Removal of Bromate from Water by Silver-Supported Activated Carbon

Batch experiments were conducted to make a comparison in bromate removal between the silver-supported activated carbon (silver-AC) and virgin grander activated carbon(GAC). The probable mechanism of the better behavior of silver-AC was discussed. The effect of initial bromate concentration, pH and c...

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Published in2009 International Conference on Energy and Environment Technology Vol. 2; pp. 687 - 690
Main Authors Wen-yi Dong, Zi-jun Dong, Rong-shu Zhu, Yang Dong, Feng Ouyang, Hong Du
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2009
Subjects
adsorption
bromate
Cancer
Chemicals
Gastrointestinal tract
Humans
Microorganisms
Neoplasms
reduction
Rodents
Silver
silver-supported activated carbon
Testing
Water storage
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Summary:Batch experiments were conducted to make a comparison in bromate removal between the silver-supported activated carbon (silver-AC) and virgin grander activated carbon(GAC). The probable mechanism of the better behavior of silver-AC was discussed. The effect of initial bromate concentration, pH and co-exist anions were also investigated in the study. Results showed that the removal efficiency of bromate increased about 25% by using silver-AC, a much better removal. Bromate reduction by silver-AC increases as the solution pH decreases. And the bigger the initial concentration was, the larger of BrO 3 - removal capacity by silver-AC was. Cl - , F - and Br - had a slight effect on the removal of BrO 3 - while SO 4 2- , CO 3 2- , NO 3 - and PO 4 3- showed a stronger influence. The affinity of the anions for silver-AC sites decreased in the following order CO 3 2- >PO 4 3- >SO 4 2- > NO 3 - >Br - >Cl - >F - when the co-exist anion concentration was 10 mg/L.
ISBN:9780769538198
0769538193
DOI:10.1109/ICEET.2009.404