Ppt biomining and bioleaching powerpoint presentation. Pfd and bfd often contain material and energy balance information, which could explain the reluctance in updating or even developing them. What is the difference between a process flow diagram and a flowchart. Development programundp, started in 1985 with the participation of.
Recently, a heap bioleaching process was developed in russia for the recovery of valuable copper and nickel from lowgrade ore with a less. Specific extraction methods depend on the soluble characteristics relative to the sorbent material such as concentration, distribution, nature, and size. Created using powtoon free sign up at create animated videos and animated presentations for free. European and transnational programs fund projects with a focus on.
Work together on diagrams from a web browser, almost anywhere. Bioleaching definition of bioleaching by merriamwebster. Rebgolds proprietary bioleaching process recovers valuable metals from crushed ore, neutralizes sulphides causing acid rock drainage and stabilizes toxic elements such as arsenic and cadmium. Full ms office, box, jira, gsuite, confluence and trello integrations. The process of leaching metals from ore by using bacteria or fungi to convert the metals into a soluble form. Effect of graphite on copper bioleaching from waste printed. 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. In addition, the effects of bacteria and chemical reagents on wpcb copper leaching were compared, and the mechanism of bacteria action was clarified. Some question the use of bioleaching by claiming that it is a time consuming process. A new mining concept for extraction metals from deep ore deposits. Gcse chemistry extraction of copper thermal decomposition. The dissolution biochemistry signifies two types of. Top reasons smartdraw is the best diagram software.
Thermal decomposition means that the compound breaks down into other substances when it is heated. It will allow you to open any diagram and make modifications. For these reasons, setup of bioleaching must be carefully planned, since the process can lead to biosafety failure. This process is commonly referred to as extraction, particularly in the chemical industry. As an alternative to smelting or roasting, miners use bioleaching when there are lower concentrations of metal in ore and they need an efficient, environmentally responsible method to extract it. 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. 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. A process flow diagram pfd, also known as a flowsheet, is a type of flowchart used by chemical and process. The shift of microbial communities and their roles in.
Even though the ehph diagram of licoh2o shows that licoo2 is. Oct 19, 20 cards for pupils to create a flowchart on how pure copper is obtained from lowgrades ores via bioleaching and phytomining. New resources for metals must be developed with the aid of novel technologies. Works on mac, pc, and linux and integrated with your favorite apps. Crushed ore is delivered from a the crushing circuit to a flotation plant. In recent years heap leaching has been used for copper extraction and pretreatment of gold refractory ores olson et al. A bioleaching process developed in two separate steps was investigated for the recovery of base metals, precious metals and rare earth elements from dusts generated by waste electrical and. In this video, we look at how to extract metals such as copper from lowgrade ores using phytomining and bioleaching. Bioleaching of basic metals from electronic waste pcbs. Powerful diagramming software including thousands of templates, tools and symbols. Finally, the best graphiteleaching conditions for bioleaching copper from wpcbs were determined. Biomining and bioleaching a free powerpoint ppt presentation displayed as a flash slide show on id.
Leaching is a process of extracting a substance from a solid material that is dissolved in a liquid. Oct 10, 2017 created using powtoon free sign up at create animated videos and animated presentations for free. This has culminated in the design, commissioning and operation of the copper heap bioleaching pilot plant shown below. You can use it as a flowchart maker, network diagram software, to create uml online, as an er diagram tool, to design database schema, to build bpmn online, as a circuit diagram maker, and more. In order to reveal the whole bioleaching process, microbial components and functional potentials in all three subsystems were investigated in this study. Sulfidic iron ores can be added to speed up the process and provide a source of. The solution is called a leachate and the process is called bioleaching. Mesophiles moderately thermophilic bacteria extremophiles. The bacteria feeds on nutrients in minerals, thereby separating the metal. The bacteria feed on nutrients in the minerals, causing the metal to separate from its ore. Usim pac, process modeling and simulation software caspeo. This is the oxidation of sulfide minerals associated with but not necessarily part of the mineral of interest to be extracted. Draw a flowchart, map an it network, build an organizational chart, or.
The naturally occurring mineral leaching is very slow. Bioleaching is leaching where the extraction of metal from solid minerals into a solution is facilitated by the metabolism of certain microbes bioleaching microbes. Connect your flowcharts and diagrams to realtime data. The bioleaching of concentrates is an intensive process that requires the use of huge mechanicallyagitated.
