title: A study on radiation technological degradation of organic chloride wastewater--exemplified by TCE and PCE.
abstract: This paper describes the potential of using gamma radiation technology to degrade trichloroethylene (TCE) and perchloroethylene (PCE) wastewater. The experimental method is divided into two parts: (1) using the gamma-ray to irradiate the TCE and PCE solution, the dose-rate is 10Gy/minute, the irradiation dosage is 0-2.5kGy and (2) self-making the UV irradiation system, the tube specification is 254nm and 6W, and turning on 8 tubes at the same time to make the irradiation. The efficiency of degradation ratio for gamma-ray is better than UV in the range of 0.1-250ppm; for example, as for the concentration of 0.1ppm, when TCE is degraded to D(90) and T(90), the gamma-ray only needed 46.7Gy and took about 4.67 minutes, but UV needed to take about 28.1 minutes. The dose-concentration equations of TCE and PCE are: TCE: y=44.58+8.832x, R(2)=0.999; and PCE: y=81.33+12.81x, R(2)=0.997. We verified that the radiation technology is able to effectively degrade the organic chlorine wastewater without yielding the secondary pollution, and the TCE and PCE that degraded by using gamma-ray will be reached US-EPA and Taiwan Effluent Standard (5ppb).
authors.affiliation: Institute of Radiological Science, Central Taiwan University of Science and Technology, No. 11, Buzih Lane, Beitun District, Taichung City 40601, Taiwan, ROC.
authors.forename: Sheng-Kai
authors.initials: SK
authors.lastname: Huang
authors.forename: Ling-Ling
authors.initials: LL
authors.lastname: Hsieh
authors.forename: Chia-Chieh
authors.initials: CC
authors.lastname: Chen
authors.forename: Po-Hsiu
authors.initials: PH
authors.lastname: Lee
authors.forename: Bor-Tsung
authors.initials: BT
authors.lastname: Hsieh
mesh_terms: D005720:Gamma Rays; D006843:Hydrocarbons, Chlorinated / Q000528:radiation effects*; D007220:Industrial Waste / Q000517:prevention & control; D013750:Tetrachloroethylene / Q000528:radiation effects; D014241:Trichloroethylene / Q000528:radiation effects; D014874:Water Pollutants, Chemical / Q000528:radiation effects*; D018508:Water Purification / Q000379:methods
chemical_list: D006843:Hydrocarbons, Chlorinated; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D014241:Trichloroethylene; D013750:Tetrachloroethylene