The use of microorganisms to recover metals of value, such as gold, silver, and copper, from sulfide minerals explanation of biomining. Biomining is done in two steps often called bioleaching and biooxidation. Pdf biomining, the biotechnology that uses microorganisms to extract metals from ores and concentrates, is currently used exclusively for. Microbialderived natural products provide the foundation for most of the chemotherapeutic arsenal available to contemporary medicine. Universal reserves of highgrade ores are diminishing at an alarming rate due to the rapid increase in the demand for metals. Biomining for insitu resource utilization darin ragozzine harvard university 030504 nasa institute for advanced concepts student visions of the futu slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Although it is a new technique used by the mining industry to extract minerals such as copper, uranium and gold from their ores but nowadays biomining occupies an increasingly important place among the available mining technologies. This book follows a previous text entitled biomining. 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.
Recovery of critical and other raw materials from mining. Biomining is applied bioleaching and biooxidation with the aim of extracting metals from ore in contrast to acid mine drainage which is uncontrolled and unintentional questions. Heterotrophic leaching is a solution for wastes and ores of high ph 5. Pdf biomininga useful approach toward metal extraction. Factors affecting biomining crystal lattice energy surface area high temperature acid concentrations high. Biomining presentation free download as powerpoint presentation. Even though its a new technique used by the mining enterprise to extract minerals equivalent to copper, uranium, and gold from their ores, however. It method is cheap, reliable, efficient and also environmentally friendly method of mineral recovery. Biomining is the extraction of specific metals from their ores through biological means, usually microorganism. The first recognized biomining operation was set up within 20 years of the discovery of the first species of bacterium that was demonstrated to catalyze the dissolution of pyrite and other base metalcontaining sulfide minerals in acidic liquors 12. There are two techniques that are used to perform biomining known as bioleaching and bioxidization.
Biomining is a generic term used to describe the utilisation of microorganisms to process metalcontaining ores and concentrates by bioleaching. No presentation of newmonts experience with biopro wholeore heap biooxidation. If so, share your ppt presentation slides online with. Biomining is the extraction of specific metals from their ores through biological means usually bacteria. German federal institute for geosciences and natural resources bgr. Biomining article about biomining by the free dictionary. Thus biomining has emerge as an important branch of biotechnology in recent years.
Improve isolates by conventional mutation and selection or by genetic engineering. Consequently, due to environmental restrictions, these methods are being replaced in many countries by less contaminating processes. Biomining mineral bioleaching, mineral biooxidation. Biomining, the use of microorganisms to recover precious and base metals from mineral ores and concentrates, has developed into a successful and expanding area of biotechnology. Biomining will become more important as highgrade surface mineral deposits are worked out and become less viable, and mining companies. New resources for metals must be developed with the aid of novel technologies. Biomining sets of chemical elements chemical substances.
Biosorption, bioleaching, biohydrometallurgy, critical metals, weee, secondary sources. Ppt biomining powerpoint presentation free to view. Using biotechnology efficiency of biomining can be increased by using genetically modified microorganisms. Bioleaching is the extraction of metals from ores using.
These chemicals are capable of oxidizing a variety of minerals containing insoluble metal sulfides such as fe 2 s, cus, nis, and zns into their soluble sulfate forms e. Having developed from a very simple operational in terms of both engineering and biology process, biomining has developed into a multifaceted technology, to the. Bio mining can be defined as the extraction of minerals from ores by using microorganisms. Bacteriology micr2 molecular dna technology rdna202 advanced bacteriology micr311 microbial processing micr304. These two points were considered as benchmark while awarding the tender. Biomining theory, microbes and industrial processes. It was discovered in the mid 1900s that microorganisms use metals in the cell. Biomining techniques may also be used to clean up sites that have been polluted with metals.
