If this is the first time youre installing office you may have some setup steps to do first. Biomining and bioleaching is the property of its rightful owner. Bacterial cells can effect this metal sulfide dissolution via ironii ion and sulfur compound oxidation. This is much cleaner than the traditional heap leaching using cyanide. In recent years, a new discipline of mineral science namely biohydrometallurgy. 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. Select the videoaudio format you want to download, then click download button. The bacteria feed on nutrients in the minerals, causing the. Energy efficient, using almost half as much energy as traditional extraction. Future extraction methods bioleaching and phytomining. I last time made a video on how to get powerpoint 2016 for free. However, if youre reinstalling office, youve already redeemed a product key, or youre installing office at work or school and know you have a license, then go to the section sign in and install office on your pc or mac.
Biomining is done in two steps often called bioleaching. 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. Create simple slideshows or complex multimedia displays for. Soil microorganisms are very closely involved as catalytic agents in many geological processes. Main factors affecting bioleaching physicochemical temperature, ph microbiological microbial diversity culture population density. Introduction bioleaching is the simple and effective technology for metal extraction from low grade ores and mineral concentrate by the use of micro organisms.
Bioleaching is a simple and effective technology for metal extraction from lowgrade ores. Objectives after the end of the presentation well know. Suitable bacteria that can survive at high temperatures, acid concentrations, high concentrations of heavy metals, remaining active under such circumstances, are to be selected to ensure successful bioleaching. Bio leaching group members mehwish nazeer, kanza saleem, nazish mehmood m. Bioleaching of metal sulfides is performed by a diverse group of microorganisms. How to download powerpoint 2016 presentation for free. Biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. In an effort to develop alternate techniques to recover metals from waste electrical and electronic equipment weee, this research evaluated the bioleaching efficiency of gold au, copper cu and nickel ni by two strains of aspergillus niger in the presence of goldplated finger integrated circuits found in computer motherboards gficms and cellular phone printed circuit boards pcbs. Microsoft focuses entirely on distribution with online installers, and makes it extremely hard to find usable disk images for offline installation. Bioleaching free download as powerpoint presentation. Bioleaching is the process by which metals are dissolved from ore bearing rocks using microorganisms. Universal reserves of highgrade ores are diminishing at an alarming rate due to the rapid increase in the demand for metals.
Bioleaching microbial leaching, being an economical and environmental friendly process, is investigated extensively for metal extraction from secondary solid wastes, viz. Ppt biomining and bioleaching powerpoint presentation. Slide presentation software, ppt microsoft powerpoint. Major objectives of our present work were to isolate an organism from indian. Objectives after the end of the presentation well know biohydrometallurgy and its applications bioleaching microorganisms involved in bioleaching bioleaching process factors and parameters influencing bioleaching advantages and disadvantages of bioleaching bioleaching of some metals gold. Recent development has shown commercial application of the process and, concurrently, details pertaining to the key microorganisms involved in these processes have been described.
Microsoft powerpoint 2016 free download fileplanet. Bioleaching of metal sulfides is caused by diverse groups of bacteria. Office 2016 is the latest version in the microsoft office family. Cards for pupils to create a flowchart on how pure copper is obtained from lowgrades ores via bioleaching and phytomining. Your message has been sent, please check your email shortly. Microbial oxidation of gold ores and gold bioleaching. Bioleaching is broadly used in the heap leaching of secondary copper sulfide minerals. Ppt biomining and bioleaching leon nyamweda academia. A series of lessons that focus on how copper is extracted via heating with carbon, electrolysis, displacement using scrap iron, thermally decomposing copper sulphide, phytomining and bioleaching. Bioleaching is the extraction of specific metals from their ores through the use of bacteria.
Bioleaching, or microbial ore leaching, is a process used to extract metals from their ores using bacterial microorganisms. These include mineral formation, mineral degradation, sedimentation and geochemical cycling. Broadway, red lodge, mt 59068, usa received 11 january 1994. Bioleaching technology in minerals processing john neale mintek, biotechnology division private bag x3015, randburg, 2125, south africa bioleaching is a process that employs microorganisms to dissolve leach sulphide minerals.
