Bioremediation and toxicity determination of natural seawater polluted with weathered crude oil by salt-tolerant consortia in a SBR

Ruíz, M.; Pasadakis, Nikos; Kalogerakis, Nicolas

doi:10.1016/j.marpolbul.2006.05.015

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…The variables levels were selected based on preliminary study results (Mohajeri et al 2010b) and literature review (Kim et al 2005;Chaillan et al 2006;Ruiz et al 2006;Margesin & Schinner 2005). Response surface methodology and central composite design (face centered) were used to determine the optimum conditions.…”

Section: Experimental Designmentioning

confidence: 99%

Response surface analysis and modeling of n-alkanes removal through bioremediation of weathered crude oil

Mohajeri

Aziz

Zahed

et al. 2011

Water Science and Technology

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Central composite design (CCD) and response surface methodology (RSM) were employed to optimize four important variables, i.e. amounts of oil, bacterial inoculum, nitrogen and phosphorus, for the removal of selected n-alkanes during bioremediation of weathered crude oil in coastal sediments using laboratory bioreactors over a 60 day experimentation period. The reactors contained 1 kg soil with different oil, microorganisms and nutrients concentrations. The F Value of 26.89 and the probability value (P < 0.0001) demonstrated significance of the regression model. For crude oil concentration of 2, 16 and 30 g per kg sediments and under optimized conditions, n-alkanes removal was 97.38, 93.14 and 90.21% respectively. Natural attenuation removed 30.07, 25.92 and 23.09% n-alkanes from 2, 16 and 30 g oil/kg sediments respectively. Excessive nutrients addition was found to inhibit bioremediation.

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Section: Experimental Designmentioning

confidence: 99%

Response surface analysis and modeling of n-alkanes removal through bioremediation of weathered crude oil

Mohajeri

Aziz

Zahed

et al. 2011

Water Science and Technology

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“…Targeted management of the PAH pollution problem in Greece is at initial stages. Apart of several studies focused on bioremediation treatment plants using consortia of hydrocarbon degrading microorganisms11, 12, research on the biochemistry and molecular biology of PAH uptake and biodegradation is very limited. Recently, some reports have appeared aiming to screening and selection of microorganisms with PAH and crude oil biodegradation abilities13, 14.…”

Section: The Pah‐pollution Problem In Greecementioning

confidence: 99%

Addressing PAH biodegradation in Greece: Biochemical and molecular approaches

Koukkou¹,

Drainas²

2008

IUBMB Life

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“…Oil spills are currently considered as a major problem on the environment [1][2][3]. Apart from the accidental contamination of ecosystem, vast amounts of sludge are generated from refinery and processing activities including water oil separation systems and crude oil storage tank (accumulated waste materials) pose great problems because of the expensive disposal methods [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, their release to the environment is strictly controlled. Bioremediation is considered to be an attractive approach employed for the cleaning up of petroleum hydrocarbons because of its simplicity, applicability to large areas, costeffectiveness and complete destructive nature [1,[14][15][16][17][18][19][20][21][22][23][24][25]. Strategies normally used for inexpensive bioremediation includes natural attenuation, biostimulation, bioventing, bioaugmentation, land farming, composting and phytoremediation [17,25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Co‐culture and Nutrients Supplementation on Bioremediation of Crude Petroleum Sludge

Devi

Reddy

Juwarkar

et al. 2011

CLEAN Soil Air Water

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Ex-situ bioremediation of real-field crude petroleum sludge was evaluated to elucidate the role of co-culture (bioaugmentation) and external nutrients supplementation (biostimulation) under anaerobic microenvironment. Maximum removal of total petroleum hydrocarbons (TPH) was observed by integrating biostimulation with bioaugmentation (R5, 44.01%) followed by bioaugmentation alone (R4, 34.47%), co-substrate supplemented operations [R6, 23.36%; R3, 16.5%; R2, 9.88%] and control (R1, 4.36%). Aromatics fraction showed higher degradation in all the conditions studied. Fate of six selected polycyclic aromatic hydrocarbons (PAHs) was evaluated during bioremediation. Among these, four ring PAHs compounds showed good degradation by integration of biostimulation with bioaugmentation (R5) while bioaugmentation alone (R4) documented good degradation of three ring PAHs. Lower ring PAHs compounds showed good degradation with the application of biostimulation (R6). Fluorescent in situ hybridization (FISH) detected the presence of known PAHs degrading microorganisms viz., Bacillus, Pseudomonas, Acido bacteria, Sulphur reducing bacteria Firmicutes, etc. Application of biostimulation and bioaugmentation strategies alone or in combinations documented noticeable influence on the degradation of petroleum sludge.

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Bioremediation and toxicity determination of natural seawater polluted with weathered crude oil by salt-tolerant consortia in a SBR

Cited by 10 publications

References 21 publications

Response surface analysis and modeling of n-alkanes removal through bioremediation of weathered crude oil

Response surface analysis and modeling of n-alkanes removal through bioremediation of weathered crude oil

Addressing PAH biodegradation in Greece: Biochemical and molecular approaches

Effect of Co‐culture and Nutrients Supplementation on Bioremediation of Crude Petroleum Sludge

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