Biochelator Assisted Phytoremediation for Cadmium (Cd) Pollution in Paddy Field

Yangyang Wang, Shaofeng Li, Xiaoshu Wang, Jianfeng Xu, Tongtong Li, Jia Zhu, Ruyue Yang, Jinsheng Wang, Ming Chang and Lei Wang
Additional contact information
Yangyang Wang: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
Shaofeng Li: Department of Building Environmental Engineering, Shenzhen Polytechnic Institute, Shenzhen 518055, China
Xiaoshu Wang: Department of Building Environmental Engineering, Shenzhen Polytechnic Institute, Shenzhen 518055, China
Jianfeng Xu: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
Tongtong Li: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
Jia Zhu: Department of Building Environmental Engineering, Shenzhen Polytechnic Institute, Shenzhen 518055, China
Ruyue Yang: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
Jinsheng Wang: Shenzhen BeiYu Environmental Technology Co., Ltd., Shenzhen 518063, China
Ming Chang: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
Lei Wang: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China

Sustainability, 2021, vol. 13, issue 21, 1-12

Abstract: To evaluate the efficacy of biochelators for phytoremediation of cadmium (Cd), effects of biochelators (humic acid, HA; polyaspartic acid, PASP; rhamnolipid, RLs) and synthetic chelator (sodium tripolyphosphate, STPP) on the growth, accumulation, and antioxidant index of Cd were investigated in Iris sibirica L. The results indicated that the addition of HA increased the dry weight of leaves and stems, and the addition of PASP, RLs, and STPP increased the growth of leaves but inhibited the growth of stems. The determination of Cd accumulation indicated that HA decreased the content of Cd in all tissues, while the addition of PASP, RLs, and STPP increased the accumulation of Cd in stems and roots. In addition, the determination of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) activities indicated that the treatment of PASP and RLs increased the activities of antioxidant enzymes, which might be beneficial to the resistance of Cd for Iris sibirica L. Overall, these results indicated that biochelators may improve the phytoremediation efficacy of Iris sibirica L. on Cd polluted paddy field. Among the tested chelators, PASP exhibited the best comprehensive efficacy and the highest commercial potential.

Keywords: cadmium; paddy field; phytoremediation; biochelator; Iris sibirica L. (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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