title: [Analysis of UV-visible absorption spectrum on the decolorization of industrial wastewater by disinfection].
abstract: The UV-Visible absorption spectrum of industrial wastewater was explored to introduce a substituting method determining the color of water, and to compare the decolorization efficacy of different disinfectants. The results show that the visible absorption spectrum(350-600 nm), instead of ultraviolet absorption spectrum, should be applied to characterize the color of wastewater. There is a good correlation between the features of visible absorption spectrum and the true color of wastewater. Both ozone and chlorine dioxide has a better decolorization performance than chlorine. However, the color of chlorine dioxide itself has a negative effect on decolorization. The changes in the features of visible absorption spectrum effectively reflect the variations in the color of wastewater after disinfection.
authors.affiliation: School of Environment and Chemical Engineering, Shanghai University, Shanghai 200444, China. huangxin_china@163.com
authors.forename: Xin
authors.initials: X
authors.lastname: Huang
authors.forename: Long-Yong
authors.initials: LY
authors.lastname: Wang
authors.forename: Nai-Yun
authors.initials: NY
authors.lastname: Gao
authors.forename: Wei-Guo
authors.initials: WG
authors.lastname: Li
mesh_terms: D017606:Chlorine Compounds / Q000737:chemistry; D003116:Color; D004203:Disinfection / Q000379:methods*; D007220:Industrial Waste; D010087:Oxides / Q000737:chemistry; D010126:Ozone / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D017606:Chlorine Compounds; D007220:Industrial Waste; D010087:Oxides; D010126:Ozone; D062065:Wastewater; C025109:chlorine dioxide