Bioleaching bioleaching is the extraction of metals from their. When it comes to presenting a project or idea, giving a conference or explaining any. Microbial oxidation of gold ores and gold bioleaching. Bioleaching is the biological conversion of an insoluble metal compound to a water soluble form. Winner of the standing ovation award for best powerpoint templates from presentations magazine. A qualifying office 365 subscription is required for word, excel, powerpoint and outlook. Academics in bioleaching bacterial leaching academia. Microsoft powerpoint free version download for mac os x. Bioleaching of chalcopyrite university of birmingham. Bioleaching is a simple and effective technology for metal extraction from lowgrade ores. Cards for pupils to create a flowchart on how pure copper is obtained from lowgrades ores via bioleaching and phytomining.
Bioleaching is a new technique used by the mining industry to extract minerals such as gold and copper. The target can be the reuse of minerals, reduction of heavy metals or the recovery of metals. This is much cleaner than the traditional method using cyanide. Some of the types of bacteria used in this process include leptospirillum ferrooxidans, thiobacillus ferrooxidans, and some species of sulfolobus, acidianus, and sulfobacillus. Mit dem powerpoint viewer lassen sich powerpointprasentationen auch ohne microsoft office ansehen. Bioleaching can be applied to various ore types through microbial generation of leach agents. How to download microsoft powerpoint on a mac computer. We hope to have the first industrial and operational stages with this new technology running by early 2010, says ricardo badilla, biosigmas general manager. With the mac version of microsoft powerpoint from the famous office suite, you can create all sorts of presentations integrating multimedia elements. Bioleaching application of biotechnology in mining industry. Biomining presentation free download as powerpoint presentation. Download for mac polleverywhere in powerpoint on laptop.
Bioleaching definition of bioleaching by merriamwebster. Bioleaching is the extraction of metals from their ores through the use of living organisms. Files included 1 copper bioleaching and phytomining. The interest in biohydrometallurgy has increased recently in order to minimize the sulfur dioxide emissions, and to reduce energy. 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. Introduction bioleaching is the simple and effective technology for metal extraction from low grade ores and mineral concentrate by the use of micro organisms. Column leaching operate in the principle of precolator leaching used as model for heap or dump leaching process column may be made of glass, plastic, lined concrete or steel.
Microsoft powerpoint for mac is primed for use on tablets and phones, so you can swipe and tap your way through presentations. Microsoft powerpoint 2016 for mac free download and. Biomining is done in two steps often called bioleaching and biooxidation. The actual developer of this mac application is microsoft. Energy efficient, using almost half as much energy as traditional extraction. Bioleaching processes are originated in the mining industry.
Bioleaching definition of bioleaching by medical dictionary. Phytoming and bioleaching extraction of copper from ores bioleaching advantages we can use waste ores, reducing the impact of mining on the environment. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Bioleaching definition is the extraction of valuable metals such as copper and gold from ores through the action of microorganisms such as bacteria. Biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates. The powerpoint app gives you access to the familiar tool you already know. Bioleaching is one of several methods used to recover copper, zinc, lead, arsenic, antimony, nickel, molybdenum, gold, silver, and cobalt bioleaching uses certain types of bacteria to produce a solution called a leachate.
Chalcopyrite cufes 2 is the most important copper ore, comprising approximately 70% of copper reserves in the world 1,2. 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. Bioleaching commonly refers to biomining technology applied to base metals. We are currently using them in a modified way to treat residues form waste incineration plants containing minerals and metals. Bioleaching definition of bioleaching by the free dictionary. Information and translations of bioleaching in the most comprehensive dictionary definitions resource on the web. Biomining presentation chemistry natural materials. The ultimate resource for scientific lectures and seminars in biomedicine.
Bioleaching is getting metals from their ores by using living organisms. These include mineral formation, mineral degradation, sedimentation and geochemical cycling. Biomining and bioleaching is the property of its rightful owner. Simultaneous culture and biomachining of copper in mac medium. Start quickly with the most recent versions of word, excel, powerpoint, outlook, onenote and onedrive combining the familiarity of. The leaching efficiency was observed to be more or less the same in both the cases confirming that metabolites produced during growth of the microorganism, played a. 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. 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. Bioleaching rate and sulfide dissolution yields wide range of do concentration below and above 6ppm oxygen transfer biomass to study bioleaching efficiency vs. Bioleaching of metal sulfides is performed by a diverse group of microorganisms and microbial communities. The ore minerals of the metals copper, nickel, cobalt, and zinc occur in nature mainly as metal sulfides. Bioleaching article about bioleaching by the free dictionary. Optimization of parameters affecting recovery of copper.
