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Metal Metabolism in Aquatic Environments
Metal Metabolism in Aquatic Environments is a synthesis of recent developments in the field of metal ecotoxicology and features a number of contemporary issues arising from the interaction of metals and biota, such as pathways of assimilation and food chain transfer, metal accumulation and detoxification in humans and biotransformation of elements such as mercury and arsenic.
Biohydrometallurgical Processes
Extensive industrialization has led to an increased release of toxic metals into the soil and air. Industrial waste can include mine overburden, bauxite residue, and E waste, and these can serve as a source of valuable recoverable metals. There are relatively simple methods to recycle these wastes, but they require additional chemicals, are expensive, and generate secondary waste that causes environmental pollution. Biohydrometallurgical processing is a cost-effective and ecofriendly alternative where biological processes help conserve dwindling ore resources and extract metals in a nonpolluting way. Microbes can be used in metal extraction from primary ores, waste minerals, and industrial a...
The microbial ferrous wheel: iron cycling in terrestrial, freshwater, and marine environments
In the past 15 years, there has been steady growth in work relating to the microbial iron cycle. It is now well established that in anaerobic environments coupling of organic matter utilization to Fe reduction is a major pathway for anaerobic respiration. In iron-rich circumneutral environments that exist at oxic-anoxic boundaries, significant progress has been made in demonstrating that unique groups of microbes can grow either aerobically or anaerobically using Fe as a primary energy source. Likewise, in high iron acidic environments, progress has been made in the study of communities of microbes that oxidize iron, and in understanding the details of how certain of these organisms gain ene...
Geomicrobiology: Molecular and Environmental Perspective
The interaction of microorganisms with geological activities results in processes influencing development of the Earth’s geo- and biospheres. In assessing these microbial functions, scientists have explored short- and longterm geological changes attributed to microorganisms and developed new approaches to evaluate the physiology of microbes including microbial interaction with the geological environment. As the field of geomicrobiology developed, it has become highly interdisciplinary and this book provides a review of the recent developments in a cross section of topics including origin of life, microbial-mineral interactions and microbial processes functioning in marine as well as terres...
Biomining
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.
Recent Advances in Hydro- and Biohydrometallurgy
This book is a printed edition of the Special Issue Recent Advances in Hydro- and Biohydrometallurgy that was published in Minerals
EXTREMOPHILES - Volume III
Extremophiles is a component of Encyclopedia of Biological, Physiological and Health Sciences in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The extremophiles represent some of the most fascinating organisms on Earth for the simple reason that they inhabit extreme environments characterized by physical and (or) chemical properties which render them totally inhospitable for most of the other organisms. The work has been sub-divided into 6 main topics related to the above mentioned environmental conditions. These topics consist of a general introduction and of several more specialized chapters that have been written by...
Faces in the Clouds
Religion is universal human culture. No phenomenon is more widely shared or more intensely studied, yet there is no agreement on what religion is. Now, in Faces in the Clouds, anthropologist Stewart Guthrie provides a provocative definition of religion in a bold and persuasive new theory. Guthrie says religion can best be understood as systematic anthropomorphism--that is, the attribution of human characteristics to nonhuman things and events. Many writers see anthropomorphism as common or even universal in religion, but few think it is central. To Guthrie, however, it is fundamental. Religion, he writes, consists of seeing the world as humanlike. As Guthrie shows, people find a wide range o...
