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- W2374902989 abstract "The article is to present the results of our batch experiments conducted to investigate the effect of bromate removal capacity by the virgin grander activated carbon(AC)and the zinc chloride treated activated carbon(ZC-AC).The comparative study between AC and ZC-AC has made us conclude that the treatment with ZnCl_2 can significantly improve the adsorption efficacy of AC.For example, the removal rate of BrO_3~-by AC and ZC-AC was found to be equal to 14.69% and 93.71%,respectively.The above said removal behavior can be explained by the two following facts.First,more micropores were formed after the treatment of ZnCl_2 because ZnCl_2 is well known to be able to promote the microporosity.Secondly,the presence of zinc oxide can be used to act as the adsorbent for bromate anions. Both ZC-AC and AC are characterized by scanning electronic microscopy(SEM),Brunauer Emmett Teller(BET)N_2-gas adsorption, surface area and X-ray diffraction(XRD).The removal of BrO_3~-by ZC _ AC is likely to remain efficient after a batch of four repeated experiments with slight decrease from 93.71 % to 14.69%.In addition,we have also studied the effect of pH,initial bromate concentration, co-existing anions on the bromate adsorbed by ZC-AC. Thus,the results of our batch experiments show that the capacity of BrO_3~-the adsorption for ZC _ AC can be increased to its maximum, that is,8.23 mg/g,when the initial BrO_3~-concentration is 1 000 μg/L.The coexisting anions can also inhibit the bromate from adsorbing to ZC-AC in the order of SO_4~(2-)PO_4~(3-)NO_3~-Cl~-F~- Br~-,while the pH value has also had significant effect on the removal of BrO_3~-by ZC-AC.Last of all,maximal percentage removal capability of bromate was found taking place between pH 6.4-9.8 for lower pH and higher basic pH was not favorable for the higher-rale bromate adsorption." @default.
- W2374902989 created "2016-06-24" @default.
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- W2374902989 date "2011-01-01" @default.
- W2374902989 modified "2023-09-26" @default.
- W2374902989 title "Bromate-removing from the drinking water by zinc chloride-treated activated carbon" @default.
- W2374902989 hasPublicationYear "2011" @default.
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