Interactions between rhamnolipid biosurfactants and toxic chlorinated phenols enhance biodegradation of a model hydrocarbon-rich effluent

Chrzanowski, Łukasz; Owsianiak, Mikołaj; Szulc, Alicja; Marecik, Roman; Piotrowska-Cyplik, Agnieszka; Olejnik-Schmidt, Agnieszka; Staniewski, Jacek; Lisiecki, Piotr; Ciesielczyk, Filip; Jesionowski, Teofil; Heipieper, Hermann J.

doi:10.1016/j.ibiod.2010.10.015

Cited by 44 publications

(32 citation statements)

References 36 publications

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“…Entrapment of TNT in rhamnolipid micelles, reduced the toxicity of TNT. This is in accordance with the results obtained by [22] who reported that toxicity of chlorophenols could be significantly reduced by the entrapment of chlorophenols in biosurfactant micelles which in turn resulted in improved microbial growth and higher biodegradation of chlorophenols. Tests of PETN biodegradation with and without amendment of rhamnolipid (pan8 and 4 respectively), were shown in fig 3. In the absence of rhamnolipid, approximately 5% of the initial PETN removed by 84 days (7 weeks).…”

Section: Kinetic Studiessupporting

confidence: 93%

“…Compare with pan 4, nitrite releasing in pan 8 which rhamnolipid was added, showed higher amount (data not shown). similar results were found by [22]. They reported that rhamnolipid had a positive effect on diesel fuel biodegradation in cultures containing 4-chlorophenol (4-CP) or 2, 4-dichlorophenol, by dehydrogenase activity.…”

Section: Kinetic Studiessupporting

confidence: 81%

“…This can be due to addition of rhamnolipid which result in increasing the solubility of explosives and then enhancing the explosive biodegradation. Surfactants can increase the surface area of hydrophobic materials, so increasing their water solubility and subsequently increase the biodegradation of complex hydrocarbons [22]. Fig.2.…”

Section: Kinetic Studiesmentioning

confidence: 99%

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Enhanced Aerobic Biodegradation of Soil Contaminated with Explosives (TNT and PETN) By Rhamnolipid

Karami¹,

Amin²,

Bina³

et al. 2017

Eurasian J Anal Chem

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The aim of this study was to investigate the bioremediation of two explosives 2, 4, 6-trinitrotoluene (TNT) and Pentaerythritol Tetranitrate (PETN) in mixture by aerobic process. Microbial inocula were obtained from a textile wastewater treatment plant activated sludge. Addition of rhamnolipid surfactant (60 mg/l) increased the removal efficiencies of TNT and PETN from 53% and 57% to 98% and 91%, respectively. Explosives degradation reaction is expressed to be of first-order and the kinetic reaction parameters are calculated based on different initial concentrations of TNT and PETN. The first-order rate constants of the rhamnolipid amended experiments were at least 3 orders and 2.5 orders of magnitude higher for TNT and PETN, respectively, than those found for not amended rhamnolipid experiments. The metabolites pentaerythritoldinitrate,3-hydroxy-2,2-bis [(nitrooxy)methyl]propanal,and2,2-bis-[(nitrooxy)methyl]-propanedialfor PETN and2-amino-4, 6-dinitrotoluene and 4-amino-2, 6-dinitrotoluene for TNT were identified by LC-MS. Concomitant degradation of TNT and PETN resulted in decrease of environment pH. Inoculated bacteria have capability to use of explosive as source of nitrogen and energy. It seems that the addition of rhamnolipid showed great potential for treatment of explosives by textile activated sludge.

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Section: Kinetic Studiessupporting

confidence: 93%

Section: Kinetic Studiessupporting

confidence: 81%

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Enhanced Aerobic Biodegradation of Soil Contaminated with Explosives (TNT and PETN) By Rhamnolipid

Karami¹,

Amin²,

Bina³

et al. 2017

Eurasian J Anal Chem

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“…The pseudo-first order k well matched with the present work for the degradation of ethyl orange dye using TiO 2 (99.9% anatase) and a high pressure mercury lamp under aerobic condition [39]. They found that k varied from 1.1 × 10 −3 to 7.8 × 10 −3 min −1 at various pHs (2)(3)(4)(5)(6)(7)(8)(9)(10)(11).…”

Section: Kinetics Of Phenol Decompositionsupporting

confidence: 87%

“…Phenol and phenol-derivatives are common in various industrial effluents such as coal gasification [1], olive oil production [2] and petrochemicals [3]. Activated sludge process gives inefficient degradation of phenol and phenol derivatives due to toxic and inhibitory effects to microorganisms [4,5].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of Ag-doped titania: impact of dye-sensitization, phenol decomposition kinetics and biodegradability index

Behera

Rao

Das

et al. 2015

Desalination and Water Treatment

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A B S T R A C THeterogeneous photocatalytic wastewater treatment using TiO 2 is a well-accepted technique under UV light illumination. Different strategies are employed to modify TiO 2 for shifting its photo-response to the visible light. In this work, Ag-doped TiO 2 nano-composites were synthesized by UV photo-reduction method to narrow down the band gap energy. Further, dye sensitization was performed using Eosin Yellowish to find out its influence on phenol decomposition. Synthesized catalysts were characterized using diffuse UV-vis spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy (TEM), Brunner Emmer Teller (BET) area and zeta-potential measurements. Nanowire like structure was observed with 30-70 nm in diameter from TEM images. BET surface area was decreased considerably with Ag-doping (maximum 31.6%) and dye sensitization (40.6%). Ag concentration and solution pH showed dramatic impact on phenol decomposition with maximum 87% at pH 7, Ag-loading 1% (w/w) and catalyst dose 0.5 g L −1 . Practically no positive synergy was noted with dye sensitization even though the photo-responses were moved intensely to the visible region. The pseudo-first order kinetic exhibited sound agreement to the experimental results with correlation coefficient ≥0.98. Moreover, the enhancement of biodegradability is investigated in terms of biochemical to chemical oxygen demand.

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Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

Liu

Zhong

Yang³

et al. 2018

Biotech & Bioengineering

157

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The objective of this review is to provide a comprehensive overview of the advances in the applications of rhamnolipids biosurfactants in soil and ground water remediation for removal of petroleum hydrocarbon and heavy metal contaminants. The properties of rhamnolipids associated with the contaminant removal, that is, solubilization, emulsification, dispersion, foaming, wetting, complexation, and the ability to modify bacterial cell surface properties, were reviewed in the first place. Then current remediation technologies with integration of rhamnolipid were summarized, and the effects and mechanisms for rhamnolipid to facilitate contaminant removal for these technologies were discussed. Finally rhamnolipid-based methods for remediation of the sites co-contaminated by petroleum hydrocarbons and heavy metals were presented and discussed. The review is expected to enhance our understanding on environmental aspects of rhamnolipid and provide some important information to guide the extending use of this fascinating chemical in remediation applications.

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Interactions between rhamnolipid biosurfactants and toxic chlorinated phenols enhance biodegradation of a model hydrocarbon-rich effluent

Cited by 44 publications

References 36 publications

Enhanced Aerobic Biodegradation of Soil Contaminated with Explosives (TNT and PETN) By Rhamnolipid

Enhanced Aerobic Biodegradation of Soil Contaminated with Explosives (TNT and PETN) By Rhamnolipid

Fabrication and characterization of Ag-doped titania: impact of dye-sensitization, phenol decomposition kinetics and biodegradability index

Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

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