Izvorni znanstveni članak
https://doi.org/10.15255/CABEQ.2018.1465
Surfactant-enhanced Bioremediation of n-Hexadecane-contaminated Soil Using Halo-tolerant Bacteria Paenibacillus glucanolyticus sp. Strain T7-AHV Isolated from Marine Environment
S. Ghafari
; Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
Z. Baboli
; Department of Environmental Health Engineering, Behbahan Faculty of Medical Sciences, Behbahan, Iran
A. Neisi
; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
S. A. Mirzaee
; Department of Environmental Health Engineering, School of Health, Ilam University of Medical Sciences, Ilam, Iran
R. Darvishi Cheshmeh Soltani
; Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
R. Saeedi
; Workplace Health Promotion, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Health, Safety and Environment, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
M. Abtahi
; Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
S. Jorfi
; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Sažetak
A halo-tolerant bacterial strain Paenibacillus glucanolyticus sp. strain T7-AHV isolated from marine environment was used for bioremediation of n-hexadecane-contaminated soil. Soil/water ratio, initial inoculums volume, surfactant addition, n-hexadecane concentration, and salinity were investigated. The possibility of biosurfactant production by isolated strain was also studied, and the results demonstrated that it was not a biosurfactant producer, based on measurement of the surface tension of culture broth. Both tween 80 and rhamnolipid enhanced the biodegradation of n-hexadecane significantly up to 44 and 46 %, respectively. A biodegradation rate of 39.7 % was observed at salinity
level of up to 2 %, and the biodegradation efficiency decreased significantly at higher salinity concentrations. A natural hydrocarbon-contaminated soil sample with total petroleum hydrocarbon (TPH) concentration of 1437 mg kg–1 was subjected to bioremediation using the selected conditions of operational parameters, and a biodegradation rate of 22.1 % was obtained.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Ključne riječi
bioremediation; soil contamination; n-hexadecane; Paenibacillus glucanolyticus sp. strain T7-AHV; surfactant
Hrčak ID:
218888
URI
Datum izdavanja:
10.4.2019.
Posjeta: 1.265 *