Health hazards of hexavalent chromium (Cr (VI)) and its microbial reduction

被引:300
作者
Sharma, Pooja [1 ,2 ]
Singh, Surendra Pratap [3 ]
Parakh, Sheetal Kishor [1 ,2 ]
Tong, Yen Wah [1 ,2 ,4 ]
机构
[1] Natl Univ Singapore, Environm Res Inst, 1 Create Way, Singapore, Singapore
[2] Energy & Environm Sustainabil Megac E2S2 Phase II, Campus Res Excellence & Technol Enterprise Create, Singapore, Singapore
[3] Chhatrapati Shahu Ji Maharaj Univ, Dayanand Anglo Ved PG Coll, Dept Bot, Plant Mol Biol Lab, Kanpur, Uttar Pradesh, India
[4] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore, Singapore
基金
新加坡国家研究基金会;
关键词
Microbial bioremediation; biosorption; environmental contaminates; health hazards; chromium toxicity; AQUEOUS-SOLUTION; WASTE-WATER; TOXIC CHROMIUM; HEAVY-METALS; REMOVAL; BIOSORPTION; BIOREMEDIATION; POLLUTANTS; CR(VI); REMEDIATION;
D O I
10.1080/21655979.2022.2037273
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Industrial effluents/wastewater are the main sources of hexavalent chromium (Cr (VI)) pollutants in the environment. Cr (VI) pollution has become one of the world's most serious environmental concerns due to its long persistence in the environment and highly deadly nature in living organisms. To its widespread use in industries Cr (VI) is highly toxic and one of the most common environmental contaminants. Cr (VI) is frequently non-biodegradable in nature, which means it stays in the environment for a long time, pollutes the soil and water, and poses substantial health risks to humans and wildlife. In living things, the hexavalent form of Cr is carcinogenic, genotoxic, and mutagenic. Physico-chemical techniques currently used for Cr (VI) removal are not environmentally friendly and use a large number of chemicals. Microbes have many natural or acquired mechanisms to combat chromium toxicity, such as biosorption, reduction, subsequent efflux, or bioaccumulation. This review focuses on microbial responses to chromium toxicity and the potential for their use in environmental remediation. Moreover, the research problem and prospects for the future are discussed in order to fill these gaps and overcome the problem associated with bacterial bioremediation's real-time applicability.
引用
收藏
页码:4923 / 4938
页数:16
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