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- W2359133670 abstract "The activated carbon was modified by impregnation with NaOH and the mixture of NaOH and sulfonated cobalt phthalocyanine(CoPcS),and its performance of removing low-concentration HCN was studied.The results show that,in the modification process,increasing the NaOH concentration properly can enhance the adsorption of HCN on the modified activated carbon.When the NaOH concentration used in impregnation is 10%(wt),the optimum conditions for preparing modified activated carbon with NaOH and CoPcS are CoPcS/NaOH mass ratio of 0.15 mg·g-1 and the cremation temperature of 350℃.The suitable conditions for the HCN adsorption of the prepared modified activated carbon were found,which are volume space velocity of 923 h-1,oxygen content of 2% and adsorption temperature of 90℃.The specific surface and the pore structure properties of the modified activated carbons were tested by N2 adsorption experiments.Compared with the virgin activated carbon,the specific area and pore volume of the impregnated ones are reduced,while the HCN adsorption ability increases.The N2 adsorption tests also show that,after HCN adsorption,the specific area and pore volume of the modified activated carbon increase and which are mainly caused by the increase of the micro pores.These results indicate that the HCN is chemically adsorbed at the pores of modified activated carbon with medial or macro size,and the adsorbed HCN could swell the micropores.It also indicates that the adsorption mechanism of micropore filling and covering could be excluded." @default.
- W2359133670 created "2016-06-24" @default.
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- W2359133670 date "2010-01-01" @default.
- W2359133670 modified "2023-09-22" @default.
- W2359133670 title "Adsorption of Low-Concentration HCN on Impregnated Activated Carbon" @default.
- W2359133670 hasPublicationYear "2010" @default.
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