Bioremediation of Antimony and Arsenic Co-contamination from Antimony Mining Area with Sulfate-reducing Bacteria

Juan Zhong, Juan Zhong, Juan Zhong, Juan Zhong, Xiaokui Che, Xiaokui Che, Xiaokui Che, Xinglan Cui, Xinglan Cui, Hongxia Li, Hongxia Li, Qidong Zhang, Qidong Zhang, Lei Wang, Lei Wang, Qi Zheng, Qi Zheng, Xuewu Hu, Xuewu Hu, Xuewu Hu

2022

Abstract

The contamination of antimony (Sb) and arsenic (As) in the soil of antimony mining area is the most common pollutant. Metal sulfide precipitation by sulfate-reducing bacteria (SRB) is considered to be a promising method. In this work, antimony and arsenic contaminated soil from an antimony mining area was treated by the application of a mixed culture of SRB. The soil samples initially contained the concentration of 17550 mg/kg Sb and 3231 mg/kg As, and the leaching concentration exceeds the groundwater IV standard. Changes of Eh, pH, aqueous Sb and as were monitored over 50 days in this experiment. The results indicated that SRB was able to increase the pH value and decrease the redox potential of the solution. When the SRB was growing well in the system, the high concentration of Sb in the solution was reduced from 7.8 mg/L to less than 0.5 mg/L. However, As showed a completely opposite trend to antimony. The presence of SRB can promote the release of as from contaminated soil, and the concentration of As will gradually decrease when the activity of SRB decreased. This work demonstrates that SRB can trigger the release of Sb, while as caused the opposite effect.

Paper Citation

in Harvard Style

Zhong J., Che X., Cui X., Li H., Zhang Q., Wang L., Zheng Q. and Hu X. (2022). Bioremediation of Antimony and Arsenic Co-contamination from Antimony Mining Area with Sulfate-reducing Bacteria. In Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB, ISBN 978-989-758-595-1, pages 1174-1178. DOI: 10.5220/0011381600003443

in Bibtex Style

@conference{icbeb22,
author={Juan Zhong and Xiaokui Che and Xinglan Cui and Hongxia Li and Qidong Zhang and Lei Wang and Qi Zheng and Xuewu Hu},
title={Bioremediation of Antimony and Arsenic Co-contamination from Antimony Mining Area with Sulfate-reducing Bacteria},
booktitle={Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,},
year={2022},
pages={1174-1178},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011381600003443},
isbn={978-989-758-595-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,
TI - Bioremediation of Antimony and Arsenic Co-contamination from Antimony Mining Area with Sulfate-reducing Bacteria
SN - 978-989-758-595-1
AU - Zhong J.
AU - Che X.
AU - Cui X.
AU - Li H.
AU - Zhang Q.
AU - Wang L.
AU - Zheng Q.
AU - Hu X.
PY - 2022
SP - 1174
EP - 1178
DO - 10.5220/0011381600003443