Application of rhamnolipid and surfactin for enhanced diesel biodegradation—Effects of pH and ammonium addition

Whang, Liang Ming; Liu, Pao Wen G.; Chung, Chih Yin; Cheng, Shyuan

doi:10.1016/j.jhazmat.2008.09.006

Cited by 56 publications

(34 citation statements)

References 48 publications

(46 reference statements)

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“…Various gammaproteobacteria have the ability to produce biosurfactant molecules. For example, the Acinetobacter calcoaceticus RAG-1 can produce emulsan [47][48][49][50][51][52][53][54].…”

Section: Discussionmentioning

confidence: 99%

“…A further reason for the apparent lack of biosurfactant may be the decrease in pH. One study found that surfactin (SF) produced by bacteria disappeared rapidly in the medium broth once the pH fell below 5.0 [51]. In a later study, the disappearance of SF was linked to its precipitation triggered by the accumulation of extracellular acidic metabolites [52].…”

Section: Discussionmentioning

confidence: 99%

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Biodegradation of n-hexadecane by bacterial strains B1 and B2 isolated from petroleum-contaminated soil

et al. 2012

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Two hydrocarbon-biodegrading bacterial strains, B1 and B2, were isolated from petroleum-contaminated soil collected from Tianjin, China. The strains were identified as Pseudomonas aeruginosa (B1) and Acinetobacter junii (B2). The degradation rate of n-hexadecane by B1 and B2 reached 96% and 78% respectively after 7 days, though the strains employed different mechanisms of degradation. The results showed that B2 was not able to use glucose as carbon source. B1 could produce glycolipid surfactants using glucose as the carbon source, according to the results of blue agar plate analysis and thin layer chromatography (TLC), and the bacterial culture of B1 had a high oil discharge and emulsification activity. Both B1 and B2 could produce biosurfactants with hexadecane as the sole carbon source, but their modes of action were different. The carbon source was found to affect the cell surface hydrophobicity. Cell surface hydrophobicity was poor with glucose as the carbon source, but enhanced when hexadecane was used as the carbon source.

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“…Various gammaproteobacteria have the ability to produce biosurfactant molecules. For example, the Acinetobacter calcoaceticus RAG-1 can produce emulsan [47][48][49][50][51][52][53][54].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Biodegradation of n-hexadecane by bacterial strains B1 and B2 isolated from petroleum-contaminated soil

et al. 2012

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“…The results of this paper when compared with those in the literature [1,7,10,11,26,27] have a better performance, since the paper described above, use wash columns or surfactants in need of treatment by bioremediation a longer treatment time. While the methodology employed in this paper covers a larger area of treatment and still need a shorter time to treat this larger area resulting in a similar percentage of removal.…”

Section: Influence Of Injection Volumes Of the Systems In Removal Effmentioning

confidence: 89%

“…Among this range of techniques already established for remediation, bioremediation has been used as a solution to the degradation of petroleum hydrocarbons in soil and in contaminated water [5][6][7][8][9][10]. One can also highlight the studies developed with the use of bio-surfactants, which show great efficiencies in the remediation of oil contaminated soils [11].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Injection Systems in Vapor Phase in the Remediation of Soils Contaminated by Diesel

Bezerril¹,

Souza²

2014

J Pet Environ Biotechnol

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Gasoline and diesel leaks in underground storage tanks contaminate soils with petroleum hydrocarbons. Various techniques using surfactants have been proposed to remedy this type of contamination. This study presents the application of different systems containing surfactants in vapor phase. It compares the removal efficiencies of diesel contaminated soils using vapor injection systems: surfactant water solutions, micro-emulsions, and nano-emulsions. The surfactant used in the experiments was ethoxylated alcohol UNTL-90 in aqueous solution, in nano-emulsion, and micro-emulsion systems. Among the systems investigated, the nano-emulsion showed the highest removal efficiency (88%), being environmentally friendly and technically feasible with a system that has a lower content of active matter.

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“…Indicam também influência do pH e concentrações de amônia na atividade de biossurfactantes na biorremediação (WHANG et al, 2009).…”

Section: Aplicações Dos Biossurfactantesunclassified

Produção de biossurfactantes por Bacillus pumilus e avaliação da biorremediação de solo e água contaminados com óleo

Oliveira¹

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Application of rhamnolipid and surfactin for enhanced diesel biodegradation—Effects of pH and ammonium addition

Cited by 56 publications

References 48 publications

Biodegradation of n-hexadecane by bacterial strains B1 and B2 isolated from petroleum-contaminated soil

Biodegradation of n-hexadecane by bacterial strains B1 and B2 isolated from petroleum-contaminated soil

Comparative Study of Injection Systems in Vapor Phase in the Remediation of Soils Contaminated by Diesel

Produção de biossurfactantes por Bacillus pumilus e avaliação da biorremediação de solo e água contaminados com óleo

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