Phytoremediation of soil co-contaminated with Cd and BDE-209 using hyperaccumulator enhanced by AM fungi and surfactant

Hui LI, Xing LI, Lei XIANG, Hai-Ming ZHAO, Yan-Wen LI, Quan-Ying CAI, Li ZHU, Ce-Hui MO, Ming Hung WONG

Research output: Contribution to journalArticles

27 Citations (Scopus)

Abstract

Pot experiments were conducted to investigate the uptake and translocation of both Cd and decabromodiphenyl ether (BDE-209) in Solanum nigrum, under the treatments of two arbuscular mycorrhizal fungi [AMF, Funneliformis mosseae (FM) and Rhizophagus intraradices (RI)] and surfactant β-cyclodextrin (β-CD). Results showed that S. nigrum treated with either FM or β-CD significantly elevated shoot biomass and Cd concentrations and contents in shoots. The concentrations of BDE-209 in shoots and the dissipation and debromination efficiencies of BDE-209 in soil were significantly enhanced in S. nigrum treated with β-CD, inoculated with or without AMF. Moreover, significant positive correlations were found between the BDE-209 dissipation efficiency, the BDE-209 concentrations and contents in roots, and the soil enzymatic activities (polyphenol oxidase or dehydrogenase activities) and between the Cd and BDE-209 contents in shoots or roots. Higher concentrations of lower-brominated products and total PBDEs were detected in shoots than in roots suggesting that BDE-209 might be initially absorbed by roots, then translocated to shoots, and then degraded into lower brominated products in shoots. Considering the plant uptake of Cd and BDE-209 and the efficient removal of those chemicals in soils, the combination of S. nigrum and β-CD inoculated with or without AMF may be viable alternatives for phytoremediation of the co-contaminated soil. Copyright © 2017 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)447-455
JournalScience of the Total Environment
Volume613-614
Early online dateSep 2017
DOIs
Publication statusPublished - Feb 2018

Citation

Li, H., Li, X., Xiang, L., Zhao, H. M., Li, Y. W., Cai, Q. Y., et al. (2018). Phytoremediation of soil co-contaminated with Cd and BDE-209 using hyperaccumulator enhanced by AM fungi and surfactant. Science of The Total Environment, 613-614, 447-455.

Keywords

  • β-Cyclodextrin
  • Solanum nigrum
  • Arbuscular mycorrhizal fungi
  • Cadmium
  • Decabromodiphenyl ether

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