Biodegradation of chlorpyrifos by Pseudomonas sp. in a continuous packed bed bioreactor

Yadav, Monika; Srivastva, Navnita; Singh, Ram Sharan; Upadhyay, S.N.; Dubey, Suresh Kumar

doi:10.1016/j.biortech.2014.01.098

Cited by 76 publications

(26 citation statements)

References 11 publications

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“…Biodegradation of chlorpyrifos by Pseudomonas sp. was investigated in batch as well as continuous bioreactors (Yadav et al 2014). Though chlorpyrifos removal efficiency of more than 91 % was observed up to 300 mg L -1 day -1 , accumulation of 3,5,6-trichloro-2-pyridinol and flow fluctuations were found to affect the reactor performance.…”

Section: Biodegradationmentioning

confidence: 96%

Chlorpyrifos: pollution and remediation

2015

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The widespread use of pesticides in modern agriculture is of increasing concern due to environmental contamination and subsequent biodiversity loss. Chlorpyrifos is a toxic organophosphate pesticide. Repeated applications of chlorpyrifos modify the soil microbial community structure and pose potential health risks to the other nontargets. Chlorpyrifos has been reported as the second most commonly detected pesticide in food and water. Extensive use of chlorpyrifos in agriculture and persistence in the environment have raised public concern and demand for safe technologies to overcome the pollution and toxicity problems. Here, we review pollution and toxicity issues associated with chlorpyrifos use and discuss strategies to solve pesticide contamination. Chlorpyrifos, previously shown to be resistant to enhanced degradation, has now been proved to undergo enhanced microbe-mediated decay. Here, special emphasis is given to degradation methods such as ozonation, Fenton treatment, photodegradation, and advanced oxidation processes along with microbial degradation. Finally, we focus on degradation process at enzyme and molecular levels which will enable us to elucidate the exact degradative pathway involved in biodegradation.

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Section: Biodegradationmentioning

confidence: 96%

Chlorpyrifos: pollution and remediation

2015

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“…The pseudomonas (Iso 1) sp. has degraded more than 90% for high initial concentration of CP (500 mg L -1 ) in bioreactors packed with polyurethane foam at pH 7.5 and temperature 37 o C. [75] The pseudomonas putida MB 285 cells degraded 95% of CP (50 mg L -1 ) is observed in 3 hrs only. A wide range of temperature and pH were investigated during degradation, temperature 25 o C and pH 3 was found to be optimum.…”

Section: Biodegradationmentioning

confidence: 99%

Toxicity, Natural and Induced Degradation of Chlorpyrifos

Sud

Kumar

Kaur³

et al. 2020

J. Chil. Chem. Soc.

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The increase in demand for agricultural products due to the growing population led to excessive inputs of pesticides in the agriculture field which resulted in contamination of the environmental segments of life i.e. air, water, and soil. Chlorpyrifos is one of the most extensively used broad-spectrum organophosphate insecticides. The usage and broad-spectrum applicability of chlorpyrifos lead to widespread contamination in the environment and serious damage to non-target organisms. Moreover, metabolites of chlorpyrifos i.e. chlorpyrifos-oxon and 3,5,6-trichloro-2-pyridinol are found to be more toxic than its parent compound. This review emphasizes on various toxic effects of chlorpyrifos and its metabolites on living organisms. The efforts put to develop the efficient methods for the degradation of the insecticide in soil and water i.e. photocatalytic, biodegradation, electrochemical and others have been discussed. Analytical techniques used for the study of degraded products and various intermediates formed during degradation under different conditions are summarized. It also includes the general pathway for the degradation of chlorpyrifos. The review will help in the development of tools for degradation and mineralization of organophosphate pesticides by knowing the mechanism of degradation and applicability of the developed process at a large scale.

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“…2020; 25 (1): 62-70 pISSN 1226-1025 https://doi.org/10.4491/eer.2018.416 eISSN 2005-968X of 4-CP. As the degradation potential of a biocatalyst may be assessed dependent on the kinetic parameters, knowledge of expansion along with biodegradation kinetics is essential meant for the forecasting of the sewage class and optimization of the reactor-functioning criteria to convene the release standards [14]. Most of the research studies have been focused on the isolation, screening, and characterization of microorganisms for the biodegradation of 4-CP.…”

Section: Introductionmentioning

confidence: 99%

A kinetic study of 4-chlorophenol biodegradation by the novel isolated Bacillus subtilis in batch shake flask

Sandhibigraha

Chakraborty

Bandyopadhyay

et al. 2019

Environmental Engineering Research

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Here in this work, a 4-chlorophenol (4-CP)-degrading bacterial strain Bacillus subtilis (B. subtilis) MF447840.1 was isolated from the drain outside the Hyundai car service center, Agartala, Tripura, India. 16S rDNA technique used carried out for genomic recognition of the bacterial species. Isolated bacterial strain was phylogenetically related with B. subtilis. This strain was capable of breaking down both phenol and 4-CP at the concentration of 1,000 mg/L. Also, the isolated strain can able to metabolize five diverse aromatic molecules such as 2-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 4-nitrophenol, and pentachlorophenol for their growth. An extensive investigation was performed to portray the kinetics of cell growth along with 4-CP degradation in the batch study utilizing 4-CP as substrate. Various unstructured models were applied to evaluate the intrinsic kinetic factors. Levenspiel's model demonstrates a comparatively enhanced R 2 value (0.997) amongst every analyzed model. The data of specific growth rate (μ), saturation constant (KS), and YX/S were 0.11 h -1 , 39.88 mg/L, along with 0.53 g/g, correspondingly. The isolated strain degrades 1,000 mg/L of 4-CP within 40 h. Therefore, B. subtilis MF447840.1 was considered a potential candidate for 4-CP degradation.

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Biodegradation of chlorpyrifos by Pseudomonas sp. in a continuous packed bed bioreactor

Cited by 76 publications

References 11 publications

Chlorpyrifos: pollution and remediation

Chlorpyrifos: pollution and remediation

Toxicity, Natural and Induced Degradation of Chlorpyrifos

A kinetic study of 4-chlorophenol biodegradation by the novel isolated Bacillus subtilis in batch shake flask

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