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• Author : Hongbo Zhao,Congren Yang,Xian Zhang,Yisheng Zhang,Guanzhou Qiu
• Publisher :Unknown
• Release Date :2021-08-01
• Total pages :246
• ISBN : 9780128219027

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Summary : Bioleaching of chalcopyrite is always a challenge and research hotspot. The low copper extraction and dissolution kinetics restricted the industrial application of chalcopyrite bioleaching. To solve this problem, the dissolution process and passivation mechanism of chalcopyrite in bioleaching should be first studied, then the rate-limiting steps should be analysed explicitly, and finally the intensifying method can be put forward. Many scholars have made efforts to investigate the dissolution mechanism of chalcopyrite in bioleaching. However, there is no congruence of opinion as yet. Biohydrometallurgy of Chalcopyrite summarizes and discusses the reported research findings. In addition, this book publishes the related results found by the authors’ research. Then, the dissolution mechanism of chalcopyrite in bioleaching is interpreted. Finally, the process intensification techniques of chalcopyrite bioleaching are provided and discussed. Hence, this book provides useful reference and guidance in both laboratory research and industrial production. Interprets the dissolution mechanism of chalcopyrite in bioleaching Provides feasible technologies for intensifying chalcopyrite bioleaching Overviews the current situations of chalcopyrite bioleaching Helps the readers to deeply understand the bioleaching mechanisms of chalcopyrite Provides topics for future research and potential industrial applications

• Author : Giovanni Rossi
• Publisher :Unknown
• Release Date :1990
• Total pages :609
• ISBN : UOM:39015024761622

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Summary :

• Author : Salih Salih
• Publisher :Unknown
• Release Date :2015-06-03
• Total pages :224
• ISBN : 9789535121275

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Summary : The application of Fourier transform (FT) in signal processing and physical sciences has increased in the past decades. Almost all the textbooks on signal processing or physics have a section devoted to the FT theory. For this reason, this book focuses on signal processing and physical sciences. The book chapters are related to fast hybrid recursive FT based on Jacket matrix, acquisition algorithm for global navigation satellite system, determining the sensitivity of output parameters based on FFT, convergence of integrals of products based on Riemann-Lebesgue Lemma function, extending the real and complex number fields for treating the FT, nonmaterial structure, Gabor transform, and chalcopyrite bioleaching. The book provides applications oriented to signal processing and physics written primarily for engineers, mathematicians, physicians and graduate students, will also find it useful as a reference for their research activities.

• Author : K.A. Natarajan
• Publisher :Unknown
• Release Date :2018-06-13
• Total pages :502
• ISBN : 9780128040997

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Summary : 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

• Author : Anonim
• Publisher :Unknown
• Release Date :2019-07-30
• Total pages :214
• ISBN : 9783039212996

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Summary : This book is a printed edition of the Special Issue Recent Advances in Hydro- and Biohydrometallurgy that was published in Minerals

• Author : Hongbo Zhao,Congren Yang,Xian Zhang,Yisheng Zhang,Guanzhou Qiu
• Publisher :Unknown
• Release Date :2021-08-15
• Total pages :266
• ISBN : 0128218800

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Summary : Bioleaching of chalcopyrite is always a challenge and research hotspot. The low copper extraction and dissolution kinetics restricted the industrial application of chalcopyrite bioleaching. To solve this problem, the dissolution process and passivation mechanism of chalcopyrite in bioleaching should be first studied, then the rate-limiting steps should be analysed explicitly, and finally the intensifying method can be put forward. Many scholars have made efforts to investigate the dissolution mechanism of chalcopyrite in bioleaching. However, there is no congruence of opinion as yet. Biohydrometallurgy of Chalcopyrite summarizes and discusses the reported research findings. In addition, this book publishes the related results found by the authors' research. Then, the dissolution mechanism of chalcopyrite in bioleaching is interpreted. Finally, the process intensification techniques of chalcopyrite bioleaching are provided and discussed. Hence, this book provides useful reference and guidance in both laboratory research and industrial production. Interprets the dissolution mechanism of chalcopyrite in bioleaching Provides feasible technologies for intensifying chalcopyrite bioleaching Overviews the current situations of chalcopyrite bioleaching Helps the readers to deeply understand the bioleaching mechanisms of chalcopyrite Provides topics for future research and potential industrial applications

• Author : Douglas E. Rawlings
• Publisher :Unknown
• Release Date :2013-03-09
• Total pages :302
• ISBN : 9783662061114

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Summary : Biomining is the use of microorganisms in the recovery of metals from ores. During bioleaching, metals such as copper, nickel or zinc are oxidized through microbial action from the water-insoluble sulfide to the soluble sulfate forms. Although gold is inert to microbial action, microbes can also be used in gold recovery from certain types of ores because as they oxidize the ore, they open up its structure, thereby allowing a gold-solubilizing agent such as cyanide to penetrate the ore. The book describes several industrial bioleaching and biooxidation processes as well as the underlying theory and biology of the microbes involved.

