Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reduction of disinfection byproduct formation by an oxidative coupling reaction with birnessite
Abstract This study investigates the reduction of Disinfection Byproduct (DBP) formation from Natural Organic Matter (NOM) surrogates, resorcinol and phloroglucinol by oxidative coupling reaction induced by birnessite. Birnessite was introduced into an aqueous solution of resorcinol or phloroglucinol under various birnessite dose, pH, and ionic strength. After reaction, a part of the dissolved fraction was characterized by UV/Vis spectroscopy, fluorescence spectroscopy, size exclusion chromatography. Another part was reacted with sodium hypochlorite to investigate the DBP formation and chlorine consumption. Polymerization of resorcinol and phloroglucinol by an oxidative coupling reaction was verified by spectroscopic analysis and molecular weight distribution analysis. Total DBP and chloroform formation from the NOM surrogates greatly decreased after reaction with birnessite. Chloroform formation further decreased when pH and ionic strength remained low during oxidative coupling. Meanwhile, the fraction of chloroacetic acids of total DBPs increased after the coupling of phenolic compounds due to increases in intermediates containing a carbonyl group. This study would contribute to establish a new and efficient alternative for DBPs formation control.
Reduction of disinfection byproduct formation by an oxidative coupling reaction with birnessite
Abstract This study investigates the reduction of Disinfection Byproduct (DBP) formation from Natural Organic Matter (NOM) surrogates, resorcinol and phloroglucinol by oxidative coupling reaction induced by birnessite. Birnessite was introduced into an aqueous solution of resorcinol or phloroglucinol under various birnessite dose, pH, and ionic strength. After reaction, a part of the dissolved fraction was characterized by UV/Vis spectroscopy, fluorescence spectroscopy, size exclusion chromatography. Another part was reacted with sodium hypochlorite to investigate the DBP formation and chlorine consumption. Polymerization of resorcinol and phloroglucinol by an oxidative coupling reaction was verified by spectroscopic analysis and molecular weight distribution analysis. Total DBP and chloroform formation from the NOM surrogates greatly decreased after reaction with birnessite. Chloroform formation further decreased when pH and ionic strength remained low during oxidative coupling. Meanwhile, the fraction of chloroacetic acids of total DBPs increased after the coupling of phenolic compounds due to increases in intermediates containing a carbonyl group. This study would contribute to establish a new and efficient alternative for DBPs formation control.
Reduction of disinfection byproduct formation by an oxidative coupling reaction with birnessite
Jee, Sang-Hyun (Autor:in) / Kim, Do-Gun (Autor:in) / Jeong, Kwon (Autor:in) / Ko, Seok-Oh (Autor:in)
KSCE Journal of Civil Engineering ; 17 ; 1241-1250
17.08.2013
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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