Bioremediation of DDT-Contaminated Soils: A Review

Foght, Julia M.; April, T M; Biggar, Kevin W.; Aislabie, Jackie

doi:10.1080/20018891079302

Cited by 141 publications

(89 citation statements)

References 61 publications

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“…Many studies in literature indicate that various microorganisms isolated from contaminated soil, and waste water exhibit limited ability to transform DDT into partially chlorinated intermediates like DDD, and DDE, which are much more recalcitrant [7][8][9][10]. The main contributing factor to the toxicity of DDTr is the presence of chlorine atoms that resist biological degradative reactions [11].…”

Section: Introductionmentioning

confidence: 99%

Studies on dechlorination of DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) using magnesium/palladium bimetallic system

Gautam

Suresh

2007

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Studies on dechlorination of DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) using magnesium/palladium bimetallic system

Gautam

Suresh

2007

Journal of Hazardous Materials

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“…Thus both isolates potentially harbor the two enzyme needed for both the aerobic and anaerobic degradation of 4,4 DDT. Consequently both 4,4 DDE and 4,4 DDD can be further degraded to metabolites for the metacleavage pathway through formation of DDMU [1,9]. …”

Section: Metabolites Of 44 Ddt Degradationmentioning

confidence: 99%

“…Therefore there is a growing interest in the bioapplication of microorganisms from the gut of earthworms on the bio-transformation of persistent and toxic pollutants during vermifiltration. Using microorganisms to biodegrade toxic and persistent compounds in the environment is now widely recognized as an emerging effective, economic [1] and environmentally sustainable technology [2]. Polychlorinated hydrocarbons such as DDT are mutagenic and toxic to humans and animals.…”

Section: Introductionmentioning

confidence: 99%

“…DDT and its residues (DDD (1,1-dichloro-2,2-bis-(4-chlorophenyl)ethane, DDE (1,1-dichloro-2,2-bis-(4-chlorophenyl) ethylene) and DDA (bis(4-chlorophenyl)-acetic acid) are persistent in the environment [7,8]. DDT has been used since the 1940s for control of agricultural pests although it is now mainly used for mosquito control in some developing countries including Zimbabwe due to its high excito-repellency factor and low cost [1,9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Microbial degradation as a method of targeting environmental DDT residues is gaining popularity due to the low degradability of DDT and its residues under in-situ conditions [8,18]. Microbes with DDT-degrading ability have been isolated from soil [8,19,20,21], mouse intestine, rat faeces, activated sludge, raw sewage, sewage sludge and genetically engineered microbes [1,7]. This study was aimed at screening, isolating and identifying bacteria in the earthworm gut capable of degrading 4,4 DDT, for application in bioreactor design for wastewater treatment systems.…”

Section: Introductionmentioning

confidence: 99%

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Isolation and molecular characterization of bacteria from the gut of Eisenia fetida for biodegradation of 4,4 DDT

2016

J App Biol Biotech

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There is a growing interest in the bio-application of microorganisms from the gut of earthworms on the biotransformation of persistent and toxic pollutants during vermifiltration. Earthworms harbor beneficial microbes in their gut which symbiotically aid in biodegradation of pollutants in their drilosphere. Dichlorodiphenyltrichloroethane (DDT) is an example of polychlorinated hydrocarbons and metabolites thereof that are persistent in the environment and are toxic to humans and animals. This study aimed at isolating and identifying 4,4 DDT degrading microorganisms in the gut of Eisenia fetida acclimatized to sewage. Five pure isolates obtained from gut contents were cultured in MSM supplemented with 15 mgL -1 DDT followed by glucose yeast extract agar sprayed with 1% 4,4 DDT in ether (v/v). Two pure isolates positive for 4,4 DDT biodegradation were inoculated on MSM containing 15 mgL-1 4,4 DDT. The resulting metabolites were identified using Gas Chromatography. The positive isolates were identified using 16S rRNA gene analysis as belonging to the Rhodococcus genus and the Bacillus genus, exhibiting 88.36% and 85.22% 4.4 DDT degradation respectively. The study demonstrated DDT-degradation by bacteria from the gut of E. fetida. These findings can be useful in optimization of vermifilters for biodegradation of DDT and other xenobiotics.

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Application of Microorganisms in Bioremediation

Thakkar¹,

Vincent²

2021

Bioprospecting of Microorganism‐Based Industrial Molecules

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Bioremediation of DDT-Contaminated Soils: A Review

Cited by 141 publications

References 61 publications

Studies on dechlorination of DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) using magnesium/palladium bimetallic system

Studies on dechlorination of DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) using magnesium/palladium bimetallic system

Isolation and molecular characterization of bacteria from the gut of Eisenia fetida for biodegradation of 4,4 DDT

Application of Microorganisms in Bioremediation

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