly 40 papers devoted to discussions on anion separation related to fundamental research and applications were presented. The symposium, sponsored by Osram Sylvania, BetzDearbom, and the Separation Science & Technology Subdivision of the Industrial & Engineering Chemistry Division of the American Chemical Society was organized by Bruce A. Moyer, Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Building. 4500S, Oak Ridge, TN 37831-6119, and Raj P. Singh, Chemicals and Powders R&D, Osram Sylvania, Chemical and Metallurgical Products Division, Towanda, PA 18848. It drew presenters from Australia, the Czech Republic, France, Germany, Japan, South Africa, Thailand, the United Kingdom, and the United States. Separations constitute an integral part of chemical industry. Chemical products typically originate in resources that must be concentrated and purified, chemically transformed, and subjected to fmal purification. Effluent streams from the processes must be treated to recycle reusable components and to remove environmentally harmful species. Some industrial processes are devoted to environmental cleanup after pollution has occurred. In addition, many analytical methods require a separation for preconcentration, or a separation may be an inherent part of the analysis itself. Micro separations occurring at membranes or interfaces are also related phenomena employed for ion sensing. Many species targeted for separation are naturally anionic. Although the standard separations techniques ofextraction, ion exchange, adsorption, precipitation, etc.

Download or read book Rare Earth Metal Recovery for Green Technologies written by Rajesh Kumar Jyothi and published by Springer Nature. This book was released on 2020-03-25 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the development, use, extraction, and recovery of rare earth metals. Rare earth elements (REEs) occupy a key role in daily life in industrial applications. They are one of the critical elements for energy and sustainable growth. REEs are utilized in many modern electrical and electronic devices such as smart phones, computers, LED lights etc. Recovery of the REEs from secondary resources represents a way to meet the growing demand for electronic devices. Because of their rarity, utility, and importance, the recovery, utilization and recycling of rare earth metals is of utmost importance. This book presents both current methods of processing rare earths from primary and secondary sources and new, green routes for their isolation and purification. The book also addresses their utilization, re-use, reduction, and recycling policies that exist globally. Applications in metallurgy, magnets, ceramics, electronics, and chemical, optical, and nuclear technologies are discussed.

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 1050 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