Phytoremediation of Cd- and Pb-contaminated soil with biodegradable chelants by Brassica Juncea

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Gao, Lidi^1 ; Zhang, Jinghua^1 ; Zhang, Shuai^1 ; Liu, Mengxue^1

College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China^1

关键词: Beta-cyclodextrin;    Brassica juncea;    Environmental control system;    Pb-contaminated soil;    Phytoremediation;    Polyaspartic acid;    Sophorolipids;    Whole plants;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012145/pdf
DOI  :  10.1088/1755-1315/218/1/012145

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Effect of the biodegradable chelants (Sophorolipid, Saponin, β-cyclodextrin and Polyaspartic acid) on phytoremediation of Cd-and Pb-contaminated soil by Brassica Juncea was investigated in this work. Especially, the effect of the kind and the adding dosage of the chelants was studied during the plant growth. Plants were grown in an environmental control system. The biomass of the whole plant was weighed, and the concentration of Cd and Pb in shoot and root were determined using ICP-MS. Consequently, the following matters have been obtained: (1) All the chelants had the excellent stabilization of Cd and Pb in root. (2)The chelants resulted in a sharply biomass loss. (3) From bioconcenrtration factor, the chelants were more beneficial for the translocation of Pb than Cd, especially Saponin.