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Recovery and Recycling of Valuable Metals from Low-Grade Ores Using Microorganisms: A Brief Review


Kumkum Kar1, Abuzar Roshni2, and Md. Anwar Hossain1* 

1Dept. of Biotechnology and Genetic Engineering, Noakhali Science and Technology University (NSTU), Noakhali-3814, Bangladesh; and 2Dept.  of Biochemistry and Molecular Biology, Gono Bishwabidyalay, Savar, Dhaka-1344, Bangladesh. 

*Correspondence: anwar@nstu.edu.bd (Md. Anwar Hossain, Assistant Professor, Dept. of Biotechnology and Genetic Engineering, NSTU, Noakhali-3814, Bangladesh).

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ABSTRACT

The demand for metals is ever increasing with the advancement of the industrialized world. But the global reserve high levels of ores are adjacent to decline. However, there exists there is a vast reserve of metals inferior ore, and other subsidiary sources. Low category ores as well as metal recovery conventional strategies such as pyrometallurgy, hydrometallurgy, etc., require strong and asset inputs that are often environmentally friendly pollution. Accordingly, there is required for the utilization of more coherent technologies to the recuperation of metals. The utilization of microbes to recovery metal ions is considered a unique key optimistic and revolutionary field of environmental biotechnology. The components of this method are disintegrated in an aqueous solution, which provides them more effective in addition, treatment, and convalescence. Recycling giant metals is also very important to prevent pollution and to prevent wastage of sources. Biological means are also used to easily recycle metals from their secondary sources. In this research, various approaches using microbes to recover giant metals from primary (low-grade ore) and secondary (electronic wastes) sources are discussed. Future prospects of utilizing microbes are also granted here. 

Keywords: Microorganisms, Metal ore, Recycling, Bioleaching, Biosorption, Recovery, and Electronic waste.

Citation: Kar K, Roshni A, and Hossain MA. (2021). Recovery and recycling of valuable metals from low-grade ores using microorganisms: a brief review. Am. J. Pure Appl. Sci., 3(1), 1-16. https://doi.org/10.34104/ajpab.021.01016


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