Preliminary study on biodegradation of phenanthrene by bacteria isolated from mangrove sediments in Hong Kong

Tam, N.F.Y.; Guo, Chao; Yau, Wai-Cheong; Wong, Yuk Shan

doi:10.1016/s0025-326x(02)00108-x

Cited by 111 publications

(53 citation statements)

References 21 publications

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“…This confirms several previous studies showing that mangroves have indigenous microorganisms capable of metabolizing hydrocarbons (Tam et al, 2002;Yu et al, 2005;Brito et al, 2006;Tam and Wong 2008;Lu et al, 2011;Moreira et al, 2011). In sterile sediment, the consortium used diesel as the sole source of carbon or energy.…”

Section: Biodegradation Of Diesel In Mangrove Sediment By Bacterial Csupporting

confidence: 90%

Characterization and Evaluation of the Potential of a Diesel-Degrading Bacterial Consortium Isolated from Fresh Mangrove Sediment

Lang

Destain

Delvigne

et al. 2016

Water Air Soil Pollut

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Hydrocarbons are ubiquitous and persistent organic pollutants in the environment. In wetlands and marine environments, particularly in mangrove ecosystems, their increase and significant accumulation result from human activities such as oil and gas exploration and exploitation operations. Remediation of these ecosystems requires the development of adequate and effective strategies. Natural attenuation, biostimulation, and bioaugmentation are all biological soil treatment techniques that can be adapted to mangroves. Our experiments were performed on samples of fresh mangrove sediments from the Cameroon estuary and mainly from the Wouri River in Cameroon. This study aims to assess the degradation potential of a bacterial consortium isolated from mangrove sediment. The principle of our bioremediation experiments is based on a series of tests designed to evaluate the potential of an active indigenous microflora and three exogenous pure strains, to degrade diesel with/without adding nutrients. The experiments were conducted in laboratory flasks and a greenhouse in microcosms. In one case, as in the other, the endogenous microflora showed that it was able to degrade diesel. Under stress of the pollutant, the endogenous microflora fits well enough in the middle to enable metabolism of the pollutant. However, the Rhodococcus strain was more effective over time. The degradation rate was 77 and 90 % in the vials containing the sterile sediments and non-sterile sediments, respectively. The results are comparable with those obtained in the microcosms in a greenhouse where only the endogenous microflora were used. The results of this study show that mangrove sediment contains an active microflora that can metabolize diesel. Indigenous and active microflora show an interesting potential for diesel degradation.

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Section: Biodegradation Of Diesel In Mangrove Sediment By Bacterial Csupporting

confidence: 90%

Characterization and Evaluation of the Potential of a Diesel-Degrading Bacterial Consortium Isolated from Fresh Mangrove Sediment

Lang

Destain

Delvigne

et al. 2016

Water Air Soil Pollut

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“…The biodegradation of PAHs by the bacterial consortium showed > 95 % degradation of low molecular weight PAHs. Tam et al (2002) studied phenanthrene degradation by bacterial consortium isolated from mangrove sediment. The bacterial consortium degraded phenanthrene up to 47 % at 20 g/Lof salin ity, but gr owth an d r ate of phenanthrene degradation was influenced by salinity.…”

Section: Description Of Va3 Strain (Stenotrophomonas Maltophilia)mentioning

confidence: 99%

Biodegradation of polycyclic aromatic hydrocarbon by a halotolerant bacterial consortium isolated from marine environment

Arulazhagan

Vasudevan

Yeom

2010

Int. J. Environ. Sci. Technol.

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ABSTRACT:The biodegradability of polycyclic aromatic hydrocarbons such as naphthalene, fluorene, anthracene and phenanthrene by a halotolerant bacterial consortium isolated from marine environment was investigated. The polycyclic aromatic hydrocarbons degrading bacterial consortium was enriched from mixture saline water samples collected from Chennai (Port of Chennai, salt pan), India. The consortium potently degraded polycyclic aromatic hydrocarbons (> 95%) at 30g/L of sodium chloride concentration in 4 days. The consortium was able to degrade 39 to 45% of different polycyclic hydrocarbons at 60 g/L NaCl concentration. Due to increase in salinity, the percent degradation decreased. To enhance polycyclic aromatic hydrocarbons degradation, yeast extract was added as an additional substrate at 60g/L NaCl concentration. After the addition of yeast extract, the consortium degraded > 74 % of polycyclic aromatic hydrocarbons at 60 g/L NaCl concentration in 4 days. The consortium was also able to degrade PAHs at different concentrations (5, 10, 20, 50 and 100 ppm) with 30 g/L of NaCl concentration. The polycyclic aromatic hydrocarbons degrading halotolerant bacterial consortium consists of three bacterial strains, namely Ochrobactrum sp., Enterobacter cloacae and Stenotrophomonas maltophilia.

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“…Microbial growth on 100 mg of phenanthrene/l had specific growth rate (l) of 0.135 h -1 (r 2 = 0.996) and doubling time (t d ) of 5.1 h. Table 3 summarizes the phenanthrene degradation time, percentages of phenanthrene degradation, PDR and l obtained from this study. For better comparison, the data reported in the literature (Romero et al 1998;Tam et al 2002;Tian et al 2002) are also listed in the table. It showed that, among the listed phenanthrene degraders, strain GY2B had the fastest degradation rate for the same initial phenanthrene concentration, higher percentage of phenanthrene degraded, and the greatest l-value, indicating that strain GY2B is a very efficient phenanthrene degrader.…”

Section: Phenanthrene Degradation Characterization By Strain Gy2bmentioning

confidence: 99%

Isolation of phenanthrene-degrading bacteria and characterization of phenanthrene metabolites

Tao

Dang

et al. 2006

World J Microbiol Biotechnol

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Three aerobic bacterial consortia GY2, GS3 and GM2 were enriched from polycyclic aromatic hydrocarbon-contaminated soils with water-silicone oil biphasic systems. An aerobic bacterial strain utilizing phenanthrene as the sole carbon and energy source was isolated from bacterial consortium GY2 and identified as Sphingomonas sp. strain GY2B. Within 48 h and at 30°C the strain metabolized 99.1% of phenanthrene (100 mg/l) added to batch culture in mineral salts medium and the cell number increased by about 40-fold. Three metabolites 1-hydroxy-2-naphthoic acid, 1-naphthol and salicylic acid, were identified by gas chromatographic mass spectrometry and UV-visible spectroscopy analysis. A degradation pathway was proposed based on the identified metabolites. In addition to phenanthrene, strain GY2B could use other aromatic compounds such as naphthalene, 2-naphthol, salicylic acid, catechol, phenol, benzene and toluene as a sole source of carbon and energy.

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Preliminary study on biodegradation of phenanthrene by bacteria isolated from mangrove sediments in Hong Kong

Cited by 111 publications

References 21 publications

Characterization and Evaluation of the Potential of a Diesel-Degrading Bacterial Consortium Isolated from Fresh Mangrove Sediment

Characterization and Evaluation of the Potential of a Diesel-Degrading Bacterial Consortium Isolated from Fresh Mangrove Sediment

Biodegradation of polycyclic aromatic hydrocarbon by a halotolerant bacterial consortium isolated from marine environment

Isolation of phenanthrene-degrading bacteria and characterization of phenanthrene metabolites

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