scholarly journals Practical Considerations and Challenges Involved in Surfactant Enhanced Bioremediation of Oil

2013 ◽  
Vol 2013 ◽  
pp. 1-16 ◽  
Author(s):  
Sagarika Mohanty ◽  
Jublee Jasmine ◽  
Suparna Mukherji
Keyword(s):  
Aromatic Hydrocarbons ◽  
Structural Complexity ◽  
Surface Characteristics ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Micellar Solubilization ◽  
Substrate Interaction ◽  
Surfactant Interactions ◽  
Fuel Oils ◽  
Enhanced Bioremediation ◽  
Phase Liquid

Surfactant enhanced bioremediation (SEB) of oil is an approach adopted to overcome the bioavailability constraints encountered in biotransformation of nonaqueous phase liquid (NAPL) pollutants. Fuel oils containn-alkanes and other aliphatic hydrocarbons, monoaromatics, and polynuclear aromatic hydrocarbons (PAHs). Although hydrocarbon degrading cultures are abundant in nature, complete biodegradation of oil is rarely achieved even under favorable environmental conditions due to the structural complexity of oil and culture specificities. Moreover, the interaction among cultures in a consortium, substrate interaction effects during the degradation and ability of specific cultures to alter the bioavailability of oil invariably affect the process. Although SEB has the potential to increase the degradation rate of oil and its constituents, there are numerous challenges in the successful application of this technology. Success is dependent on the choice of appropriate surfactant type and dose since the surfactant-hydrocarbon-microorganism interaction may be unique to each scenario. Surfactants not only enhance the uptake of constituents through micellar solubilization and emulsification but can also alter microbial cell surface characteristics. Moreover, hydrocarbons partitioned in micelles may not be readily bioavailable depending on the microorganism-surfactant interactions. Surfactant toxicity and inherent biodegradability of surfactants may pose additional challenges as discussed in this review.

Determination of Polynuclear Aromatic Hydrocarbons in Seafood by Liquid Chromatography with Fluorescence Detection

1992 ◽  
Vol 75 (5) ◽  
pp. 872-877 ◽  
Author(s):  
Gracia A Perfetti ◽  
Patricia J Nyman ◽  
Sheryl Fisher ◽  
Frank L Joe ◽  
Gregory W Diachenko
Keyword(s):  
Liquid Chromatography ◽  
Fluorescence Detection ◽  
Aromatic Hydrocarbons ◽  
Solid Phase ◽  
Reversed Phase ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Matrix Interferences ◽  
Phase Liquid ◽  
Certified Values

Abstract Modification of a previously published method for determination of polynuclear aromatic hydrocarbons (PAHs) produces very clean seafood extracts in less than half the time. After alkaline digestion of the seafood, PAHs were partitioned into 1,1,2- trichlorotrifluoroethane. The resulting extract was cleaned up by solid-phase extraction on alumina, silica, and C18 adsorbents and then analyzed by gradient reversed-phase liquid chromatography with programmable fluorescence detection. Average recoveries of 12 PAHs [acenaphthene, anthracene, fluoranthene, pyrene, benz(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)- fluoranthene, benzo(a)pyrene, dibenz(a,h)anthracene, benzo(ghi)perylene, and indeno(1,2,3-cd)pyrene] from 5 different matrixes (mussels, oysters, clams, crabmeat, and salmon) spiked at low partsper- billion levels ranged from 76 to 94%. Estimated limits of quantitation ranged from 0.01 to 0.6 ppb PAHs in extracts that were free of matrix interferences. Results of analyses of a mussels standard reference material obtained from the National Institute of Standards and Technology were in good agreement with the certified values.

