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Bioleaching for environmental remediation of toxic metals and metalloids: A review on soils, sediments, and mine tailings
Chemosphere ( IF 8.8 ) Pub Date : 2021-06-04 , DOI: 10.1016/j.chemosphere.2021.131108
Trung Hau Nguyen 1 , Sangmin Won 2 , Myung-Gyu Ha 3 , Dinh Duc Nguyen 4 , Ho Young Kang 2
Affiliation  

Owing to industrial evolution, a huge mass of toxic metals, including Co, Cu, Cr, Mn, Ni, Pb, and Zn, and metalloids, such as As and Sb, has inevitably been released into the natural environment and accumulated in soils or sediments. Along with modern industrialization, many mineral mines have been explored and exploited to provide materials for industries. Mining industries also generate a vast amount of waste, such as mine tailings, which contain a high concentration of toxic metals and metalloids. Due to the low economic status, a majority of mine tailings are simply disposed into the surrounding environments, without any treatment. The mobilization and migration of toxic metals and metalloids from soils, sediments, and mining wastes to water systems via natural weathering processes put both the ecological system and human health at high risk. Considering both economic and environmental aspects, bioleaching is a preferable option for removing the toxic metals and metalloids because of its low cost and environmental safety. This chapter reviews the recent approaches of bioleaching for removing toxic metals and metalloids from soils, sediments, and mining wastes. The comparison between bioleaching and chemical leaching of various waste sources is also discussed in terms of efficiency and environmental safety. Additionally, the advanced perspectives of bioleaching for environmental remediation with consideration of other influencing factors are reviewed for future studies and applications.



中文翻译:

用于有毒金属和准金属环境修复的生物浸出:土壤、沉积物和尾矿的综述

由于工业发展,大量有毒金属,包括钴、铜、铬、锰、镍、铅和锌,以及准金属,如砷和锑,不可避免地被释放到自然环境中并在土壤或土壤中积累。沉积物。随着现代工业化的发展,许多矿产被勘探开发,为工业提供原料。采矿业也会产生大量废物,例如尾矿,其中含有高浓度的有毒金属和类金属。由于经济地位低下,大部分尾矿只是简单地排放到周围环境中,没有进行任何处理。有毒金属和准金属通过自然风化过程从土壤、沉积物和采矿废物中迁移和迁移到水系统,使生态系统和人类健康处于高风险之中。考虑到经济和环境方面,生物浸出是去除有毒金属和准金属的优选选择,因为它成本低且环境安全。本章回顾了最近用于从土壤、沉积物和采矿废物中去除有毒金属和准金属的生物浸出方法。还讨论了各种废物来源的生物浸出和化学浸出之间的效率和环境安全性的比较。此外,还回顾了考虑其他影响因素的生物浸出环境修复的先进观点,以供未来的研究和应用。本章回顾了最近用于从土壤、沉积物和采矿废物中去除有毒金属和准金属的生物浸出方法。还讨论了各种废物来源的生物浸出和化学浸出之间的效率和环境安全性的比较。此外,还回顾了考虑其他影响因素的生物浸出环境修复的先进观点,以供未来的研究和应用。本章回顾了最近用于从土壤、沉积物和采矿废物中去除有毒金属和类金属的生物浸出方法。还讨论了各种废物来源的生物浸出和化学浸出之间的效率和环境安全性的比较。此外,还回顾了考虑其他影响因素的生物浸出环境修复的先进观点,以供未来的研究和应用。

更新日期:2021-06-10
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