Ores with low metal content are not suitable for direct smelting but it is possible to extract metals economically using the activity of microorganisms. 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 the extraction of specific metals from their ores through biological means, usually microorganism. Bioleaching is the extraction of metals from their ores through the use of living organisms. Bioleaching and phytomining extraction of copper by. Search by name or directly paste the link of video you want to convert. Mesophiles moderately thermophilic bacteria extremophiles. Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper, zinc, lead, arsenic, antimony, nickel, molybdenum, gold, silver, and cobalt. Find powerpoint presentations and slides using the power of, find free presentations research about copper bioleaching ppt. Bioleaching for copper extraction of marginal ores from the.
Your message has been sent, please check your device shortly. Presentation on mechanisms and applications of chalcopyrite and. Downloads saved resources author dashboard add resource my shop tes elements community. Youtube downloader download video and audio from youtube. A free powerpoint ppt presentation displayed as a flash slide show on id. Bioleaching application of biotechnology in mining industry. Download this books into available format unlimited. Create or view powerpoint presentations with this uptodate version of the popular software package.
The metals can be recovered by the microorganisms by two processes. Leaching generally refers to the removal of a substance from a solid via a liquid extraction media. Methods of metal recovery by microorganisms 2 methods. Ppt leaching powerpoint presentation free to download. Here is a small powerpoint presentation on bioleaching a phytomining. Bioleaching of gold, copper and nickel from waste cellular. Microsoft powerpoint is the best presentation software for meetings, industry talks and business proposals. Presentation on mechanisms and applications of chalcopyrite and pyrite bioleaching in biohydrometallurgy a presentation. Asian nuclear prospects 2010 bioleaching an alternate uranium ore processing technology for india abhilash, k. In the comments section, many of you were asking how to actually download the presentation made by us. If so, share your ppt presentation slides online with. The dissolution chemistry of metal sulfides follows two pathways, which are determined by the mineralogy and the acid solubility of the metal sulfides.
Download free powerpoint themes and powerpoint backgrounds for your presentations. View and download powerpoint presentations on copper bioleaching ppt. Materials and the environment links chemical, metallurgical, and other metal inherent systems with microbes, and analyzes the interdependence between them. The environmental consequences of mining and quarrying are vast, as highlighted in the mining section. Direct bacterial leaching in this process, a physical contact exist between. In this way, the bioleaching, by acidithiobacillus ferrooxidans, in columns and. Author links open overlay panel huang tao a b li dongwei a b. It finds application in the extraction of metals from their ores. But these processes employed a highly acidic environment supplemented with thermal or electrical energy for recovering a sizeable amount of metals. Bioleaching can be applied to various ore types through microbial generation of leach agents. Two typical bioleaching applications and technological processes, bioheap. Natural bioleaching has been taking place for almost as long as the history of the world, but it is only in the last few decades that we have realized that bioleaching is responsible for acid production in some mining wastes, and that this bacterial activity can be used to liberate some metals. Bioleaching is a new technique used by the mining industry to extract minerals such as gold and copper.
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. Minerals free fulltext copper bioleaching in china. Introduction future sustainable development requires measures to reduce the dependence on nonrenewable raw materials and the demand for primary resources. Add a hyperlink to a slide powerpoint for office 365 powerpoint for office 365 for mac powerpoint for the web powerpoint 2019 powerpoint 2016 powerpoint 20 powerpoint 2010 powerpoint 2016 for mac powerpoint for mac 2011 powerpoint for ipad powerpoint for iphone powerpoint for android tablets powerpoint for android phones powerpoint mobile more. Download and install or reinstall office 2016 or office. Pictures of each step in the process, a description to link to and differentiated questions. There have been discoveries of newly identified acidophilic microorganisms that have unique characteristics for effective bioleaching of sulfidic ores and concentrates. Feasibility step ii and basic engineering complementary testwork on bioleaching, zinc solvent extraction and electrowinning.
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