金属污染物生物修复研究进展

Yuvarajan Ragunathan, Kannan Nallakumar, T. Rathinavel, M. Govarthanan, Selvankumar Thangaswamy
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引用次数: 3

摘要

生物膜是由于基因表达不同于自由漂浮的表达,导致单个或多种微生物群体通过膜结合物质存在于表面的积累,并导致表达基因调节生物膜的形成和发育。在这方面,微生物基重金属的最新进展推动了生物修复作为传统技术的一种有前景的替代方案。有机污染物的吸附和生物降解以及金属的固定化、动员和/或转化是主要的修复过程,可以通过在高浓度污染物的恶劣环境中生存的几种微生物的作用来介导。本章讨论了生物膜降解金属污染物的形成和调控,基因转移的重要性,以及生物膜介导的生物修复过程的应用。
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Recent Advancements in Bioremediation of Metal Contaminants
Biofilms are an accumulation of single or various populations of microorganisms that are present on the surfaces through membrane-bound substances due to the gene expression, which differs from free-floating expression and leads to expressed genes regulating biofilm formation and development. In this regard, recent advances in microbial-based heavy metals have propelled bioremediation as a prospective alternative to conventional techniques. Adsorption and biodegradation of organic contaminants and the immobilization, mobilization, and/or transformation of metals are the main remediation processes that can be mediated by the action of several microorganisms surviving in hostile environments with high concentrations of pollutants. The chapter discussed the formation and regulation of biofilms to degrade the metal contaminant, the importance of gene transfer, and applications of biofilm-mediated bioremediation processes.
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