Biomining processesincluding bioleaching and biooxidation processes facilitate the degradation of minerals, accompanied by a release of. Biomining the second technique how does biomining work. In recent years, there has been an upsurge in uranium exploration across the globe, driven by a renewed interest in nuclear energy and higher uranium prices. Biomining is the use of autotrophic, acidophilic, iron, and sulfuroxidizing microorganisms to produce ferric iron and sulfuric acid. 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 waterinsoluble sulfide to the soluble sulfate forms. Ppt biomining and bioleaching powerpoint presentation. These organisms secrete different organic compounds that chelate metals from the environment and bring it back to the cell where they are typically used to coordinate electrons.
What advantages does biomining have over other metal extraction methods. Biomining a useful approach toward metal extraction. Microbial leaching is the process by which metals are dissolved from ore bearing rocks using microorganisms. In bioleaching, the minerals are dumped into what can be referred to as a leach pile. For the last 10 centuries, microorganisms have assisted in the recovery of copper dissolved in drainage from water. What does microbiology have to do with metal extraction or mine wastes. In microbial leaching or bioleaching metals can be extracted from large quantities of low grade ores this process has been used for centuries to recover copper form the drainage water of mines the role of microbes in the bioleaching came into notice some 40 years ago. Having developed from a very simple operational process, biomining has developed into a multifaceted technology, to the extent that many of the largest industrial stirred tanks and heaps throughout the world are employed for biomining minerals. Biomining and bioleaching free download as powerpoint presentation. Having developed from a very simple operational in terms of both engineering and biology process, biomining has developed into a multifaceted technology, to the extent that many of the largest industrial stirred tanks and. Bioleaching commonly refers to biomining technology applied to base metals. Sustainable landfill engineered landfill controlled dump. Although it is a new technique used by the mining industry to extract minerals such as copper, uranium and gold from their ores but now a days. Pdf proses pengolahan dan pemurnian bijih tembaga dengan.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Biomining processesincluding bioleaching and biooxidation processesfacilitate the degradation of minerals, accompanied by a release of. Biomining is a technique of extracting metals from ores and other solid materials typically using prokaryotes or fungi. Biomining is the process of using microorganisms microbes to extract metals of economic interest from rock ores or mine waste. Biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. Biomining is the technical extraction of metals from ores, mineral concentrates and waste materials by microbial activity. Bioleaching microbial leaching, being an economical and environmental friendly process, is investigated extensively for metal extraction from secondary. Biomining environment friendly mining biotech articles. In south africa, uranium was produced as a byproduct of gold production in the witwatersrand basin, but after the collapse of the uranium market in the 1980s, the. Indonesia has ore reserves of copper cu which is very large, most of the reserves with porphyry cu content in the ore vary between 0. Microbial leaching bioleaching, biomining microbial leaching is the process by which metals are dissolved from ore bearing rocks using microorganisms. Zigma then assessed the time required to clear the entire dump yard. In addition to cu, usually ore associated with other metals such as gold a, silver ag and rare metals. The role of microorganisms mining technology technology.
Biomining biotechnologies for extracting and recovering. Sayler knoxville,tn 379961605, usa 1 introduction 443 2. Biomining is a technique used to recover the various types of minerals from ore using microorganism. Bioleaching application of biotechnology in mining industry. Biomining and bioleaching a free powerpoint ppt presentation displayed as a flash slide show on id. Data mining for biomedical problemsnational research, development and innovation o. Guidelines for disposal of legacy waste old municipal. In reality, the same biological process had been unknowingly used to extract metals at mine sites in, for example, spain, the uk and. Bioleaching microbes such as bacteria and fungi convert metal compounds into their watersoluble forms and are biocatalysts of these leaching processes. Biomining and bioleaching is the property of its rightful owner. One possibility would be to introduce arsenic resistance into some bioleaching organisms, which could then be used in gold bioleaching. Biomining and bioleaching materials chemical substances scribd. On the other hand, the microbial solubilization of metals by bioleaching or biomining is successfully used in industrial operations, to extract several metals such as copper, gold and uranium.
We are happy to announce that this web page has been selected as a featured site in studyweb as one of the best educational resources on the web. Zigma conducted a contour mapping survey before the presentation to assess the quantity of waste dumped. Biomining presentation chemistry natural materials. Biomining is a combination of chemical and biological reactions. Biomining presentation chemistry natural materials scribd.