Kinetic and degradation efficiency of trichloroethylene (TCE) via photochemical process from contaminated water

Dobaradaran, Sina and Nabizadeh, Ramin and Amir Hossein, Mahvi and Noroozi, Azita (2012) Kinetic and degradation efficiency of trichloroethylene (TCE) via photochemical process from contaminated water. African Journal of Biotechnology, 11. pp. 2006-2012.


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Trichloroethylene (TCE) is a common pollutant in groundwater and one of the priority pollutants listed by the U.S. EPA. With regard to concentration ranges in previous studies exceeding environmental levels by far with millimolar concentrations of TCE, this study deals with the degradation of TCE at micromolar concentrations by UV/H2O2. The degradation rate of TCE at different dilute solution levels, 30, 300 and 3000 g L-1 (0.22, 2.28 and 22.83 micromolar) at different initial pHs was examined. In addition, samples were taken from four contaminated wells to measure the degradation rate of TCE. It was shown that thedegradation rate of TCE increased due to the reduction of initial concentration in both aqueous solution and groundwater samples. The TCE degradation constants in groundwater samples increased by a factor of 2.05, while the initial concentration reduced from 1345.7 to 97.7 μg1 L-1. By increasing the molar ratios of H2O2 to TCE from 13 to 129, caused the degradation rates to increase in aqueous solutions. No harmful byproducts such as aloacetic acids (HAAs) were detected at these low levels of initial concentration of TCE during process. This study confirmed that application of UV/H2O2 process could be an effective method in treating contaminated groundwater by TCE at low concentrations.

Item Type: Article
Additional Information: indexer:Zahra Zeraatkar
Uncontrolled Keywords: Trichloroethylene, UV-radiation, UV/H2O2 process, groundwater remediation
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicin
Depositing User: Unnamed user with username karvarz2
Date Deposited: 19 Dec 2015 18:36
Last Modified: 19 Dec 2015 18:36

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