Micellar Solubilization of Polynuclear Aromatic Hydrocarbons In Coal Tar-Contaminated Soils

1995 ◽  
Vol 29 (12) ◽  
pp. 3015-3021 ◽  
Author(s):  
Ick Tae. Yeom ◽  
Mriganka M. Ghosh ◽  
Chris D. Cox ◽  
Kevin G. Robinson
Keyword(s):  
Aromatic Hydrocarbons ◽  
Contaminated Soils ◽  
Coal Tar ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Micellar Solubilization

Surfactant-Enhanced Bioremediation of Polynuclear Aromatic Hydrocarbons in Coke Waste

2018 ◽  
pp. 345-372
Author(s):  
John Sanseverino ◽  
Duane A. Graves ◽  
Maureen E. Leavitt ◽  
Satish K. Gupta ◽  
Richard G. Luthy
Keyword(s):  
Aromatic Hydrocarbons ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Enhanced Bioremediation

scholarly journals Micellar Solubilization of Polynuclear Aromatic Hydrocarbons in Coal Tar-Contaminated Soils

1996 ◽  
Vol 30 (6) ◽  
pp. 2104-2104 ◽  
Author(s):  
Ick Tae Yeom ◽  
Mriganka M. Ghosh ◽  
Chris D. Cox ◽  
Kevin G. Robinson
Keyword(s):  
Aromatic Hydrocarbons ◽  
Contaminated Soils ◽  
Coal Tar ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Micellar Solubilization

The influence of bile on the bioavailability of polynuclear aromatic hydrocarbons from the rat intestine

1986 ◽  
Vol 64 (9) ◽  
pp. 1214-1218 ◽  
Author(s):  
Anisur Rahman ◽  
J. A. Barrowman ◽  
A. Rahimtula
Keyword(s):  
Aromatic Hydrocarbons ◽  
Water Solubility ◽  
Water Layer ◽  
Dietary Lipids ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Structural Isomer ◽  
Micellar Solubilization ◽  
Unstirred Water Layer ◽  
Tricyclic Compound ◽  
Uptake Process

The mechanisms governing absorption of polynuclear aromatic hydrocarbons (PAHs) are important since these carcinogenic compounds occur as solutes in dietary lipids. These highly lipophilic compounds are well absorbed in the intestine. Bile salt micellar solubilization probably facilitates their transport across the unstirred water layer to the enterocytes. To study the role of bile in the intestinal absorption of PAHs, conscious rats with bile duct and duodenal catheters were given isotopically labelled 2,6-dimethylnaphthalene (DMN), phenanthrene, anthracene, 7,12-dimethylbenzanthracene (DMBA), and benzo[a]pyrene (BP); the recovery of radioactivity in bile and urine was measured. The PAHs were given intraduodenally in com oil with or without exogenous bile. Cumulative recovery of radiolabel in bile and urine over 24 h was used to assess the efficiency of absorption of the hydrocarbons with and without bile. The following values for absorption without bile (as percentage of absorption with bile) were obtained: DMN, 91.6%; phenanthrene, 96.7%; anthracene, 70.8%; DMBA, 43.4%; BP, 22.9%. The values for anthracene, DMBA, and BP were significantly less than 100% (P < 0.05); the values for DMN and phenanthrene were not significantly different from 100%. The dependence of the tricyclic compound anthracene (a structural isomer of phenanthrene) on bile for its absorption correlates with its lower water solubility. These results are consistent with the concept that the unstirred water layer presents a significant barrier to the absorption of this group of compounds and that micellar solubilization facilitates the uptake process.

Elucidation of substrate interaction effects in multicomponent systems containing 3-ring homocyclic and heterocyclic polynuclear aromatic hydrocarbons

2021 ◽  
Author(s):  
Prasenjit Ghosh ◽  
Suparna Mukherji
Keyword(s):  
Aromatic Hydrocarbon ◽  
Bacterial Growth ◽  
Aromatic Hydrocarbons ◽  
Interaction Effects ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Multicomponent Systems ◽  
Polynuclear Aromatic Hydrocarbon ◽  
Substrate Interaction

Bacterial growth and degradation experiments were conducted on carbazole (CBZ), fluorene (FLU) and dibenzothiophene (DBT) individually and in various mixture combinations using an efficient polynuclear aromatic hydrocarbon (PAH) degrading bacterial...

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