>
Fa   |   Ar   |   En
   bioleaching for nanoparticle production as a solution for environmental pollution  
   
نویسنده haghighatjoo motahare ,mohammadi ali
منبع ايمني زيستي - 2020 - دوره : 13 - شماره : 3 - صفحه:61 -70
چکیده    Environmental pollution of heavy metals and plastics has been a great challenge of the last century. ewastes increase heavy metals and plastics concentration in the environment. these toxic substances are a threat to organisms. so their removal from the environment seems necessary. there are different disposal methods like landfilling and incineration, which cause a great deal of damage to the environment. on the other hand, the need for precious metals recovery like gold and silver from ewaste makes recycling necessary. nevertheless, these methods are generally expensive. so applying a new alternative is required. the purpose of this paper is to introduce bioleaching as an alternative to conventional disposal and recycling methods. this method is used to remove the heavy and toxic metals in order to produce metallic nanoparticles. then the application of nanoparticles in wastewater treatment and microplastics degradation is mentioned. the conversion of insoluble metals to soluble ones by microorganisms is called bioleaching. bacteria like chromobacterium violaceum, pseudomonas species, sulfobacillus thermosulfidooxidans, and acidiphilium acidophilum bioleach gold, silver, nickel, and copper of electronic wastes. there are different fungi like aspergillus niger, penicillium simplicissimum, aspergillus fumigatus, and aspergillus flavus that generate organic acid to leach out copper, lead, nickel, and aluminum. morganella produces copper nanoparticles from wastes. factors like microorganisms, particle sizes, temperature, and ph affect the bioleaching process. bioleaching is a substitution for recycling methods of electronic wastes. wastewater treatment and photocatalytic degradation of microplastics are two critical applications of produced nanoparticles.
کلیدواژه biosafety ,nanoparticle producing bacteria ,bioleaching ,heavy metals ,microplastic
آدرس alzahra university, faculty of biology, department of biotechnology, iran, alzahra university, faculty of biological sciences, department of microbiology, iran
پست الکترونیکی a.mohammadi@alzahra.ac.ir
 
   Bioleaching for Nanoparticle Production as a Solution for Environmental Pollution  
   
Authors Haghighatjoo Motahare ,Mohammadi Ali
Abstract    Environmental pollution of heavy metals and plastics has been a great challenge of the last century. Ewastes increase heavy metals and plastics concentration in the environment. These toxic substances are a threat to organisms. So their removal from the environment seems necessary. There are different disposal methods like landfilling and incineration, which cause a great deal of damage to the environment. On the other hand, the need for precious metals recovery like gold and silver from ewaste makes recycling necessary. Nevertheless, these methods are generally expensive. So applying a new alternative is required. The purpose of this paper is to introduce bioleaching as an alternative to conventional disposal and recycling methods. This method is used to remove the heavy and toxic metals in order to produce metallic nanoparticles. Then the application of nanoparticles in wastewater treatment and microplastics degradation is mentioned. The conversion of insoluble metals to soluble ones by microorganisms is called bioleaching. Bacteria like Chromobacterium violaceum, Pseudomonas species, Sulfobacillus thermosulfidooxidans, and Acidiphilium acidophilum bioleach gold, silver, nickel, and copper of electronic wastes. There are different fungi like Aspergillus niger, Penicillium simplicissimum, Aspergillus fumigatus, and Aspergillus flavus that generate organic acid to leach out copper, lead, nickel, and aluminum. Morganella produces copper nanoparticles from wastes. Factors like microorganisms, particle sizes, temperature, and pH affect the bioleaching process. Bioleaching is a substitution for recycling methods of electronic wastes. Wastewater treatment and photocatalytic degradation of microplastics are two critical applications of produced nanoparticles.
Keywords Biosafety ,Nanoparticle Producing Bacteria ,Bioleaching ,Heavy Metals ,Microplastic
 
 

Copyright 2023
Islamic World Science Citation Center
All Rights Reserved