Hydrous manganese dioxide adsorbing humic acid: Controlling trihalomethane formation - 文章详情页

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EI Scopus

摘要：

Effectiveness　of　hydrous　manganese　dioxide　(δMnO2)　adsorbing　humic　acid　under　different　conditions　and　its　subsequent　effects　on　trihalomethane　(THMs)　formation　have　been　studied.　Humicacid　removal　increases　with　higher　pH　and　residual　TOC　decreases　from　3.63　mg/L　to　1.68　mg/L　with　pH　increasing　from　5.5　to　8.5　at　3.0　mg/L　δMnO2;　δMnO2　exhibits　good　potential　of　removing　humic　acid　and　the　adsorbing　potential　as　high　as　1　mg　TOC/mg　δMnO2　is　achieved;　the　fractional　reduction　of　humic　acid　with　higher　molecular　weight　is　about　30%　higher　than　that　with　lower　molecular　weight.　δMnO2　adsorption　obviously　reduces　subsequent　THMs　formation;　more　significant　THMs　formation　reduction　is　observed　for　humic　acid　with　higher　molecular　weight.　δMnO2　adsorption　is　an　important　factor　that　contributes　to　humic　acid　removal　and　THMs　formation　reduction　in　permanganate　pre-oxidation　process.

关键词：

Molecular weight pH Oxidation Manganese compounds Acids Adsorption

作者机构：

[ 1 ] [Liu, Ruiping]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 2 ] [Nan, Jun]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 3 ] [Li, Xing]College of Civil Engineering and Architecture, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Yang, Yanling]College of Civil Engineering and Architecture, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Xia, Shengji]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 6 ] [Li, Guibai]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

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liuruiping@hit.edu.cn

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