Open AccessStudy on microbial remediation of heavy metal contaminated soil
Author(s) -
Qin Jiaming,
Jiang Biguang,
Nan Xiaolong,
Rui Xu,
Ying He,
GuoQing Jiang,
Qin Jinning,
Yongyi Yang,
Qian Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/687/1/012041
Subject(s) - environmental remediation , environmental chemistry , leaching (pedology) , arsenic , soil contamination , metal , soil remediation , microorganism , contamination , antimony , heavy metals , environmental science , bioleaching , acidithiobacillus thiooxidans , chemistry , acidithiobacillus ferrooxidans , soil water , soil science , geology , bacteria , inorganic chemistry , ecology , paleontology , organic chemistry , copper , biology
This paper studied the leaching effect of various strains on the heavy metal contaminated soil around the mining area of Dong’an County, Hunan Province. By measuring the form of heavy metals of antimony and arsenic in the soil and the concentration of heavy metals in the solution, the remediation effect of microorganisms in different pH conditions and different soil environments on the heavy metal contaminated soil was explored. The results showed that Acidithiobacillus thiooxidans ( A.c ) and Acidithiobacillus thiooxidans ( A.t ) had better leaching effect. Under the initial conditions of pH equal to 1, 10% bacteria content and 10 g/L S, the active metal components in the soil could be dissolved. The results showed that microorganism could remediate the soil contaminated with heavy metals and make the available metal components in the soil reach the safety standard.