Create professional flowcharts, process maps, uml models, org charts, and er diagrams using our templates or import feature. Bioloeaching and bioheap are both explained as are results from trials to date, as well as the economics of the process. Click simple commands and smartdraw builds your diagram for you, automatically. Experiences and future challenges of bioleaching research in. You should create your process flow diagram so that it focuses on major plant processes and not show minor details. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. A process flow diagram pfd, also known as a flowsheet, is a type of flowchart used by chemical and process engineers to illustrate highlevel processes. With this software, you can create flowcharts, wireframe diagrams, uml diagrams, smartphone mockups and more. Easily create a visual representation of a process, organization, mind map or other diagram. In microbial leaching bioleaching, metals can be extracted from large quantities of low grade ores. Usim pac includes a set of data representation tools. A diagrammatic representation of general bioleaching process is depicted in fig. The microbial bioleaching process can be optimized by creating ideal conditions temperature, ph, and nutrient, o 2 and co 2 supply etc. Bioleaching of gold, copper and nickel from waste cellular.
Bioleaching application of biotechnology in mining industry. Bioheap a bioleaching process for nickel extraction. Once rfflow is installed, you can open the above drawing in rfflow by clicking on processflowdiagram2. This process takes advantage of both insitu recovery, for minimizing environmental impact and reducing waste seredkin et al.
Block diagram of a copper heap bioleaching process 22. Figure 2 shows a flow diagram of gold, copper and uranium heap leach. The metals commonly extracted using this process include gold, silver, zinc, copper, lead. Development of a mathematical model for continuous tank. This makes our flow chart software an ideal method to. Reactors for bioleaching processes john neale mintek, biotechnology division private bag x3015, randburg, 2125, south africa productionscale bioleaching operations are carried out in some of the largest process reactors in the world. Pdf bioleaching process for metal recovery from waste. Rebgolds bioleaching process produces gold and other metals. Diagnostic leaching can be used as an analytical tool to establish the distribution of gold within different.
Bioleaching of sulphide minerals is an important process that has the potential for application in the recovery of copper, gold, cobalt and other base metals. The software is based on html5 and javascript and works as a web app inside your browser. Traditionally, this is carried out by naturally occurring micro organisms, usually thermophiles, which are micro organisms usually found in acidic environments produced by the oxidation of sulphur for example in and around hot springs, volcanic regions and sulphiderich areas. Diagram software free online app or download smartdraw. The profit obtained from the speed and yield of smelting justifies its cost. The scientific monitoring of a copper industrial rom bioleaching process. In the bioleaching process, many factors in ore, water and sediments are important contributors as driving forces to improve leaching efficiency. Files included 1 copper bioleaching and phytomining. Biological methods of metal extraction higher material. What are the advantages of using bioleaching to extract copper. Bioleaching of metal sulfides is caused by diverse groups of bacteria.
Bioleaching is a process described as the use of microorganisms to transform elements so that the elements can be extracted from a material when water is filtered trough it. Through using bioleaching, the cost of the project is greater but the returns are greater as well. These ions are leached from the ash using sulfuric acid. An overview of bioleaching of each metal substrate and opportunities for future research. Identify bottlenecks and find opportunities to optimize processes. Predictive modeling and response analysis of spent. Phytomining involves growing plants on top of low grade ores. There has been increased interest in the commercial. Bioleaching is the process by which metals are dissolved from ore bearing rocks using microorganisms.
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. The bacteria feeds on nutrients in minerals, thereby separating the. Introduction bioleaching is the simple and effective technology for metal extraction from low grade ores and mineral concentrate by the use of micro organisms. Use applied shape formatting to automatically update flowcharts when the underlying data changes, either in visio or through office 365. Bioleaching definition of bioleaching by medical dictionary. In the process of bacterial growth, the role of graphite was discussed in detail. What are the disadvantages of using bioleaching to extract.
Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and reseparate them after their division from other earth materials. Process flow diagram software free process flow diagram. Pdf scientific monitoring of industrial bioleaching process. One biooxidationheap process for pretreatment of sulfidicrefractory gold ores was also commercialized. Effect of graphite on copper bioleaching from waste. A fluidised bed reactor as a tool for the investigation of. A twostep bioleaching process was adopted where the culture was grown to a maximum cell density prior to the addition of the spent catalyst. Process bioleaching can involve numerous ferrous iron and sulfur oxidizing bacteria, including acidithiobacillus ferrooxidans formerly known as thiobacillus ferrooxidans and acidithiobacillus thiooxidans formerly known as thiobacillus thiooxidans. Pictures of each step in the process, a description to link to and differentiated questions. Phytomining and bioleaching gcse triple award revision. Bioleaching certain bacteria can break down lowgrade ores to produce an acidic solution containing copper ions. The traditional method of extraction is to heat the copper sulfide. Apr 17, 2004 bioleaching definition is the extraction of valuable metals such as copper and gold from ores through the action of microorganisms such as bacteria.
