Interactively interfacial reaction of iron-reducing bacterium and goethite for reductive dechlorination of chlorinated organic compounds

Li, Xiaomin; Li, YongTao; Li, Fangbai; Zhou, Shungui; Feng, Chunhua

doi:10.1007/s11434-009-0475-x

Cited by 16 publications

(6 citation statements)

References 15 publications

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“…In the later period of incubation, with the consumption of nutrient materials and electrons by numerous anaerobic microbes and various reductive reactions in the reaction systems, the limited nutrient sources and electron donors led to microbial DDT dechlorination rates decreasing after 8 d for the goethite treatment. The results indicated that the Fe(III) oxide can accelerate reductive dechlorination efficiently under anaerobic conditions, which agrees with the findings by Li et al (2009) and Wei and Finneran (2011). Although the Fe(III) reduction will complete with reductive dechlorination for the direct electrons of H 2 , the Fe(II) produced from Fe(III) reduction can supply electrons for reductive dechlorination, and the numerous Fe-reducing bacteria stimulated by Fe oxide can participate in reductive dechlorination.…”

Section: Effect Of Fe Oxide Application On Ddt Dechlorination Under Asupporting

confidence: 87%

“…Similarly, a synergetic interaction on accelerating DDT dechlorination between propionic acid and goethite was obtained primarily because, throughout the incubation, the supplied lactic acid or propionic acid served as a nutrient source, stimulating Fe‐reducing bacteria and accelerating the reduction of soil Fe(III) and the added goethite to produce more Fe(II) (Table 2), which was an efficient electron donor for the reductive dechlorination of DDT (Li et al, 2010; Cao et al, 2012). Under anaerobic conditions, Fe(II) species were mainly generated by microbial reduction of Fe(III) (Li et al, 2009). Reports in the literature show that nutrient substances such as VFAs could stimulate Fe‐reducing bacteria to accelerate Fe(III) reduction (Lovley and Coates, 2000; Methé et al, 2003), and the Fe‐reducing bacteria may select specific substrates as their nutrient sources (Schnell and Ratering, 1998).…”

Section: Discussionmentioning

confidence: 99%

“…For instance, Shewanella putrefaciens 200 can participate in the reductive dechlorination of carbon tetrachloride (Picardal et al, 1995), Desulfuromonas michiganensis sp. nov. can participate in the reductive dechlorination of tetrachloroethylene (Sung et al, 2003), Comamonas koreensis CY01 can participate in the reductive dechlorination of 2,4‐D (Wu et al, 2010), and Shewanella decolorationis S12 is involved in the reductive dechlorination of DDT and pentachlorophenol, and the application of Fe(III) oxide enhanced their dechlorination rates (Li et al, 2009, 2010). In the later period of incubation, with the consumption of nutrient materials and electrons by numerous anaerobic microbes and various reductive reactions in the reaction systems, the limited nutrient sources and electron donors led to microbial DDT dechlorination rates decreasing after 8 d for the goethite treatment.…”

Section: Discussionmentioning

confidence: 99%

“…Under anaerobic conditions, Fe(III) reduction will complete for electrons with reductive dechlorination due to the low threshold H 2 concentrations for both of these reductive reactions (Lovley et al, 1996; Löffler et al, 1999; Zaa et al, 2010). Nevertheless, many reports have shown that Fe(III) oxide can accelerate reductive dechlorination of chlorinated organic compounds under anaerobic conditions due to the production of Fe(II), an efficient electron donor for reductive dechlorination, during Fe(III) reduction (Li et al, 2009, 2010; Wei and Finneran, 2011). Therefore, it is essential to elucidate the influence of Fe oxides in Hydragric Acrisols with prevalent anaerobic conditions on the reductive dechlorination of DDT.…”

mentioning

confidence: 99%

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Electron Donor Substances and Iron Oxides Stimulate Anaerobic Dechlorination of DDT in a Slurry System with Hydragric Acrisols

