Biodegradation of benzene by pure and mixed cultures of Bacillus spp.

Liu, Jiann-Hong; Maity, Jyoti Prakash; Jean, Jiin-Shuh; Chen, Chien‐Yen; Chen, Chien‐Cheng; Ho, Sin-Yi

doi:10.1007/s11274-010-0331-9

Cited by 27 publications

(5 citation statements)

References 48 publications

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“…This indicated removal of gasoline by biological activity. Our results were similar to a study conducted by Liu et al [27]. They observed that Bacillus isolates: Bacillus sp.…”

Section: Growth and Biodegradation Potential Towards Gasoline Of B Subtilis Se1supporting

confidence: 93%

Isolation, optimisation and gasoline biodegradation by lipopeptide-producing Bacillus subtilis SE1

Nimrat¹,

Lookchan²,

Boonthai³

et al. 2020

ScienceAsia

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Biosurfactant-producing bacteria were isolated from hydrocarbon contaminated soils. The highest surface and emulsification activities were achieved with a strain identified as Bacillus subtilis SE1. Optimal condition for biosurfactant production of B. subtilis SE1 included supplementation of glucose and yeast extract (10 g/l each) in the medium at 30°C, initial pH 7.0 and no NaCl added, giving biosurfactant yield of 66.00 ± 1.54 mg/l. Biosurfactant produced by B. subtilis SE1 was characterised as lipopeptide and reduced the surface tension from 72.27 ± 0.01 to 25.95 ± 0.06 mN/m with a critical micelle concentration of 4.69 ± 0.11 mg/l. In a biodegradation assay, the experiment was conducted in 3 treatments for 7 days: gasoline-contaminated soil (T1); gasoline-contaminated soil with B. subtilis SE1 bioaugmentation (T2); and gasoline-contaminated soil with addition of B. subtilis SE1 and nutrients (glucose and yeast extract) (T3). The highest viable bacterial count (8.00 ± 0.04 log CFU/g) and percent reduction of total phenolic content (9.73 ± 1.13%) were observed in T3, which were significantly (p < 0.05) higher than those of T1 (5.60 ± 0.02 log CFU/g and 3.68 ± 0.83%) and T2 (7.12 ± 0.01 log CFU/g and 5.04 ± 0.30%). These results reveal the potential of biosurfactant-producing B. subtilis SE1 for use in bioremediation of hydrocarbon contaminated environment in Thailand.

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“…This indicated removal of gasoline by biological activity. Our results were similar to a study conducted by Liu et al [27]. They observed that Bacillus isolates: Bacillus sp.…”

Section: Growth and Biodegradation Potential Towards Gasoline Of B Subtilis Se1supporting

confidence: 93%

Isolation, optimisation and gasoline biodegradation by lipopeptide-producing Bacillus subtilis SE1

Nimrat¹,

Lookchan²,

Boonthai³

et al. 2020

ScienceAsia

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“…The results suggested that the genera of Bacillus were found to be predominant and involved in benzene biodegradation. This finding is supported by Liu et al [43].…”

Section: Molecular Characterization (16s Rrna) Of Bacterial Isolatesupporting

confidence: 78%

“…Beyond 40 mL•h −1 , the decrease in RE was more sharp which indicates the possibility of change in controlling mechanism in the bioreactor [20][21][22]. Hassan et al [47] reported the benzene loading up to 34.1 g m −3 h −1 and removal efficiency consistently over 98% was achieved while at loading of 76.8 g m −3 h −1 removal efficiency was observed above 80% and 6.9 g m −3 h −1 EC [10,29,31,[42][43][44][45][46][47]. Fig.…”

Section: Biodegradation Of Benzene In Pbbr and Cpbbrmentioning

confidence: 95%

Removal of aqueous benzene in the immobilized batch and continuous packed bed bioreactor by isolated Bacillus sp. M1

Singh¹,

Shukla²,

N.³

et al. 2016

REFFIT

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Benzene biodegradation was studied in batch and continuous packed bed bioreactors using polyurethane foam (PUF) as packing media byisolated Bacillus sp. M1. The values of optimized process parameters were found to be 800 × 106 CFU·mL−1, 400 mg·L−1, 7.0 and 37 °C forinoculum size, substrate concentration, pH and temperature respectively. Continuous packed bed bioreactor (CPBBR) was operated and monitoredfor 69 days on laboratory scale at various flow rates (10–60 mL·h−1). The steady state removal efficiency was observed more than 90% up to theinlet load of 288 mg·L−1.d−1 and elimination capacity was found to be 91.2–266.4 mg·L−1·day−1. Monod growth model was applied for the removalof benzene and values were found to be (Ks: 215.07 mg·L−1; μmax: 0.314 day−1).

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“…Also, the use of bioremediation strategies, being cost effective, entails higher time treatment. Thus, Singh and Fulekar and Liu et al (38,39) concluded remediation levels about 100% for benzene and toluene after a one-week degradation process.…”

Section: Aromatics Extractionmentioning

confidence: 99%

On the Use of Ionic Liquids to Separate Aromatic Hydrocarbons from a Model Soil

Pereiro

Deive

Rodríguez

2012

Separation Science and Technology

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The potential of exploiting ionic liquids (ILs) for an ex situ solvent aromatic extraction technique is envisaged in this work, due to the serious proportions reached by this kind of contaminants associated with the industrial progress. 1-butyl-1-methylpyrrolidinium bis (trifluoromethylsulfonyl) imide, tetraalkyl ammonium sulfate, trihexyl (tetradecyl) phosphonium dicyanamide, 1-hexyl-3-methylimidazolium hexafluorophosphate, 1,3-dimethylimidazolium methyl sulfate, and 1-butyl-3-methylimidazolium methyl sulfate are proposed to efficiently extract benzene, toluene, and ethylbenzene at concentrations over the maximum allowable limit. The extraction procedure is completed with a washing and recycling step with the purpose of achieving a more competitive process.

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Biodegradation of benzene by pure and mixed cultures of Bacillus spp.

Cited by 27 publications

References 48 publications

Isolation, optimisation and gasoline biodegradation by lipopeptide-producing Bacillus subtilis SE1

Isolation, optimisation and gasoline biodegradation by lipopeptide-producing Bacillus subtilis SE1

Removal of aqueous benzene in the immobilized batch and continuous packed bed bioreactor by isolated Bacillus sp. M1

On the Use of Ionic Liquids to Separate Aromatic Hydrocarbons from a Model Soil

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