Unraveling the Potentials of Extremophiles in Bioextraction of Valuable Metals from Industrial Solid Wastes: An Overview

被引:0
|
作者
Adetunji, Adegoke Isiaka [1 ]
Erasmus, Mariana [1 ]
机构
[1] Univ Free State, Ctr Mineral Biogeochem, ZA-9301 Bloemfontein, South Africa
关键词
extremophiles; microorganisms; valuable metals; bioleaching; industrial solid waste; sustainability; LIFE-CYCLE ASSESSMENT; INCINERATION FLY-ASH; MOBILE PHONE PCBS; ZN-MN BATTERIES; HEAVY-METALS; ACIDITHIOBACILLUS-THIOOXIDANS; BIOMETALLURGICAL RECOVERY; ACIDOPHILIC BACTERIA; ELECTRONIC EQUIPMENT; BIO-DISSOLUTION;
D O I
10.3390/min14090861
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The continuous dumping of industrial solid wastes into the immediate environment is incommodious since these waste materials cause pollution and serious hazards to human health. In addition, these solid wastes are complex and consist of toxic chemical substances, heavy metals, and valuable metals, hence warranting treatment before disposal. Bioleaching is a green and sustainable technology for the solubilization and mobilization of metals from solid matrices. The leaching efficacy is contingent on the types and physiology of the organisms, the elemental content of the solid wastes, and the presence of appropriate bioprocess parameters at optimum conditions. Extremophilic microbes, including thermophiles, acidophiles, alkaliphiles, and halophiles, are recognized as excellent biological agents for the efficient bioextraction of metals from industrial solid wastes due to their aptitude for survival under harsh bioleaching conditions. Therefore, this review provides insights into the employability of extremophilic microorganisms as a biofactory for the recovery of valuable metals from various industrial solid wastes. More so, it discusses the sustainability of the bioleaching technique in terms of its life cycle assessment (LCA) and techno-economic analysis.
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页数:24
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