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. Oct 05, 2006 biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. The formation of organic or inorganic acids protons. Guilianiahl communication is a widespread phenomenon in biomining bacteria and seems to be involved in mineraladhesion. In relation to bacterial leaching and biomining, microorganisms are using and releasing minerals in the earths crust since ancient times. Bioleaching and phytomining extraction of copper by. Biomining is the use of microorganisms in the recovery of metals from ores.
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. For the last 10 centuries, microorganisms have assisted in the recovery of copper dissolved in drainage from water. Feasibility step ii and basic engineering complementary testwork on bioleaching, zinc solvent extraction and electrowinning. Metal ores are a finite resource which are in limited supply. Bioleaching is the process by which metals are dissolved from ore bearing rocks using microorganisms.
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. Mining operations have long benefited from the activities of such naturally occurring microorganisms, especially the ability of some bacteria to leach the metals from insoluble ores. Bioleaching, or microbial ore leaching, is a process used to extract metals from their ores using bacterial microorganisms. Biomining is the extraction of specific metals from their ores through biological means usually bacteria. The bacteria feed on nutrients in the minerals, causing the. Some microbes can oxidize those metals, allowing them to dissolve in. The researchers have found bioleaching microbes in mine sites and acid sulphate soils in the west australian wheatbelt. 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. Phytoming and bioleaching extraction of copper from ores bioleaching advantages we can use waste ores, reducing the impact of mining on the environment. Biomining is also known as microbial leaching or as biooxidation. Download as pptx, pdf, txt or read online from scribd. While careful considerations are made in the design and engineering of biomining operations, microbiological aspects have been subjected to far less scrutiny and control.
Universal reserves of highgrade ores are diminishing at an alarming rate due to the rapid increase in the demand for metals. Biomining article about biomining by the free dictionary. Ppt biomining and bioleaching leon nyamweda academia. Microbial leaching bioleaching, biomining environmental. Ppt biomining powerpoint presentation free to view id. Biomining is done in two steps known as bioleaching and biooxidation. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Oct 19, 20 cards for pupils to create a flowchart on how pure copper is obtained from lowgrades ores via bioleaching and phytomining. Status of the bioleaching technologies and directions taken by. She holds an industrial research chair in biomining, bioremediation and science communication at laurentian university. These salttolerant microorganisms have been used to develop bioleaching cultures that could be used for biomining operations where fresh water is. Biomining entails the use of acidophilic microbes to facilitate the recovery process of metals from sulfide minerals in the processes of bioleaching and biooxidation. Biomining method is cheap, reliable, efficient and also environment friendly method of mineral recovery.
Although a number of unresolved challenges in conventional biomining remain, such as bioleaching chalcopyrite and using brackish and saline water for bioprocessing minerals, recent innovations, such as the reductive bioprocessing of oxidized metal deposits, suggest that new opportunities for developing biotechnologies in the mining and. A new laurentian university industrial research chair position in biomining, bioremediation and science communication has the potential to kickstart a new industry in sudbury that could create hundreds or even thousands of jobs, said the director of the vale living with lakes centre. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Oct 15, 2016 universal reserves of highgrade ores are diminishing at an alarming rate due to the rapid increase in the demand for metals. Ppt bioleaching powerpoint presentation, free download. Biomining and bioleaching free download as powerpoint presentation. Bioleachingbiocorrosion metalsbiomining powerpoint ppt presentation. Bioleaching kinetics the rate of bacterial oxidation is higher than that of chemical oxidation. The biological oxidation of sulphide minerals is the fundamental mechanism for bioleaching and biooxidation.
Review of biohydrometallurgical metals extraction from. Biomining and bioleaching a free powerpoint ppt presentation displayed as a flash slide show on id. The biologically produced leaching reagents attack the minerals and leach the metals in abiotic reactions. An industrial bioleaching plant for the treatment of a refractory gold concentrate. The future of bioleaching isolate new bacterial strains from extreme environments, such as minedrainage sites, hot springs, and waste sites, and use these to seed bioleaching processes. 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.
Stirred tank biomining bioheaps in situ biomining types of biomining 10. Biomining and bioremediation are one step closer to wider use in the mining industry with the creation of a new position at laurentian university geared towards commercializing the technologies. Biomining is a technique of extracting metals from ores and other solid materials typically using prokaryotes or fungi. German federal institute for geosciences and natural resources bgr biomining industrial applications 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. Pdf biomininga useful approach toward metal extraction. Energy efficient, using almost half as much energy as traditional extraction. Here is a small powerpoint presentation on bioleaching a phytomining. Improve isolates by conventional mutation and selection or by genetic engineering. Biotechnology for metal bearing materials in europe. Bioleaching involves bacteria which feed on the low grade ore and absorb the copper ions. Bioleaching and phytomining extraction of copper by katie. Introduction bioleaching is the simple and effective technology for metal extraction from low grade ores and mineral concentrate by the use of micro organisms.
