Biodegradation of naphthalene in the oil refinery wastewater by enriched activated sludge

Chang, Yu‐Wei; Cheng, Huiling; Lai, S. P.; He, Ning

doi:10.1016/j.ibiod.2013.09.018

Cited by 26 publications

(8 citation statements)

References 27 publications

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“…Naphthalene degradation rates were higher than those of benzene, which agrees with previous study showing that naphthalene has a higher biodegradation rate than other major hydrocarbons (Li and Goel, 2011 ). However, both rates are somewhat lower than previously measured rates in other oil-contaminated natural environments (Alvarez et al, 1991 ; Eriksson et al, 1999 ; Nicholson and Fathepure, 2005 ; Chang et al, 2014 ), probably because of the complexity of the hydrocarbon mixture in OSPW and the resultant low concentration of individual components. For example, the total PAH cocktail in this pond was previously estimated as 2600 ng L −1 , but the naphthalene level only 101 ng L −1 (Madill et al, 1999 ).…”

Section: Discussioncontrasting

confidence: 54%

Benzene and Naphthalene Degrading Bacterial Communities in an Oil Sands Tailings Pond

et al. 2017

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Oil sands process-affected water (OSPW), produced by surface-mining of oil sands in Canada, is alkaline and contains high concentrations of salts, metals, naphthenic acids, and polycyclic aromatic compounds (PAHs). Residual hydrocarbon biodegradation occurs naturally, but little is known about the hydrocarbon-degrading microbial communities present in OSPW. In this study, aerobic oxidation of benzene and naphthalene in the surface layer of an oil sands tailings pond were measured. The potential oxidation rates were 4.3 μmol L−1 OSPW d−1 for benzene and 21.4 μmol L−1 OSPW d−1 for naphthalene. To identify benzene and naphthalene-degrading microbial communities, metagenomics was combined with stable isotope probing (SIP), high-throughput sequencing of 16S rRNA gene amplicons, and isolation of microbial strains. SIP using 13C-benzene and 13C-naphthalene detected strains of the genera Methyloversatilis and Zavarzinia as the main benzene degraders, while strains belonging to the family Chromatiaceae and the genus Thauera were the main naphthalene degraders. Metagenomic analysis revealed a diversity of genes encoding oxygenases active against aromatic compounds. Although these genes apparently belonged to many phylogenetically diverse taxa, only a few of these taxa were predominant in the SIP experiments. This suggested that many members of the community are adapted to consuming other aromatic compounds, or are active only under specific conditions. 16S rRNA gene sequence datasets have been submitted to the Sequence Read Archive (SRA) under accession number SRP109130. The Gold Study and Project submission ID number in Joint Genome Institute IMG/M for the metagenome is Gs0047444 and Gp0055765.

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Section: Discussioncontrasting

confidence: 54%

Benzene and Naphthalene Degrading Bacterial Communities in an Oil Sands Tailings Pond

et al. 2017

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“…PAH is highly hydrophobic in nature, therefore removal or remediation of these toxic pollutants is very challenging. Due to their toxicity, carcinogenicity, and mutagenicity property United States of Environmental Protection Agency (USEPA) has listed 16 PAH as priority pollutants . Naphthalene is a member of PAH compounds which is one of the most toxic compound commonly found in the effluent of oil refineries and coke oven industries .…”

Section: Introductionmentioning

confidence: 99%

“…Due to their toxicity, carcinogenicity, and mutagenicity property United States of Environmental Protection Agency (USEPA) has listed 16 PAH as priority pollutants. 3,4 Naphthalene is a member of PAH compounds which is one of the most toxic compound commonly found in the effluent of oil refineries and coke oven industries. 5,6 The permissible exposure of naphthalene is 0.1 mg/L to human being and acute oral LD 50 of naphthalene is 2200 to 2600 mg/kg.…”

Section: Introductionmentioning

confidence: 99%

Process optimization and comparative study on naphthalene biodegradation in anaerobic, anoxic, and aerobic moving bed bioreactors

Yadu

Sahariah

Anandkumar

2020

Engineering Reports

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The present work focuses on biodegradation of naphthalene by using batch moving bed bioreactor (MBBR) with mixed microbial consortia maintained in anaerobic, anoxic, and aerobic conditions. All the three reactors were exposed to 10 to 100 mg/L of naphthalene. An acclimatized microbial consortium was able to degrade the naphthalene nearly 90% to 94.8% and remove 76% to 91% chemical oxygen demand (COD) in anaerobic, anoxic, and aerobic reactors at 24 hours retention time (RT). Response surface methodology (RSM) was used for the optimization of process parameters using Design Expert 10 software. The optimum process parameters predicted by RSM for 100 mg/L influent naphthalene concentration is 18 hours RT to achieve 94.69% and 99.04% removal in anaerobic and aerobic reactor, whereas the optimum RT is found as 8 hours in anoxic reactor with 95.67% naphthalene removal. The design of experiment by RSM suggests that quadratic model can be best fitted to the present experimental study.

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“…This treatment system maintained a removal efficiency of 98-99% at solid retention time of 20 d and mixed liquor suspended solids concentration of 730 mg l −1 . Chang et al [25] studied the naphthalene (NAP) biodegradation using enriched activated sludge in the oil refinery wastewater. The bio-treatment process conducted in a 3-l constant flow stirred tank reactor was employed under different influent chemical oxygen demand (COD) and flow rates of wastewater containing NAP.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Investigation of petroleum-contaminated groundwater remediation using multi-stage pilot system: physical and biological approach

Zanjani

Vafaie

Mirbagheri

et al. 2015

Desalination and Water Treatment

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Biodegradation of naphthalene in the oil refinery wastewater by enriched activated sludge

Cited by 26 publications

References 27 publications

Benzene and Naphthalene Degrading Bacterial Communities in an Oil Sands Tailings Pond

Benzene and Naphthalene Degrading Bacterial Communities in an Oil Sands Tailings Pond

Process optimization and comparative study on naphthalene biodegradation in anaerobic, anoxic, and aerobic moving bed bioreactors

Investigation of petroleum-contaminated groundwater remediation using multi-stage pilot system: physical and biological approach

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