改性粘胶基活性碳纤维电极用于NaCl溶液电吸附脱盐的研究  

Electro-adsorption Desalination of NaCl Solution with Modified ACF Electrodes

作　　者：徐明[1] 吕荣湖[1] 

机构地区：[1]中国石油大学(北京)化学科学与工程学院,北京102249

出　　处：《化工环保》2008年第5期383-387,共5页Environmental Protection of Chemical Industry

基　　金：中国石油天然气集团公司应用基础研究项目(06A50302)

摘　　要：用 HNO_3、KOH、H_2O_2和 H_2O_2/UV 对粘胶基活性碳纤维(ACF)进行改性,并用扫描电子显微镜和 BET 的方法对未改性和改性后的 ACF 进行表征。以 ACF 为电极,直流稳压电源提供电压,在静态吸附装置中进行 NaCl溶液的电吸附脱盐实验。实验结果表明:对同种 ACF,随 NaCl 质量浓度的增加,吸附速率加快,ACF 吸附量增大;在相同 NaCl 质量浓度条件下,电压越高,ACF 吸附量越大。对各种 ACF 电吸附脱盐效果进行比较发现,KOH 改性 ACF 效果最好,HNO_3改性 ACF 效果最差。Activated carbon fiber （ACF） were modified by HNO3,KOH,H2O2 and H2O2/UV, and the un-treated ACF and modified ACF were characterized by scanning electron micrograph and Brunner-Emmett-Teller （BET） methods. Then, the electro-adsorption of NaCl solution was performed in the static adsorption apparatus with ACF electrodes and DC electrical source. The results indicate that ： For the same ACF, with the increasing of the NaCl concentration, the adsorption saturation rate is increased, and electro-adsorption extent is also increased; In the condition of the same NaCl concentration, the higher the voltage, the more the extent of electro-adsorption. The comparison of the electro-adsorption results with the different modified ACF show that the ACF modified by KOH has the best effect, while the ACF modified by HNO3 has the worst.

关 键 词：电吸附脱盐 改性粘胶基活性碳纤维 电极 扫描电子显微镜 孔径分布 

分 类 号：X703.1[环境科学与工程—环境工程]