• Author : Douglas E. Rawlings,D. Barrie Johnson
• Publisher :Unknown
• Release Date :2006-12-18
• Total pages :314
• ISBN : 9783540349112

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Summary : Biomining uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. This book takes a strong applied approach to the study of biomining. It describes emerging and established industrial processes, as well as the underlying theory of the process, along with the biology of the microorganisms involved. Chapters have been contributed by experts from leading biomining companies, consultants and internationally recognized researchers and academics.

• Author : Nagina Parmar,Ajay Singh
• Publisher :Unknown
• Release Date :2013-12-09
• Total pages :302
• ISBN : 9783642418372

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Summary : Over the past 4 billion years, microorganisms have contributed to shaping the earth and making it more habitable for higher forms of life. They are remarkable in their metabolic diversity and their ability to harvest energy from oxidation and reduction reactions. Research on these microbiological processes has led to the newly evolving fields of geomicrobiology and biogeochemistry, linking the geosphere and the biosphere. This volume of the Soil Biology series provides an overview of the biogeochemical processes and the microorganisms involved, with an emphasis on the industrial applications. Topics treated include aspects such as bioremediation of contaminated environments, biomining, biotechnological applications of extremophiles, subsurface petroleum microbiology, enhanced oil recovery using microbes and their products, metal extraction from soil, soil elemental cycling and plant nutrition.

• Author : Sergey Glagolev
• Publisher :Unknown
• Release Date :2019-01-01
• Total pages :488
• ISBN : 9783030229740

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Summary : This open access proceedings of the 14th International Council for Applied Mineralogy Congress (ICAM) in Belgorod, Russia cover a wide range of topics including applied mineralogy, advanced and construction materials, ore and industrial minerals, mineral exploration, cultural heritage, etc. It includes contributions to geometallurgy, industrial minerals, oil and gas reservoirs as well as stone artifacts and their preservation. The International Congress on Applied Mineralogy strengthens the relation between the research on applied mineralogy and the industry.

• Author : Edgardo R. Donati,Wolfgang Sand
• Publisher :Unknown
• Release Date :2007-05-11
• Total pages :314
• ISBN : 9781402055898

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Summary : The application of microbiological methods to the extraction of metals from minerals is supported by several bioleaching and biooxidation processes operating in different sites over the world. This book details the basic aspects of the process with special emphasis on recent contributions regarding the chemical and microbial aspects of the bioleaching process and the use of microorganisms in the treatment of complex ores and concentrates.

• Author : Alain Fuamba Tshilombo
• Publisher :Unknown
• Release Date :2004
• Total pages :360
• ISBN : OCLC:271213992

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Summary : Chalcopyrite is known to be recalcitrant to conventional hydrometallurgical and biohydrometallurgical processes. Formation of passive layers on the chalcopyrite surface results in slow and incomplete leaching. The nature of how these passive layers are formed is the subject of much controversy. The most likely explanation is the formation of polysulphide compounds or copper-rich intermediate products on the chalcopyrite surface. The formation of these products depends mainly on temperature and solution potential. Based on these observations, electrochemical techniques were used to study the behaviour of chalcopyrite under a variety of conditions similar to ferric and microbial leaching. Electrochemical techniques have the advantage over other techniques of measuring properties at the solid-liquid interface. Slow chalcopyrite leaching was mainly observed under the following conditions: (1) low temperature (25C̕) and low potential (0.45 to 0.6 V SCE); (2) high temperature (65C̕) and high potential (above 0.6 V SCE). Leaching was accelerated at high temperature (65C̕) under mildly oxidizing conditions (0.45 to 0.55 V SCE). The study also indicated that a polarized chalcopyrite surface inhibits ferric reduction and that the presence of pyrite during chalcopyrite leaching can be beneficial. The electrochemical study was validated in leaching tests carried out in a stirred-tank reactor with fine chalcopyrite particles. Leaching was retarded at low temperatures due to the presence of an induction period. The duration of the induction period decreased with increasing temperature. The addition of pyrite significantly increased both the rate and the extent of chalcopyrite leaching. Complete conversion of chalcopyrite was obtained within 16 hours at 65C̕ at a pyrite: chalcopyrite mass ratio of 2:1. An electrochemical model that takes into consideration the galvanic interaction with pyrite and the "passivation" of chalcopyrite was proposed. The addition of microorganisms to the leaching system was investigated. Chalcopyrite was leached almost to completion (95%) within 30 days in the presence of thermophilic bacteria at low potentials and high temperatures. The bioleaching rate of chalcopyrite was further increased with the addition of pyrite. Finally, atmospheric leaching of chalcopyrite was carried out at 80C̕ under a range of conditions. Complete copper extraction was attained in 4 hours at a pyrite: chalcopyrite ratio of 4:1. The present study has shown that chalcopyrite passivation can be prevented at low solution potentials, high temperatures and in the presence of moderate amounts of pyrite.