Microbial leaching bioleaching, biomining microbial leaching is the process by which metals are dissolved from ore bearing rocks using microorganisms. The second technique what are the benefits, and drawbacks of biomining. Biomining environment friendly mining biotech articles. Future extraction methods bioleaching and phytomining. Created using powtoon free sign up at youtube create animated videos and animated presentations for free. It finds application in the extraction of metals from their ores. Nextgen solutions for biomining host expertise our genetic toolkit and host expertise on various mesophiles and thermophiles allows us to experiment with different mineral sulfides, targeting large markets and biomining applications. Biomining is done in two steps often called bioleaching and biooxidation. Using biotechnology efficiency of biomining can be increased by using genetically modified microorganisms. Mykytczuk is a microbiologist who studies how bacteria live and adapt to extreme environments. Biomining biotechnological systems bioleaching and biosorption for the extraction and recovery of metals from secondary sources. Scrap iron can be used to displace the copper from the leachate.
Oct 02, 2015 here is a small powerpoint presentation on bioleaching a phytomining. Biomining presentation free download as powerpoint presentation. 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. This website and its content is subject to our terms and conditions. Today the recovery of copper from sulfide ores is the most important industrial application, and a significant proportion of the world copper production originates from heap or dump. These chemicals are capable of oxidizing a variety of minerals. Bioleaching is a process that employs microorganisms to dissolve leach sulphide minerals. Biooxidation is the enrichment of metals, particularly gold, by mobilization and thus removal of interfering metal sulfides from ores bearing the precious metals rohwerder et al. Biomining a useful approach toward metal extraction. Bioleaching application of biotechnology in mining industry.
Brittany molkenthin works cited pros a requires low input of labor b considerably green, low gas emission c low use of energy d lower costs to operate e cleaner process cons a limited to only a small. Biomining presentation chemistry natural materials. Biomining is an increasingly applied biotechnological procedure for processing of ores in the mining industry biohydrometallurgy. Cards for pupils to create a flowchart on how pure copper is obtained from lowgrades ores via bioleaching and phytomining. Jan 09, 2012 in relation to bacterial leaching and biomining, microorganisms are using and releasing minerals in the earths crust since ancient times. Biomining is the process of using microorganisms microbes to extract metals of economic interest from rock ores or mine waste. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. 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. The environmental consequences of mining and quarrying are vast, as highlighted in the mining section. Bioleachingbiocorrosion metalsbiomining ppt video online.
During bioleaching, metals such as copper, nickel or zinc are oxidized through microbial action from the waterinsoluble sulfide to the soluble sulfate forms. Biomining is the use of autotrophic, acidophilic, iron, and sulfuroxidizing microorganisms to produce ferric iron and sulfuric acid. Biomining mineral bioleaching, mineral biooxidation. 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. Valuable metals are commonly bound up in solid minerals. In industrial bioleaching biomining three technical processes are differentiated.
Biomining is the extraction of specific metals from their ores through biological means, usually microorganism. Find powerpoint presentations and slides using the power of, find free presentations research about copper bioleaching ppt. Dec 18, 2006 biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. 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 heaps throughout the world are. Bioleaching microbes harvest energy for their metabolism by catalyzing the production and recycling of some leaching reagents. Im yang guo, an exchange student from shanghai normal university. Ppt biomining and bioleaching powerpoint presentation. Nowadays the production of copper from lowgrade ores is the most important industrial application and a significant part of world copper production already originates from heap or dumpstockpile bioleaching. Conversion of an insoluble valuable metal metal sulfide into a soluble form metal sulfate using.
Bioleachingbiocorrosion metalsbiomining presentation transcript. Ppt biomining powerpoint presentation free to view. Files included 1 copper bioleaching and phytomining. Biomining and bioleaching materials chemical substances scribd. Engineering microbial consortia to enhance biomining and. It was discovered in the mid 1900s that microorganisms use metals in the cell. The important role that these microorganisms have in biomining depends on all of these physiological characteristics.
Ppt bioleachingbiocorrosion metalsbiomining powerpoint. Oct 10, 2017 created using powtoon free sign up at youtube create animated videos and animated presentations for free. Biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. Introduction future sustainable development requires measures to reduce the dependence on nonrenewable raw materials and the demand for primary resources. Biomining and bioleaching powerpoint ppt presentation free to view. Biomining biotechnologies for extracting and recovering. Presentation on mechanisms and applications of chalcopyrite and pyrite bioleaching in biohydrometallurgy a presentation. Biomining biotechnological systems bioleaching and. Pdf files, and powerpoint files could be flashconverted for smaller file size and for an add. Mesophiles moderately thermophilic bacteria extremophiles.
Bioleaching for copper extraction of marginal ores from the. Biomining and bioleaching biomining and bioleaching. In the first case, the metal of interest is bound to the sulphide compound that is biologically oxidized. Heap or dump bioleaching, tank bioleaching, in situ or in place bioleaching. Biomining techniques may also be used to clean up sites that have been polluted with metals. Mykytczuk spends most of her time investigating how bacteria can be used in the mining process. Mining operations have long benefited from the activities of such naturally occurring microorganisms.
New resources for metals must be developed with the aid of novel technologies. Due to an increase in consumerism, heightened dependence on technology, and an overall world population growth, more and more minerals and metals need to be extracted from the earths surface as shown in figure 1. Description of the process and presentation of pilot plant results. Presentation on mechanisms and applications of chalcopyrite. Pictures of each step in the process, a description to link to and differentiated questions. View and download powerpoint presentations on copper bioleaching ppt. Phytomining and bioleaching gcse triple award revision. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects.
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