Influence of hydrodynamic conditions on naphthalene dissolution and subsequent biodegradation

Mulder, Henk; Breure, A.M.; Andel, J. van; Grotenhuis, J.T.C.; Rulkens, W.H.

doi:10.1002/(sici)1097-0290(19980120)57:2<145::aid-bit3>3.0.co;2-n

Cited by 35 publications

(50 citation statements)

References 24 publications

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“…When surfactant concentrations increased, the k L ЈaЈ values of naphthalene estimated by nonlinear regression depicted in Figure 2 decreased from 2.53 ϫ 10 Ϫ4 sec Ϫ1 to 2.80 ϫ 10 Ϫ5 sec Ϫ1 . These empirical findings are consistent with earlier findings, 27,35,36 indicating that k L ЈaЈ values decrease with the surfactant concentration. In addition, Table 3 and Figure 6 show the viscosities of three nonionic surfactants at various surfactant concentrations.…”

Section: Effects Of Surfactants On Naphthalene Absorptionsupporting

confidence: 93%

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Huang

Lee

2003

Journal of the Air & Waste Management Association

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Previous research has demonstrated that an anionic surfactant can increase the solubility of the vapor phases of both naphthalene and sulfur dioxide in water. This study examines the feasibility of removing polycyclic aromatic hydrocarbons (PAHs) during gas absorption by adding the polyoxyethylenated nonionic surfactants tetraethylene glycol monodecyl ether (C 10 E 4 ), octaethylene glycol monodecyl ether (C 10 E 8 ), and octaethylene glycol monotetradecyl ether (C 14 E 8 ), to water. The apparent solubility and absorption rates of naphthalene in surfactant solution were slightly higher than in pure water at a concentration lower than the critical micelle concentration (CMC). However, the apparent equilibrium naphthalene solubility increased linearly in proportion to the concentrations of nonionic surfactants because of the solubilization effect of micelles at concentrations above the CMC. The solubilization effect exceeded that of the reduced mass transfer coefficient, increasing the rate of absorption of vaporous naphthalene. For the four surfactants, the capacity to solubilize naphthalene was in the order C 10 E 4 Ͼ C 14 E 8 Ͼ C 10 E 8 Ͼ sodium dodecyl sulfate (SDS) and was related to the hydrophile-lipophile balance values of the surfactants. The enrichment factors, which can express the degree of naphthalene solubility in solution, were 6.09 -14.2 at a surfactant concentration of 0.01 M for the three polyoxyethylenated nonionic surfactants. Empirical findings confirm that adding nonionic surfactants increases the absorption efficiency of hydrophobic organic compounds (HOCs) using spray or packed tower.

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Section: Effects Of Surfactants On Naphthalene Absorptionsupporting

confidence: 93%

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Huang

Lee

2003

Journal of the Air & Waste Management Association

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“…chrysene as the carbon source for growth and metabolism. Bacterial utilization of PAH compound as carbon source by various bacteria has been reported in a number of studies (Walter et al 1991;Boyd et al 1999;Caldini et al 1995;Nwanna et al 2006;Johnsen et al 2005;Mulder et al 1998, Jacques et al 2005). …”

Section: Biosurfactant Productionmentioning

confidence: 94%

Biodegradation of chrysene by the bacterial strains isolated from oily sludge

Dhote

Juwarkar

Kumar

et al. 2009

World J Microbiol Biotechnol

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The biodegradation studies were conducted to test the ability of the bacterial strains (Chry2 and Chry3) isolated from the oily sludge obtained from Gujarat refinery, India, for utilization of chrysene in the liquid medium. Biodegradation of the compound was confirmed using gas chromatography and the percent degradation was calculated to be 15.0 and 17% by Chry2 and Chry3, respectively. The biodegradation results were supported by increase in viable cell count and dry biomass, in the presence of chrysene as the sole carbon source. Both the cultures produced biosurfactant which was indicated by the reduction in surface tension of the growth medium. Presence of catechol 2, 3-dioxygenase gene in Chry3 indicated its potential for degradation of PAHs through meta cleavage degradation pathway. Both the strains were found to possess catechol 1,2-dioxygenase and catechol 2,3-dioxygenase enzyme activities. Based on morphological and biochemical tests, the cultures were tentatively identified as Bacillus sp. (Chry2) and Pseudomonas sp. (Chry3).

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“…Two organisms were used in this study. Pseudomonas putida 8909N was isolated by Volkering et al (25) and is reported to grow on naphthalene, phenanthrene, and anthracene and to form biofilms on naphthalene (26). Since work in our laboratory indicated that P. putida 8909N does not appear to grow rapidly on solid anthracene per our usual protocols, we chose Mycobacterium frederiksbergense LB501T for the anthracene experiments instead because it is very efficient at abstracting anthracene from solution and grows well on anthracene crystals, forming biofilms (27,28).…”

Section: Methodsmentioning

confidence: 99%

Model Polymer Release System Study of PAH Bioaccessibility: The Relationship between “Rapid” Release and Bioaccessibility

Wells

Wick

Harms

2005

Environ. Sci. Technol.

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This paper examines bacterial uptake of polycyclic aromatic hydrocarbons (PAHs) entrained within model polymer release systems (MPRSs) whose release kinetics, particularly for operationally defined "slow" release, are similarto PAH release kinetics from sediments and soils. We find that biodegradation is not restricted to the fraction "rapidly" released, f1, as quantified by an empirical biphasic exponential fitting parameter. Though our results indicate that f1 does not predict bioaccessibility (defined by a recent paper calling for a standard definition of same), we analyze the causes of the reported limitation of biodegradation to rapidly released PAHs and we find that, for the MPRSs, there are very strong correlations between an ad hoc bioaccessibility and a wide range of fitting parameters from various kinetic expressions used to phenomenologically characterize release. These results indicate that fitting parameters may be used to predict ad hoc bioaccessibility; however, it is not clear if this is actually a particularly useful quantity. We also report experimental results which indicate that bacteria may influence their environment and cause biological uptake to exceed that expected from abiotic release data obtained under quasi-infinite sink conditions. When this occurs, fitting parameters from simple empirical expressions are even inadequate to predict ad hoc bioaccessibility.

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Influence of hydrodynamic conditions on naphthalene dissolution and subsequent biodegradation

Cited by 35 publications

References 24 publications

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Biodegradation of chrysene by the bacterial strains isolated from oily sludge

Model Polymer Release System Study of PAH Bioaccessibility: The Relationship between “Rapid” Release and Bioaccessibility

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