• Author : Axel Schippers,Wolfgang Sand,Franz Glombitza,Sabine Willscher
• Publisher :Unknown
• Release Date :2007-07-15
• Total pages :680
• ISBN : 9783038131564

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Summary : The main focus of this collection of peer-reviewed articles is the role that micro-organisms play in the treatment of minerals, metals, coal, oil, waste materials; and also in related environmental issues. Nowadays, as well as developing new technologies for the production of raw materials and useful products, major efforts have to be directed at the remediation of former mining sites and at environmental protection tasks associated with the various kinds of mining. Volume is indexed by Thomson Reuters CPCI-S (WoS).

• Author : Nicolas Guiliani,Cecilia Demergasso,Raquel Quatrini,Francisco Remonsellez,Carol Davis-Belmar,Gloria J. Levicán,Pilar Parada,Carlos Barahona,Rebekah Zale
• Publisher :Unknown
• Release Date :2013-10-07
• Total pages :600
• ISBN : 9783038262725

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Summary : Volume is indexed by Thomson Reuters CPCI-S (WoS). The main focus of this collection of peer-reviewed articles is biohydrometallurgy. This is the field of microbial ecology which is the key to answering central questions concerning not only the diversity and behavior of micro-organisms in commercial operations, but also possible applications in biohydrometallurgy of extremophiles coming from very different environments. The 134 papers are grouped as follows: Chapter 1: Microbial Ecology, Geomicrobiology and Bioprospecting in Natural and Mining Environments; Chapter 2: Omics, Molecular Genetics and Biochemistry of Microorganisms in Mining Processes; Chapter 3: Industrial Biohydrometallurgy: Studies, Practices and Operation; Chapter 4: Biohydrometallurgy as a Remediation Strategy.

• Author : V. S. T. Ciminelli,Oswaldo Garcia,Mônica C. Teixeira,Regina Pinto Carvalho,Patrícia F. Pimentel
• Publisher :Unknown
• Release Date :2001
• Total pages :1348
• ISBN : UOM:39015053781046

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Summary : Presenting the highlights of an international forum for scientific and engineering experts and students addressing the progress and applications of Biohydrometallurgy as it enters the new millennium.

• Author : Jujjavarapu Satya Eswari,Swasti Dhagat,Ramkrishna Sen
• Publisher :Unknown
• Release Date :2019-11-14
• Total pages :111
• ISBN : 9789813299191

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Summary : Thermophiles and hyperthermophiles exhibit great biotechnological potential, as they can be utilized in processes which require higher temperatures. This book comprehensively deals with all the aspects of thermophiles, starting from the source of these organisms to their latest applications. In addition it presents a compilation of all compounds produced by various thermophilic microorganisms. Due to their application in everyday life, the demands of enzymes that can work at higher temperature have been increasing. In order to keep pace with the increasing demand the industries have to search novel thermophiles producing their product of interest. Hence, this book will be of value for industries working on various biochemical products produced by these thermophiles as well as for scientists and research scholars working on microbiology and products derived from microorganisms.

• Author : Charles N. Alpers,John L. Jambor,D. Nordstrom
• Publisher :Unknown
• Release Date :2018-12-17
• Total pages :620
• ISBN : 9781501508660

