Isolation of PAH-degrading bacteria from mangrove sediments and their biodegradation potential

Guo, Chao; Zhou, Hongwei; Wong, Yuk Shan; Tam, N.F.Y.

doi:10.1016/j.marpolbul.2005.02.012

Cited by 113 publications

(57 citation statements)

References 32 publications

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“…Reaction systems reached the maximal oxidation rate at 48 hr; however, there was no significant difference between 48 and 24 hr, suggesting that an incubation term of 24 hr was adequate for benzo[a]pyrene oxidation. To our knowledge, this is much faster than conventional biodegradation using bacteria or fungi, which usually required several weeks, 21,22) suggesting the rapidity advantage of enzymatic remediation.…”

Section: Effect Of Incubation Time On Enzymatic Catalysismentioning

confidence: 99%

Optimization of Laccase-mediated Benzo[a]pyrene Oxidation and the Bioremedial Application in Aged Polycyclic Aromatic Hydrocarbons-contaminated Soil

Lin

Yin

et al. 2010

JOURNAL OF HEALTH SCIENCE

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Laccase is a polyphenol oxidase with the ability to oxidize a broad range of persistent organic pollutants, including benzo[a]pyrene, the most carcinogenic, mutagenic and teratogenic polycyclic aromatic hydrocarbons (PAHs). In this study, the reaction conditions for benzo [a]pyrene oxidation by laccase from Trametes versicolor were optimized in a liquid medium by a series of single factor experiments. The maximal benzo[a]pyrene oxidation rate was observed at 40• C, pH 4, 10% of acetonitrile and an incubation time of more than 24 hr, and the benzo[a]pyrene oxidation was enhanced significantly by the addition of a mediator, 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonicacid) (ABTS). Laccase was also applied to aged PAHs polluted soil to examine the efficiency of enzymatic bioremediation. The results showed that the enzyme was still effective in the degradation of anthracene, benzo[a]pyrene and benzo [a]anthracene in soil. Moreover, the degradation rate of most PAHs increased by the addition of ABTS. Our results indicated that the bioremediation of PAHs contaminated soil using laccase is feasible but a suboptimal pH might be a limiting factor in the enzymatic treatment of soil.

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Section: Effect Of Incubation Time On Enzymatic Catalysismentioning

confidence: 99%

Optimization of Laccase-mediated Benzo[a]pyrene Oxidation and the Bioremedial Application in Aged Polycyclic Aromatic Hydrocarbons-contaminated Soil

Lin

Yin

et al. 2010

JOURNAL OF HEALTH SCIENCE

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“…A study of the available literature, typically reveals large variations in total PAH concentrations even for surficial mangrove sediment samples taken from the same locations (Table 6), e.g. Ho Chung: 189-329 µg/kg (Guo et al 2005) cf. 1273-11098 µg/kg (Tam et al 2001) and similarly for Mai Po: 212-1042 µg/kg (Zheng et al 2000) cf.…”

mentioning

confidence: 99%

Organic and metal contamination in surface mangrove sediments of South China

Vane

Harrison

Kim

et al. 2009

Marine Pollution Bulletin

129

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“…The aerobic degradation of PAH in mangrove sediments has been extensively documented Guo et al 2005;Yu et al 2005), but little is known about the factors that affect the anaerobic degradation of PAH in mangrove sediment. The purpose of this study was to compare the anaerobic degradation of two PAHs in mangrove sediment from five sampling sites, investigate the effects of various factors on the anaerobic degradation of PAH in mangrove sediment, and isolate PAH-degrading bacteria from the sediment.…”

mentioning

confidence: 99%

Anaerobic Degradation of Phenanthrene and Pyrene in Mangrove Sediment

Chang

Yuan

2008

Bull Environ Contam Toxicol

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This study investigated the anaerobic degradation of the polycyclic aromatic hydrocarbons (PAHs) phenanthrene and pyrene in mangrove sediment from Taiwan. The anaerobic degradation of PAH was enhanced by the addition of acetate, lactate, pyruvate, sodium chloride, cellulose, or zero-valent iron. However, it was inhibited by the addition of humic acid, di-(2-ethylhexyl) phthalate (DEHP), nonylphenol, or heavy metals. Of the microorganism strains isolated from the sediment samples, we found that strain MSA3 (Clostridium pascui), expressed the best ability to biodegrade PAH. The inoculation of sediment with the strain MSA3 could enhance PAH degradation.

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Isolation of PAH-degrading bacteria from mangrove sediments and their biodegradation potential

Cited by 113 publications

References 32 publications

Optimization of Laccase-mediated Benzo[a]pyrene Oxidation and the Bioremedial Application in Aged Polycyclic Aromatic Hydrocarbons-contaminated Soil

Optimization of Laccase-mediated Benzo[a]pyrene Oxidation and the Bioremedial Application in Aged Polycyclic Aromatic Hydrocarbons-contaminated Soil

Organic and metal contamination in surface mangrove sediments of South China

Anaerobic Degradation of Phenanthrene and Pyrene in Mangrove Sediment

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