Liu

Cade-Menun

et al. 2016

J. Environ. Qual.

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The interactive effects between electron donor substances and iron (Fe) oxides have significant influence on electron transfer and the growth of Fe-reducing bacteria, which may affect the reductive dechlorination of 1,1,1-trichoro-2,2-bis(p-chlorophenyl)ethane (DDT) in soils. To evaluate the roles of volatile fatty acids and Fe(III) oxide in accelerating the reductive dechlorination of DDT in Hydragric Acrisols, a batch anaerobic incubation experiment was conducted in a slurry system with the following seven treatments: sterile soil, control (DDT-contaminated soil), lactic acid, propionic acid, goethite, lactic acid + goethite, and propionic acid + goethite. Results showed that after 20 d of incubation, DDT residues for these treatments decreased by 34, 65, 77, 81, 77, 90, and 92% of the initial quantities, respectively, with 1,1-dichloro-2,2-bis(4-chlorophenyl)-ethane as the dominant metabolite. The application of lactic acid had no significant effect on DDT dechlorination in the first 8 d while the methanogenesis rate increased quickly but accelerated DDT dechlorination after Day 8 while the methanogenesis rate decreased and Fe(II) contents increased. The application of propionic acid enhanced DDT dechlorination rates throughout the incubation. The amendment by goethite stimulated microbial reduction of Fe(III) oxides to generate Fe(II), which was an efficient electron donor, thus accelerating DDT dechlorination significantly in the early incubation period. A synergetic interaction that accelerated DDT dechlorination, either between lactic acid and goethite or between propionic acid and goethite, was obtained. The results will be of great significance to develop efficient in situ remediation technology of DDT-contaminated soil.

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Section: Effect Of Fe Oxide Application On Ddt Dechlorination Under Asupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Electron Donor Substances and Iron Oxides Stimulate Anaerobic Dechlorination of DDT in a Slurry System with Hydragric Acrisols

Liu

Cade-Menun

et al. 2016

J. Environ. Qual.

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“…3), although not as low as Fe°/FeII. The coupling of this FeIII/FeII cycling to the dechlorination of chlorinated compounds has been demonstrated at lab scale (Li et al 2008(Li et al , 2009) and could work for the CLD/5b-hydroCLD redox couple. CLD/5b-hydroCLD has indeed a redox potential of +414 mV (Dolfing et al 2012), which indicates that it can act as an electron acceptor for the 'iron oxide'/FeII couples, this part of the process being merely abiotic (Fig.…”

Section: Potential Formation Of 5b-hydrocld By Cld Dechlorinationmentioning

confidence: 99%

Natural transformation of chlordecone into 5b-hydrochlordecone in French West Indies soils: statistical evidence for investigating long-term persistence of organic pollutants

Devault

Laplanche

Pascaline³

et al. 2015

Environ Sci Pollut Res

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 15973 Abstract Chlordecone (CLD) was an organochlorine insecticide whose previous use resulted in an extensive pollution of the environment with severe health effects and social consequences. A closely related compound, 5b-hydrochlordecone (5b-hydroCLD), has been searched for and often detected in environmental matrices from the geographical area where CLD was applied. The current consensus considered that its presence was not the result of a biotic or abiotic dechlorination of CLD in these matrices but rather the consequence of its presence as impurity (synthesis by-product) in the CLD released into the environment. The aim of the present study was to determine if and to what extent degradation of CLD into 5b-hydroCLD occurred in the field. To test this hypothesis, the ratios of 5b-hydroCLD and CLD concentrations in a dataset of 810 soils collected between 2006 and 2012 in Martinique were compared to the ratios measured in 3 samples of the CLD dust commercial formulations applied in the banana fields of French West Indies (FWI) and 1 sample of the technical-grade CLD corresponding to the active ingredient used in such formulations. Soil data were processed with a hierarchical Bayesian model to account for random measurement errors and data censoring. Any pathway of CLD transformation into 5b-hydroCLD occurring over the long term in FWI soils would indeed change the ratio of 5b-hydroCLD/ CLD compared to what it was in the initially applied formulations. Results showed a significant increase of the 5b-hydroCLD/CLD ratio in the soils-25 times greater in soil than in commercial formulations-which suggested that natural CLD transformation into 5b-hydroCLD over the long term occurred in these soils. Results from this study may impact future decisions for the remediation of the polluted areas.

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Pentachlorophenol dissipation and ferrous iron accumulation in flooded paddy soils with contrasting organic matter contents and incorporation of legume green manures

Liu¹,

Wang²,

Zhu³

et al. 2018

J Soils Sediments

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Interactively interfacial reaction of iron-reducing bacterium and goethite for reductive dechlorination of chlorinated organic compounds

Cited by 16 publications

References 15 publications

Electron Donor Substances and Iron Oxides Stimulate Anaerobic Dechlorination of DDT in a Slurry System with Hydragric Acrisols

Electron Donor Substances and Iron Oxides Stimulate Anaerobic Dechlorination of DDT in a Slurry System with Hydragric Acrisols

Natural transformation of chlordecone into 5b-hydrochlordecone in French West Indies soils: statistical evidence for investigating long-term persistence of organic pollutants

Pentachlorophenol dissipation and ferrous iron accumulation in flooded paddy soils with contrasting organic matter contents and incorporation of legume green manures

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