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Summary : Volume 40 of Reviews in Mineralogy and Geochemistry compiles and synthesizes current information on sulfate minerals from a variety of perspectives, including crystallography, geochemical properties, geological environments of formation, thermodynamic stability relations, kinetics of formation and dissolution, and environmental aspects. The first two chapters cover crystallography (Chapter 1) and spectroscopy (Chapter 2). Environments with alkali and alkaline earth sulfates are described in the next three chapters, on evaporites (Chapter 3), barite-celestine deposits (Chapter 4), and the kinetics of precipitation and dissolution of gypsum, barite, and celestine (Chapter 5). Acidic environments are the theme for the next four chapters, which cover soluble metal salts from sulfide oxidation (Chapter 6), iron and aluminum hydroxysulfates (Chapter 7), jarosites in hydrometallugy (Chapter 8), and alunite-jarosite crystallography, thermodynamics, and geochronology (Chapter 9). The next two chapters discuss thermodynamic modeling of sulfate systems from the perspectives of predicting sulfate-mineral solubilities in waters covering a wide range in composition and concentration (Chapter 10) and predicting interactions between sulfate solid solutions and aqueous solutions (Chapter 11). The concluding chapter on stable-isotope systematics (Chapter 12) discusses the utility of sulfate minerals in understanding the geological and geochemical processes in both high- and low-temperature environments, and in unraveling the past evolution of natural systems through paleoclimate studies. The review chapters in this volume were the basis for a short course on sulfate minerals sponsored by the Mineralogical Society of America (MSA) November 11-12, 2000 in Tahoe City, California, prior to the Annual Meeting of MSA, the Geological Society of America, and other associated societies in nearby Reno, Nevada. The conveners of the course (and editors of this volume of Reviews in Mineralogy and Geochemistry), Alpers, John Jambor, and Kirk Nordstrom, also organized related topical sessions at the GSA meeting on sulfate minerals in both hydrothermal and low-temperature environments.

• Author : Edgardo R. Donati,M. Viera,Eduardo L. Tavani,Maria Alejandra Giaveno,Teresa L. Lavalle,Patricia A. Chiacchiarini
• Publisher :Unknown
• Release Date :2009-05-19
• Total pages :782
• ISBN : 9783038133018

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Summary : Volume is indexed by Thomson Reuters CPCI-S (WoS). The main focus of this collection of peer-reviewed articles is three different aspects of biohydrometallurgy: this is the field of microbial ecology which is the key to answering central questions concerning not only the diversity and behavior of micro-organisms in commercial operations, but also possible applications in biohydrometallurgy of extremophiles coming from very different environments. This covers metal recovery bioprocesses, including basic and applied studies of bioleaching and bio-oxidation; but also bioflotation. A large part of the book is given over to interfacial studies which contribute to the understanding of the interaction between surfaces and micro-organisms during those processes. Also covered are the remediation of mining activities and environmental protection as related to mining and mining industries.

• Author : Axel Schippers,Franz Glombitza,Wolfgang Sand
• Publisher :Unknown
• Release Date :2014-08-25
• Total pages :241
• ISBN : 9783642547102

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Summary : This book review series presents current trends in modern biotechnology. The aim is to cover all aspects of this interdisciplinary technology where knowledge, methods and expertise are required from chemistry, biochemistry, microbiology, genetics, chemical engineering and computer science. Volumes are organized topically and provide a comprehensive discussion of developments in the respective field over the past 3-5 years. The series also discusses new discoveries and applications. Special volumes are dedicated to selected topics which focus on new biotechnological products and new processes for their synthesis and purification. In general, special volumes are edited by well-known guest editors. The series editor and publisher will however always be pleased to receive suggestions and supplementary information. Manuscripts are accepted in English.

• Author : Sehliselo Ndlovu,Geoffrey S. Simate,Elias Matinde
• Publisher :Unknown
• Release Date :2017-06-27
• Total pages :512
• ISBN : 9781498767309

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Summary : Increasingly stringent environmental regulations and industry adoption of waste minimization guidelines have thus, stimulated the need for the development of recycling and reuse options for metal related waste. This book, therefore, gives an overview of the waste generation, recycle and reuse along the mining, beneficiation, extraction, manufacturing and post-consumer value chain. This book reviews current status and future trends in the recycling and reuse of mineral and metal waste and also details the policy and legislation regarding the waste management, health and environmental impacts in the mining, beneficiation, metal extraction and manufacturing processes. This book is a useful reference for engineers and researchers in industry, policymakers and legislators in governance, and academics on the current status and future trends in the recycling and reuse of mineral and metal waste. Some of the key features of the book are as follows: Holistic approach to waste generation, recycling and reuse along the minerals and metals extraction. Detailed overview of metallurgical waste generation. Practical examples with complete flow sheets, techniques and interventions on waste management. Integrates the technical issues related to efficient resources utilization with the policy and regulatory framework. Novel approach to addressing future commodity shortages.

• Author : Paul R. Norris,Don P. Kelly
• Publisher :Unknown
• Release Date :1988
• Total pages :578
• ISBN : UOM:39015012013820

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Summary :