In metallurgical applications, chalcopyrite is mainly subjected to pyrometallurgy treatment after concentration by a flotation process 3,4. Heap bioleaching of ores a rapidly developing technology undoubtedly, heap bioleaching has had a considerably bigger impact on the base metal industry than tank bioleaching. Broadway, red lodge, mt 59068, usa received 11 january 1994. Methods of metal recovery by microorganisms 2 methods. Presenter view automatically adapts to your projection setup, and you can even use it on a single monitor, themes now come with variations, which make it simpler to hone in on the look you want, and. 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. Soil microorganisms are very closely involved as catalytic agents in many geological processes. You can download microsoft powerpoint on your mac computer in the app store and use it with a office 365 plan. Thermophilic bacteria hetrotrophic bacteria and fungi 1. The technology has its origins in chile, where acidsoluble copper oxide heap leach operations were adapted to treat secondary copper sulfide ores. The oxidizing agent ironiii for the metal sulfides originates from the microbial ironiioxidation.
The process of leaching metals from ore by using bacteria or fungi to convert the metals into a soluble form. Bioleaching of covellite from low grade copper sulphide. In recent years, a new discipline of mineral science namely biohydrometallurgy. It finds application in the extraction of metals from their ores. Files available from the acs website may be downloaded for personal use only. Bioleaching of heavy metals by sulfur oxidizing bacteria. Bioleachingminerals biooxidation and bioremediation have been widely used commercially for heapdump bioleaching of secondary. Pictures of each step in the process, a description to link to and differentiated questions. The most popular versions of microsoft powerpoint for mac are 14.
Microsoft powerpoint for mac download free 2020 latest. Bio leaching group members mehwish nazeer, kanza saleem, nazish mehmood m. Bioleaching of metal sulfides is caused by diverse groups of bacteria. Find powerpoint presentations and slides using the power of, find free presentations research about copper bioleaching ppt. Metal recovery from sulfide minerals is based on the activity of chemolithotrophic bacteria, mainly thiobacillus ferrooxidans and t.
Quickly create, edit, view, present, or share presentations quickly and easily from anywhere. Heap bioleaching of copper ores historical and current cu production tyear. Powerpoint fur microsoft 365 fur mac, powerpoint 2019 fur mac. Get the students to arrange the cards onto a3 paper and annotatebuild a flow chart. Now containing an exhaustive set of presentation tools, including more than 2400 objects, slides and slide templates from such diverse fields as biochemistry, pharmacology, molecular pathology, signaling, biology, and methods. Powerpoint is topdrawer presentation software, and the 2016 mac edition gains a handful of useful additions to keep the tool vital. Bioleaching of gold, copper and nickel from waste cellular. View and download powerpoint presentations on copper bioleaching ppt. Recent development has shown commercial application of the process and, concurrently, details pertaining to the key microorganisms involved in these processes have been described. Nonsulfide ores and minerals can be treated by heterotrophic. Biomining is the extraction of specific metals from their ores through biological means, usually microorganism.
Thermophilic bacteria typically employed in the bioleaching of sulfide ores and environmental. Microsoft powerpoint 2016 for mac is an application which can be used for creating some stellar presentations. Mesophiles moderately thermophilic bacteria extremophiles. Names of worlds major mines producing copper through mass bioleaching 12. Mineralogical characterization of chalcopyrite bioleaching. The economic importance of copper production in chile has prompted the study of new strategies for the optimal management of mineral resources, including processing of low grade ore and even processing tails processed ore. Ppt biomining and bioleaching powerpoint presentation. Bioleaching is the extraction of specific metals from their ores through the use of bacteria.
Speichern einer prasentation als filmdatei oder mp4datei. Brief overview of microsoft powerpoint 2016 for mac os x. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. 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. The bioleaching of the nodules was carried out in two different ways a leaching during the growth of the isolate and b leaching by spent liquor after removal of fully grown cells. 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. The diversity and commonality of the microbial leaching process can be easily studied through comparing the bioleaching mechanism and the application of these.
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