期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 224, 期 2, 页码 347-350出版社
ACADEMIC PRESS INC
DOI: 10.1006/jcis.2000.6713
关键词
activated carbon fiber; reduction ability; iron ion; adsorption and reduction mechanisms
The mechanisms of adsorption of iron(II) ion, iron(III) ion, and reduced iron(III) ion onto an activated carbon fiber and the ability of carbon fibers to reduce iron(III) ion were investigated on the basis of the amounts of iron ion adsorbed. The amount of iron(II) ion adsorbed onto the activated carbon fiber increased with increasing adsorption temperature. Iron(II) ion was more easily removed by the activated carbon fiber than iron(III) ion, Iron(III) ion was adsorbed onto the activated carbon fiber after being reduced to iron(II) ion. The reduction ability of A-20 was stronger than that of A-10 because the hydrophilic groups of A-20 were larger than those of A-10. It is concluded that the activated carbon fiber has a reduction effect on iron(III) ion and that the reduction effect of the activated carbon fiber depended on the number of hydrophilic groups on the activated carbon fiber. (C) 2000 Academic Press.
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