SIMULATION EXPERIMENT OF TRANSPORT AND TRANSFORMATION OF WATER-SOLUBLE Cr(Ⅵ) IN SOIL UNDER THE ACTION OF MICROORGANISM

WANG Wen-xuan; CHEN Xiao-tong; ZHANG Yu-chen; WU Guang-yi; LIAO Yu-liang; YANG Jin-yan

doi:10.13205/j.hjgc.202006007

Volume 38 Issue 6

Aug. 2020

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WANG Wen-xuan, CHEN Xiao-tong, ZHANG Yu-chen, WU Guang-yi, LIAO Yu-liang, YANG Jin-yan. SIMULATION EXPERIMENT OF TRANSPORT AND TRANSFORMATION OF WATER-SOLUBLE Cr(Ⅵ) IN SOIL UNDER THE ACTION OF MICROORGANISM[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 40-46. doi: 10.13205/j.hjgc.202006007

Citation:

WANG Wen-xuan, CHEN Xiao-tong, ZHANG Yu-chen, WU Guang-yi, LIAO Yu-liang, YANG Jin-yan. SIMULATION EXPERIMENT OF TRANSPORT AND TRANSFORMATION OF WATER-SOLUBLE Cr(Ⅵ) IN SOIL UNDER THE ACTION OF MICROORGANISM[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 40-46. doi: 10.13205/j.hjgc.202006007

Citation:

WANG Wen-xuan, CHEN Xiao-tong, ZHANG Yu-chen, WU Guang-yi, LIAO Yu-liang, YANG Jin-yan. SIMULATION EXPERIMENT OF TRANSPORT AND TRANSFORMATION OF WATER-SOLUBLE Cr(Ⅵ) IN SOIL UNDER THE ACTION OF MICROORGANISM[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 40-46. doi: 10.13205/j.hjgc.202006007

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SIMULATION EXPERIMENT OF TRANSPORT AND TRANSFORMATION OF WATER-SOLUBLE Cr(Ⅵ) IN SOIL UNDER THE ACTION OF MICROORGANISM

doi: 10.13205/j.hjgc.202006007

College of Architecture and Environment, Sichuan University, Chengdu 610227, China

Received Date: 2020-03-21

Abstract

Abstract

The development of modern industry caused Cr(Ⅵ) soil pollution increasingly prominent. The researches on the prevention and control of soil pollution with Cr(Ⅵ) attracted more and more attention. This study selected the low-risk plot soil as the experiment material. Based on soil column leaching experiments, the migration and transformation of water-soluble Cr(Ⅵ) in the soil under the action of mixed Bacillus were investigated. The results showed that the water-soluble Cr(Ⅵ) migration in soil was motivated by the migration of water in soil. In the control group, the migration of water-soluble Cr(Ⅵ) in the soil showed a trend of decreasing concentration with increasing soil depth; in the mixed Bacillus treatment group, Bacillus hindered water-soluble Cr(Ⅵ) migration in the early stage(0~10 days), but had little effect in the middle and later stage(10~30 days). During the migration process, the effect of mixing Bacillus made soil water soluble Cr(Ⅵ) concentration reduced. For example, after 30 days of soil column leaching, the water-soluble Cr(Ⅵ) concentration of the 175-H soil column compared with the 175-D soil column at the depths of 5, 10, 15, 20 cm were decreased by 3.55, 2.03, 1.87, 1.31 mg/kg. At the same time, the leaching of Cr(Ⅵ)-containing solution increased the relative abundance of chromium-resistant bacteria in the soil, such as Bacillus.
- soil,
- water-soluble hexavalent chromium,
- mixed Bacillus Cohn,
- migration,
- transformation

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References(36)

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