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利用沙柳制备活性炭纤维吸附材料的研究 被引量:7

PREPARATION OF ACTIVATEDCARBONFIBERS ADSORPTION MATERIALS FROM SALIXPSAMMOPHILA
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摘要 以沙柳纤维为原材料,采用正交试验KOH活化法制备纤维活性炭,利用N_2吸附表征沙柳活性炭纤维的孔结构。并将其用做钙离子的吸附材料,研究吸附剂投加量、时间、Ph、初始钙浓度等因素对钙离子去除效果的影响。结果表明,在KOH浓度为30%,浸渍比3:1,活化温度700℃,活化时间40min条件下制得活性炭纤维得率为45.6%,亚甲基蓝吸附值为9.5ml/0.1g,BET比表面积为672m_2/g,平均孔径为2.08nm;在ACF投加量15mg/L、PH为7.4、吸附时间10min、钙离子初始浓度300mg/L的条件下,活性炭纤维对钙离子的吸附量为12.3mg/g,去除率为36.9%。 Activated carbon fibers(ACF) used as adsorption materials toCalciumbased salix - psammophila via orthogonal experi- ments were prepared byKOH activation to optimizing the preparation process. The pore structure of activated carbon fibers were char- acterized by N2 adsorption - desorption. Factors including adsorbent dosage, contact time, ph and concentrations of Ca^2+ were inves- tigated to determine their effects on the adsorption of Ca^2+ by ACF. The results showed that the specific surface area, average pore di- ameter, the yield and the methylene blue adsorption value of the activated carbon fibers were 672m^2·g^-1, 2.08nm, 45.6% and 9.5 ml/0. 1 g, respectively. Here, the ratio of KOHto salix psammophila, KOH concentration, activation temperature and activation time were 3, 30%, 700 ℃and40 min, respectively. Besides, The adsorption , removal rate of Ca2+ were 12.3 mg/g and 36.9% , re- spectively. Here, the dosing quantity of ACF, ph, adsorption time, initial concentration of Ca2+ were 15mg/L, 7.4, 10min, 300mg/L, respectively.
出处 《内蒙古农业大学学报(自然科学版)》 CAS 2017年第1期82-88,共7页 Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金 内蒙古农业大学学生科技创新基金(DC 201539) 内蒙古自治区自然科学基金(2013MS0526)
关键词 沙柳 活性炭纤维 吸附材料 钙离子 Salix psammophila activated carbon fibers adsorption materials Calcium
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