STABILIZATION OF ARSENIC IN CONTAMINATED SOILS USING BIOLOGICAL Mn OXIDE (Bio-MnO<sub><i>x</i></sub>)

WANG Hua-wei; WU Ya-jing; XU Rong; SUN Ying-jie; LI Shu-peng; WANG Ya-nan; ZHONG Chen-yu; SHI Chang-fei

doi:10.13205/j.hjgc.202109029

Volume 39 Issue 9

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(9): 205-210,216

WANG Hua-wei, WU Ya-jing, XU Rong, SUN Ying-jie, LI Shu-peng, WANG Ya-nan, ZHONG Chen-yu, SHI Chang-fei. STABILIZATION OF ARSENIC IN CONTAMINATED SOILS USING BIOLOGICAL Mn OXIDE (Bio-MnOx)[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 205-210,216. doi: 10.13205/j.hjgc.202109029

Citation:

WANG Hua-wei, WU Ya-jing, XU Rong, SUN Ying-jie, LI Shu-peng, WANG Ya-nan, ZHONG Chen-yu, SHI Chang-fei. STABILIZATION OF ARSENIC IN CONTAMINATED SOILS USING BIOLOGICAL Mn OXIDE (Bio-MnO_x)[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 205-210,216. doi: 10.13205/j.hjgc.202109029

Citation:

WANG Hua-wei, WU Ya-jing, XU Rong, SUN Ying-jie, LI Shu-peng, WANG Ya-nan, ZHONG Chen-yu, SHI Chang-fei. STABILIZATION OF ARSENIC IN CONTAMINATED SOILS USING BIOLOGICAL Mn OXIDE (Bio-MnO_x)[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 205-210,216. doi: 10.13205/j.hjgc.202109029

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STABILIZATION OF ARSENIC IN CONTAMINATED SOILS USING BIOLOGICAL Mn OXIDE (Bio-MnO_x)

doi: 10.13205/j.hjgc.202109029

1. Qingdao Solid Waste Pollution Control and Resource Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China;
2. National Engineering Laboratory for Site Remediation Technologies, Beijing Construction Engineering Group Environmental Remediation Co., Ltd, Beijing 100015, China

Received Date: 2020-11-13
Available Online: 2022-01-21

Abstract

Abstract

Through indoor simulation experiments, the effect of biosynthetic manganese oxide (Bio-MnO_x) material on the stabilization of arsenic (As) in contaminated soil was studied. The results showed that:1) the addition of Bio-MnO_x could effectively decrease the leaching amount of As, in which the water-soluble As content decreased from 2.28 mg/kg to 0.86 mg/kg, with a reduction efficiency of 62.3%; 2) the five-step continuous extraction results showed that the content of water-soluble As and surface-adsorbed fraction decreased significantly after Bio-MnO_x treatment; 3) the environmental risk analysis further confirmed that the risk of As decreased significantly after Bio-MnO_x treatment; 4) bacterial biodiversity analysis based on 16s RNA indicated that the richness of soil microbial diversity increased significantly after Bio-MnO_x treatment; 5) the analysis of microbial community structure showed that the dominant bacterial community structure changed from Bacillus to Clostridium, Comamonas, and Clostridium sensu tricto at the genus level. In general, Bio-MnO_x could be used as an effective biogenic material to stabilize As in soils.
- Biological Mn oxide (Bio-MnO_x),
- arsenic,
- contaminated soil,
- stabilization

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References(28)

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