Degradation of polyaromatic hydrocarbons employing biosurfactant-producing Bacillus pumilus KS2

Patowary, Kaustuvmani; Saikia, Rashmi Rekha; Kalita, Mohan Chandra; Deka, Suresh

doi:10.1007/s13213-014-0854-7

Cited by 73 publications

(41 citation statements)

References 36 publications

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“…A decrease in the surface tension measurements was observed in the selected isolates, in comparison with pure water and the negative control. For example, five isolates (ODW02, ODW12, ODW15, MO13 and MO4B) and the positive control ( P. aeruginosa ) have displayed surface tensions below 30 mN m −1 , which are exceptional results when compared to existing literature, which indicates that a surface tension value of 35 mN m −1 is required for an efficient biosurfactant (Patowary et al ., ). All tests were performed with cell‐free supernatants.…”

Section: Resultsmentioning

confidence: 98%

Identification and ultra‐high‐performance liquid chromatography coupled with high‐resolution mass spectrometry characterization of biosurfactants, including a new surfactin, isolated from oil‐contaminated environments

Moro

Almeida

Napp

et al. 2018

Microbial Biotechnology

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SummaryBiosurfactant‐producing bacteria were isolated from samples collected in areas contaminated with crude oil. The isolates were screened for biosurfactant production using qualitative drop‐collapse test, oil‐spreading and emulsification assays, and measurement of their tensoactive properties. Five isolates tested positive for in the screening experiments and displayed decrease in the surface tension below 30 mN m−1. The biosurfactants produced by these isolates were further investigated and their molecular identification revealed that they are bacteria related to the Bacillus genus. Additionally, the biosurfactants produced were chemically characterized via UHPLC‐HRMS experiments, indicating the production of surfactin homologues, including a new class of these molecules.

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Section: Resultsmentioning

confidence: 98%

Identification and ultra‐high‐performance liquid chromatography coupled with high‐resolution mass spectrometry characterization of biosurfactants, including a new surfactin, isolated from oil‐contaminated environments

Moro

Almeida

Napp

et al. 2018

Microbial Biotechnology

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“…Among these genera, although the relative abundance of the bacteria at genus level differed depending on the operation conditions, it appeared that Bacillus was the most abundant genus throughout the whole operation period. Bacillus has been reported to possess the abilities of degrading various organic compounds [50][51][52][53]. The genus Pseudomonas, with a chemolithoautotrophic and heterotrophic functionality, has been reported to play an important role in organic compound degradation [54,55].…”

Section: Shifts In Microbial Community Structures With Seasonal Tempementioning

confidence: 99%

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Lü

2017

Applied Sciences

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Due to environmental burden and human health risks in developing countries, the treatment of decentralized domestic wastewater has been a matter of great concern in recent years. A novel pilot-scale three-stage anaerobic wool-felt filter reactor (AWFR) was designed to treat real decentralized domestic wastewater at seasonal temperature variations of 8 to 35 • C for 364 days. The results showed that the average chemical oxygen demand (COD) removal efficiencies of AWFR in summer and winter were 76 ± 7.2% and 52 ± 5.9% at one day and three days Hydraulic Retention Time (HRT), respectively. COD mass balance analysis demonstrated that even though COD removal was lower in winter, approximately 43.5% of influent COD was still converted to methane. High-throughput MiSeq sequencing analyses indicated that Methanosaeta, Methanobacterium, and Methanolinea were the predominant methanogens, whereas the genus Bacillus probably played important roles in fermentation processes throughout the whole operation period. The performance and microbial community composition study suggested the application potential of the AWFR system for the pretreatment of decentralized domestic wastewater.

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“…Members of genus Flavobacterium (Bacteroidetes) have been linked to biodegradation of a variety of organic pollutants (Nedashkovskaya et al 2014;Sack et al 2011;Sun et al 2011). In addition, microorganisms within genus Bacillus (Firmicutes) can biodegrade a number of organic compounds (Chebbi et al 2014;Nakkabi et al 2015;Patowary et al 2015;Reddy et al 2014;Xiao et al 2015;Zhao et al 2014). Therefore, the dominance of microorganisms from a variety of bacterial genera might play important roles in the removal of organic compounds in the three CV systems and thus contribute to the effective reduction of DOC in polluted river water.…”

Section: Bacterial Generamentioning

confidence: 99%

Influence of substrate type on microbial community structure in vertical-flow constructed wetland treating polluted river water

Guan

Yin²,

et al. 2015

Environ Sci Pollut Res

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Microorganisms attached on the surfaces of substrate materials in constructed wetland play crucial roles in the removal of organic and inorganic pollutants. However, the impact of substrate material on wetland microbial community structure remains unclear. Moreover, little is known about microbial community in constructed wetland purifying polluted surface water. In this study, Illumina high-throughput sequencing was applied to profile the spatial variation of microbial communities in three pilot-scale surface water constructed wetlands with different substrate materials (sand, zeolite, and gravel). Bacterial community diversity and structure showed remarkable spatial variation in both sand and zeolite wetland systems, but changed slightly in gravel wetland system. Bacterial community was found to be significantly influenced by wetland substrate type. A number of bacterial groups were detected in wetland systems, including Proteobacteria, Chloroflexi, Bacteroidetes, Acidobacteria, Cyanobacteria, Nitrospirae, Planctomycetes, Actinobacteria, Firmicutes, Chlorobi, Spirochaetae, Gemmatimonadetes, Deferribacteres, OP8, WS3, TA06, and OP3, while Proteobacteria (accounting for 29.1-62.3 %), mainly composed of Alpha-, Beta-, Gamma-, and Deltaproteobacteria, showed the dominance and might contribute to the effective reduction of organic pollutants. In addition, Nitrospira-like microorganisms were abundant in surface water constructed wetlands.

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Degradation of polyaromatic hydrocarbons employing biosurfactant-producing Bacillus pumilus KS2

Cited by 73 publications

References 36 publications

Identification and ultra‐high‐performance liquid chromatography coupled with high‐resolution mass spectrometry characterization of biosurfactants, including a new surfactin, isolated from oil‐contaminated environments

Identification and ultra‐high‐performance liquid chromatography coupled with high‐resolution mass spectrometry characterization of biosurfactants, including a new surfactin, isolated from oil‐contaminated environments

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Influence of substrate type on microbial community structure in vertical-flow constructed wetland treating polluted river water

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