亚甲基蓝和Ag^＋在活性炭纤维上的共吸附

研究了水蒸汽活化和化学活化两类活性纤维（ＡＣＦ）对水溶液中单组分亚甲基蓝和Ａｇ（ＮＨ３）＾＋２以及两者共存时的吸附特征，ＡＣＦ对水溶液中亚甲基蓝的吸附量主要取决于其表面积和孔分布，ＡＣＦ对Ａｇ＾＋的还原一吸附能力则主要取决其表面的化学性质，相同条件下，化学活化的ＡＣＦ对银离子的还原吸附量（３００ｍｇ．ｇ＾－１）比水蒸活化的ＡＣＦ的还原－吸附量（１００ｍｇ．ｇ＾－１）高，溶液中亚甲基蓝的存在显著改变

THE COADSORPTION OF Ag~+ AND METHYLENE BLUE ON ACFs

Single component adsorption and coadsorption behavior of Ag(NH3); and methylene blue on two kinds of ACFs, aCtivated with steam and ZnCl2 respectively, were studied. The adsorption of methylene blue on these two kinds of ACFs could be described with Langmuir equation quite well.The amounts of methylene blue adsorbed on ACFs mainly depended on the specific sudece area and pore size distribution of ACF. The reduction-adsorption amount of Ag by ACFs however, depend on the sudece chemistry of ACFs. It was shown that the reduction-adsorption amounts of Ag by ZCSACF or ZCSACF which was activated by ZnCl2 were about 300mg.g-1 carbon, which was 3 times of that by SACF activated by steam. The reduction-adsorption capacities of Ag by SACF was enhanced by the peence of methylene blue. The reduction-adsorption amount of Ag on SACF at the presence of methylene blue could reach as high as 600mg.g-1 carbon.