Cited by 72Heavy metals in environmentMicrobial bioremediation and biosurfactantsPesticide and Herbicide Environmental Studies

Bioremediation of Cd-DDT co-contaminated soil using the Cd-hyperaccumulator Sedum alfredii and DDT-degrading microbes

Zhu, Zhi-qiang, Yang, Xiao-e, Wang, Kai, Huang, Hua-gang, Zhang, Xincheng, Fang, Hua, Li, Ting-qiang, Alva, A.K. +1 more·2012·Journal of Hazardous Materials

Abstract

The development of an integrated strategy for the remediation of soil co-contaminated by heavy metals and persistent organic pollutants is a major research priority for the decontamination of soil slated for use in agricultural production. The objective of this study was to develop a bioremediation strategy for fields co-contaminated with cadmium (Cd), dichlorodiphenyltrichloroethane (DDT), and its metabolites 1, 1-dichloro-2, 2-bis (4-chlorophenyl) ethylene (DDE) and 1, 1-dichloro-2, 2-bis (4-chlorophenyl) ethane (DDD) (DDT, DDE, and DDD are collectively called DDs) using an identified Cd-hyperaccumulator plant Sedum alfredii (SA) and DDT-degrading microbes (DDT-1). Initially, inoculation with DDT-1 was shown to increase SA root biomass in a pot experiment. When SA was applied together with DDT-1, the levels of Cd and DDs in the co-contaminated soil decreased by 32.1-40.3% and 33.9-37.6%, respectively, in a pot experiment over 18 months compared to 3.25% and 3.76% decreases in soil Cd and DDs, respectively, in unplanted, untreated controls. A subsequent field study (18-month duration) in which the levels of Cd and DDs decreased by 31.1% and 53.6%, respectively, confirmed the beneficial results of this approach. This study demonstrates that the integrated bioremediation strategy is effective for the remediation of Cd-DDs co-contaminated soils.

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Crossref · 10.1016/j.jhazmat.2012.07.033

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Authors
Zhu, Z.-Q., Yang, X.-E., Wang, K., Huang, H.-G., Zhang, X., Fang, H., Li, T.-Q., Alva, A. K., & He, Z.-L.
Affiliations
  • Zhejiang University (CN)
  • Agricultural Research Service (US)
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2012-10
Volume
235-236
Pages
144-151
ISSN
0304-3894 (ISSN-L)
OpenAlex
W2130364014
Cited by
72
References
56
Citations by year
2025: 3 · 2024: 7 · 2023: 4 · 2022: 4 · 2021: 6 · 2020: 8 · 2019: 6 · 2018: 10 · 2017: 11 · 2016: 3 · 2015: 6 · 2014: 1 · 2013: 3
FWCI
2.63
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National High-tech Research and Development Program (2009AA06Z316)
  • Ministry of Education of the People's Republic of China (310003)
  • Ministry of Environmental Protection (2011467057)
Topics
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Environmental Science › Pollution › Microbial bioremediation and biosurfactants
  • Physical Sciences › Environmental Science › Pollution › Pesticide and Herbicide Environmental Studies
Keywords
cadmium, DDT, DDT metabolites, DDE, DDD, soil co-contamination, bioremediation, Sedum alfredii, cadmium hyperaccumulator, phytoextraction, root biomass, persistent organic pollutants, heavy metal-contaminated soil
MeSH terms
Biodegradation, Environmental, Cadmium, DDT, Pseudomonas, Soil Pollutants, Sedum

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