title: Influencing factors of disinfection byproducts formation during chloramination of Cyclops metabolite solutions.
abstract: Effects of reaction time, chlorine dosage, pH and temperature on the formation of disinfection byproducts (DBPs), were investigated during the chloramination of Cyclops metabolite solutions. The results showed that some species of DBPs like trichloromethane (TCM), dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA) could accumulate to their respective stable values with a progressive elevation in reaction time and monochloramine concentration. And 1,1,1-2-trichloropropanone (1,1,1-TCP) content decreased correspondingly with a continuous increase of reaction time. The amounts of chloral hydrate (CH), chloropicrin (TCNM), 1,1,1-TCP and DCAA firstly increased and then decreased with increasing monochloramine doses. Higher temperature resulted in a decrease of CH, dichloroacetonitrile (DCAN), 1,1-dichloropropanone (1,1-DCP), 1,1,1-TCP, DCAA and TCAA concentration. pH affected the formation of the different DBPs distinctly. TCM accumulateded with the increase of pH under 9, and DCAA, TCAA, CH and 1,1-DCP decreased continuously with increasing pH from 5 to 10, and other DBPs had the maximum concentrations at pH 6-7.
authors: Department of Environmental Science, Northeast Forestry University, Harbin 150040, China. Electronic address: sunxingbin1025@163.com.
authors: Xingbin
authors: X
authors: Sun
authors: Department of Environmental Science, Northeast Forestry University, Harbin 150040, China.
authors: Lei
authors: L
authors: Sun
authors: Department of Environmental Science, Northeast Forestry University, Harbin 150040, China.
authors: Ying
authors: Y
authors: Lu
authors: Department of Environmental Science, Northeast Forestry University, Harbin 150040, China.
authors: Jing
authors: J
authors: Zhang
authors: Department of Environmental Science, Northeast Forestry University, Harbin 150040, China.
authors: Kejing
authors: K
authors: Wang
mesh_terms: D000818:Animals; D002700:Chloramines / Q000737:chemistry*; D002725:Chloroform / Q000138:chemical synthesis; D033342:Copepoda / Q000378:metabolism; D003470:Culture Media / Q000737:chemistry*; D003999:Dichloroacetic Acid / Q000138:chemical synthesis; D004203:Disinfection; D014238:Trichloroacetic Acid / Q000138:chemical synthesis
chemical_list: D002700:Chloramines; D003470:Culture Media; D014238:Trichloroacetic Acid; D002725:Chloroform; D003999:Dichloroacetic Acid; C030816:chloramine
keywords: Cyclops metabolite solutions; DBPs; chloramination