Biodegradation of tech-hexachlorocyclohexane in a upflow anaerobic sludge blanket (UASB) reactor

Bhat, Praveena; Kumar, M. Suresh; Mudliar, Sandeep N.; Chakrabarti, Tapan

doi:10.1016/j.biortech.2005.04.010

Cited by 17 publications

(1 citation statement)

References 10 publications

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“…Fabre et al 2005;Bhat et al 2006) focused on the parent compounds, whereas only a few publications deal with the breakdown products of HCH (Porcefall et al 1980;Ludwig et al 1992;Nagasawa et al 1993;Middeldorp et al 1996;RodriguezGarrido et al 2004;Barrida-Pereira et al 2005;Quintero et al 2005), mostly in biological samples or results from laboratory experiments.…”

Section: Introductionmentioning

confidence: 97%

HCH residues in point-source contaminated samples of the Teltow Canal in Berlin, Germany

Ricking

Schwarzbauer

2008

Environ Chem Lett

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Contaminated groundwater and a riverine sediment core heavily affected by the same industrial point source were analysed for hexachlorocyclohexanes (HCH) and its degradation products. A detailed quantification by GC/MS revealed contamination levels up to 730 lg/L and 396 ng/g in sum for the water and sediment samples, respectively. The isomer pattern differed significantly in both compartments. The ground water samples were depleted in c-HCH, whereas a significant loss of a-HCH was evident in the sediments as compared to the technical composition. The data obtained revealed interesting insights into the transformation behaviour and fate of HCH mixtures in anaerobic environmental compartments. In the affected groundwater system an ongoing microbial degradation was pointed out by the identification of indicative anaerobic metabolites. On the contrary in the sedimentary system a high environmental stability or rather a hindered degradation was observed as indicated by unaltered concentration levels as compared to production rates as well as by the absence of metabolites. Interestingly, the environmental fate of HCH in subaquatic sediments as well as in anaerobic ground water differs highly in contrast to the behaviour in anaerobic soil or surface water systems. Further on, it has to be stated, that the knowledge about the long-term behaviour of HCH residues in sedimentary material under anaerobic conditions is rather limited so far.

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Section: Introductionmentioning

confidence: 97%

HCH residues in point-source contaminated samples of the Teltow Canal in Berlin, Germany

Ricking

Schwarzbauer

2008

Environ Chem Lett

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Anaerobic Degradation of Lindane and Other HCH Isomers

Mehboob

Langenhoff

Schraa

et al. 2013

Management of Microbial Resources in the Environment

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Biodegradability of HCH in agricultural soils from Guadeloupe (French West Indies): identification of the lin genes involved in the HCH degradation pathway

Laquitaine

Durimel

Alencastro

et al. 2015

Environ Sci Pollut Res

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Banana has been a main agricultural product in the French West Indies (Guadeloupe and Martinique) since the 1960s. This crop requires the intensive use of pesticides to prevent attacks by insect pests. Chlorinated pesticides, such as hexachlorocyclohexane (HCH), chlordecone and dieldrin, were used until the beginning of the 1990s, resulting in a generalized diffuse contamination of the soil and water in the areas of banana production, hence the need to develop solutions for cleanup of the polluted sites. The aims of this work were (i) to assess lindane degradation in soil slurry microcosms treated with lindane at 10 mg/L and (ii) to detect the catabolic genes involved in the HCH degradation pathway. The soil slurry microcosm system showed a 40% lindane degradation efficiency at the end of a 30-day experiment. Lower lindane removal was also detected in the abiotic controls, probably caused by pesticide adsorption to soil particles. Indeed, the lindane concentration decreased from 6000 to 1330 ng/mL and from 800 to 340 ng/mL for the biotic and abiotic soils, respectively. Nevertheless, some of the genes involved in the HCH degradation pathway were amplified by polymerase chain reaction (PCR) from crude deoxyribonucleic acid (DNA) extracted from the Guadeloupe agricultural soil, suggesting that HCH degradation is probably mediated by bacteria closely related to the family Sphingomonadaceae.

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Biodegradation of tech-hexachlorocyclohexane in a upflow anaerobic sludge blanket (UASB) reactor

Cited by 17 publications

References 10 publications

HCH residues in point-source contaminated samples of the Teltow Canal in Berlin, Germany

HCH residues in point-source contaminated samples of the Teltow Canal in Berlin, Germany

Anaerobic Degradation of Lindane and Other HCH Isomers

Biodegradability of HCH in agricultural soils from Guadeloupe (French West Indies): identification of the lin genes involved in the HCH degradation pathway

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