Radiation removals of low-concentration halomethanes in drinking water.
Gamma radiation induced removals of four halomethanes, with low initial concentrations in drinking water were investigated. The results show that absorbed dose and solution pH are important factors in affecting halomethanes removals. High-absorbed dose and solution pH drive halomethanes removals. The reactions of halomethanes with e(aq)(-) play a crucial role in their removal processes. Halomethanes removal during the radiation follow a pseudo-first-order kinetics model. Gamma radiation results in a slight decrease in pH and TOC values of drinking water.
School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, PR China. guozbnuist@163.com
Zhaobing
Z
Guo
Zheng
Z
Zheng
Chunhui
C
Gu
Dengyong
D
Tang
D005720:Gamma Rays; D006846:Hydrocarbons, Halogenated / Q000528:radiation effects*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D022882:Trihalomethanes / Q000528:radiation effects; D014874:Water Pollutants, Chemical / Q000528:radiation effects*; D018508:Water Purification / Q000379:methods*; D014881:Water Supply
D006846:Hydrocarbons, Halogenated; D022882:Trihalomethanes; D014874:Water Pollutants, Chemical