Flowchart software simplifies the process of creating flowcharts for developing ideas, workflows, or project designs, among other things. Bio leaching group members mehwish nazeer, kanza saleem, nazish mehmood m. Bioleaching of nonsulfidic ores such as pitchblende also uses ferric iron as an oxidant e. Bioleaching is used today in commercial operations to process ores of copper, nickel, cobalt, zinc and uranium, whereas, biooxidation is used in gold processing and coal. This heap leaching process is applicable for the recovery of rees from secondary resources such as mining and coal residues. Bioleaching process for metal recovery from waste materials. Bioleaching, or microbial ore leaching, is a process used to extract metals from their ores using bacterial microorganisms. A novel reductive approach to bioleaching nickel laterite minerals has been proposed.
Process flow diagram software free process flow diagram pfd. Unanswered questions what is the particular type of processor model and operating system on which a computer is based called. There are many parameters influencing bioleaching such as ph, temperature, pulp density, bacterial growth, particle size, etc. Bioleaching involves bacteria which feed on the low grade ore and absorb the copper ions. In this study, feso47h2o and s0 as energy substrates were added to an oxiderich, lowgrade copper ore to explore the influence of biological and environmental factors on leaching efficiency.
But, advertisement aside, this is one of the best diagramming software available in the market today. Scrap iron can be used to displace the copper from the leachate. Schematic description of oxygen transfer and oxygen. Dont dismiss process flow diagrams chemical processing. There have been discoveries of newly identified acidophilic microorganisms that have unique characteristics for effective bioleaching of sulfidic ores and concentrates. Methods of metal recovery by microorganisms 2 methods. The above process flow diagram or pfd was drawn with the rfflow software. Mintek has developed considerable experience in heap leaching and heap bioleaching, and has undertaken an advanced research programme investigating the hightemperature heap bioleaching of lowgrade chalcopyrite. The bionic process for bioleaching of nickel sulfide concentrates is illustrated. Add or remove an element, and smartdraw realigns and arranges everything automatically for great results every time. The plants absorb copper ions through their roots the plants are then burnt to ashes containing copper ions. Leaching is the process of a solute becoming detached or extracted from its carrier substance by way of a solvent leaching is a naturally occurring process which scientists have adapted for a variety of applications with a variety of methods. Sustainability free fulltext a brief note on the heap. The biomore project proposes indirect insitu bioleaching as an alternative mining technology.
Steadystate process modeling and simulation software to design and optimize. Bioleaching is the use of bacterial microorganisms to extract precious metals, such as gold, from ore in which it is embedded. Numerical modelling of column experiments to investigate in. What are the disadvantages of using bioleaching to extract copper. Application of bioleaching to copper mining in chile bioline. The bioleaching process is achieved by onestep, twostep and spent mediumstep in batch mode or by continuous mode reported to be promising on quantitative extraction of various metals ni, co. Jul 01, 2015 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. Introduction future sustainable development requires measures to reduce the dependence on nonrenewable raw materials and the demand for primary resources. Currently it is more economical to smelt copper ore rather than to use bioleaching, since the concentration of copper in its ore is generally quite high. Some people consider process flow diagrams just another term for flowcharts, and if thats what youre looking for, smartdraw is the perfect flowchart software. If you havent already done so, first download the free trial version of rfflow. Bioleaching and phytomining are increasingly used to extract copper from low grade ores see below. However a study by mujeeburrehman shows that 75 percent of the copper in the ore studied was leached in 144 hours. Create process flow diagram examples like this template called petroleum refinery process that you can easily edit and customize in minutes.
Copperii sulfide gives copper and sulfur dioxide during thermal decomposition. Flow sheet of the methodology used for the classification of deposits suitable for. The catalytic effect of copper ion in the bioleaching of. Metal ores are a finite resource which are in limited supply. Scrap iron can then be used to displace the copper from the leachate. Recent development has shown commercial application of the process and, concurrently, details pertaining to the key microorganisms involved in these processes have been described. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually. Bioleaching is used today in commercial operations to process ores of copper, nickel, cobalt, zinc and uranium, whereas, biooxidation is used in gold processing and coal desulfurization.
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