Pdf proses pengolahan dan pemurnian bijih tembaga dengan. 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. Biomining and bioleaching is the property of its rightful owner. Biomining presentation chemistry natural materials scribd.
These two points were considered as benchmark while awarding the tender. In addition to cu, usually ore associated with other metals such as gold a, silver ag and rare metals. 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. While careful considerations are made in the design and engineering of biomining operations, microbiological aspects have been subjected to far less scrutiny and control. Factors affecting biomining crystal lattice energy surface area high temperature acid concentrations high. Biosorption, bioleaching, biohydrometallurgy, critical metals, weee, secondary sources. The use of microorganisms to recover metals of value, such as gold, silver, and copper, from sulfide minerals explanation of biomining. Bacteriology micr2 molecular dna technology rdna202 advanced bacteriology micr311 microbial processing micr304. Biomining mineral bioleaching, mineral biooxidation.
Biomining is the use of microorganisms in the recovery of metals from ores. 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. Stirred tank biomining leaching from substrates with high mineral concentration types of biomining expensive time consuming copper and refractory gold ores thiobacillus is commonly used 11. Biomining is a combination of chemical and biological reactions. Universal reserves of highgrade ores are diminishing at an alarming rate due to the rapid increase in the demand for metals. Biomining processesincluding bioleaching and biooxidation processes facilitate the degradation of minerals, accompanied by a release of. Biomining is a generic term used to describe the utilisation of microorganisms to process metalcontaining ores and concentrates by bioleaching. 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. Bio mining can be defined as the extraction of minerals from ores by using microorganisms. Ppt biomining and bioleaching powerpoint presentation. Using biotechnology efficiency of biomining can be increased by using genetically modified microorganisms. 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. If so, share your ppt presentation slides online with. Sayler knoxville,tn 379961605, usa 1 introduction 443 2.
Pdf biomininga useful approach toward metal extraction. For the last 10 centuries, microorganisms have assisted in the recovery of copper dissolved in drainage from water. Heterotrophic leaching is a solution for wastes and ores of high ph 5. Bioleaching microbes such as bacteria and fungi convert metal compounds into their watersoluble forms and are biocatalysts of these leaching processes. Biomining environment friendly mining biotech articles. Sustainable landfill engineered landfill controlled dump. It was discovered in the mid 1900s that microorganisms use metals in the cell. Consequently, due to environmental restrictions, these methods are being replaced in many countries by less contaminating processes. Ppt biomining powerpoint presentation free to view. During bioleaching, metals such as copper, nickel or zinc are oxidized through microbial action from the waterinsoluble sulfide to the soluble sulfate forms. 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, biomining occupies an increasingly important place among the available. Biomining will become more important as highgrade surface mineral deposits are worked out and become less viable, and mining companies.
Bioleaching is the extraction of metals from ores using. Biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. Pdf biomining, the biotechnology that uses microorganisms to extract metals from ores and concentrates, is currently used exclusively for. Biomining and bioleaching free download as powerpoint presentation. There are two techniques that are used to perform biomining known as bioleaching and bioxidization. Zigma then assessed the time required to clear the entire dump yard. 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. 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 biotechnologies for extracting and recovering. New resources for metals must be developed with the aid of novel technologies. Biomining is the technical extraction of metals from ores, mineral concentrates and waste materials by microbial activity. The role of microorganisms mining technology technology.
Biomining is the use of autotrophic, acidophilic, iron, and sulfuroxidizing microorganisms to produce ferric iron and sulfuric acid. Zigma was also called for a presentation on biomining. Microbial leaching is the process by which metals are dissolved from ore bearing rocks using microorganisms. 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.
Biomining is the extraction of specific metals from their ores through biological means usually bacteria. Biomining and bioleaching a free powerpoint ppt presentation displayed as a flash slide show on id. 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 sets of chemical elements chemical substances.
Microbialderived natural products provide the foundation for most of the chemotherapeutic arsenal available to contemporary medicine. German federal institute for geosciences and natural resources bgr. Biomining is a technique used to recover the various types of minerals from ore using microorganism. Zigma conducted a contour mapping survey before the presentation to assess the quantity of waste dumped. 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. Recovery of critical and other raw materials from mining. Thus biomining has emerge as an important branch of biotechnology in recent years. Having developed from a very simple operational in terms of both engineering and biology process, biomining has developed into a multifaceted technology, to the. 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. Biomining article about biomining by the free dictionary. What does microbiology have to do with metal extraction or mine wastes. One possibility would be to introduce arsenic resistance into some bioleaching organisms, which could then be used in gold bioleaching.
Data mining for biomedical problemsnational research, development and innovation o. 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. Biomining is a technique of extracting metals from ores and other solid materials typically using prokaryotes or fungi. 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. It method is cheap, reliable, efficient and also environmentally friendly method of mineral recovery. Improve isolates by conventional mutation and selection or by genetic engineering. Even though its a new technique used by the mining enterprise to extract minerals equivalent to copper, uranium, and gold from their ores, however. Biomining the second technique how does biomining work. No presentation of newmonts experience with biopro wholeore heap biooxidation.
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. Bioleaching application of biotechnology in mining industry. Biomining and bioleaching materials chemical substances scribd. Bioleaching microbial leaching, being an economical and environmental friendly process, is investigated extensively for metal extraction from secondary. This book follows a previous text entitled biomining. 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. Guidelines for disposal of legacy waste old municipal. 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. Biomining a useful approach toward metal extraction. Biomining theory, microbes and industrial processes. Biomining presentation free download as powerpoint presentation. Microbial leaching bioleaching, biomining microbial leaching is the process by which metals are dissolved from ore bearing rocks using microorganisms. Bioleaching commonly refers to biomining technology applied to base metals. Stirred tank biomining bioheaps in situ biomining types of biomining 10.
In bioleaching, the minerals are dumped into what can be referred to as a leach pile. 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. Biomining presentation chemistry natural materials. Biomining processesincluding bioleaching and biooxidation processesfacilitate the degradation of minerals, accompanied by a release of. Biomining techniques may also be used to clean up sites that have been polluted with metals.
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