Bromate removal by activated carbon adsorption:material selection and impact factors study |
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| Authors: | LIU Tong-mian ZHAO Zhi-wei CUI Fu-yi LIU Dong-mei WANG Huan ZHU Qi |
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| Affiliation: | 1. National Engineering Research Center of Urban Water Resources, School of Municipal & Environmental Engineering,Harbin Institute of Technology, Harbin 150090, China
2. National Engineering Research Center of Urban Water Resources, School of Municipal & Environmental Engineering,Harbin Institute of Technology, Harbin 150090, China;School of Chemistry and Material Sciences,Heilongjiang University, Harbin 150080, China |
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| Abstract: | Studies are conducted by using activated carbon process aimed at bromate removal from the raw water.Screening of activated carbon for bromate removal was performed in different activated carbons.GAC Merck possesses the highest iodine number and surface area,the highest number of basic groups and Vmeso,thereby contains the highest adsorption velocity and adsorption capacity.Impact factors of bromate removal on activated carbon were studied.Through static absorption experiments we studied the effect of adsorption time,pH,temperatare,anions and organic matter on bromate removal.With the decrease of pH,removal of bromate enhanced,suggests that it may be possible to increase bromate reduction through pH control.The increase of temperature will be favorable to adsorption of bromate on activated carbon.Anions and organic matter can inhibit the adsorption of bromate on activated carbon through competing active sites.Bromate removal can be improved by controlling key water quality parameters. |
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| Keywords: | bromate activated carbon adsorption impact factors |
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