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纸质活性炭纤维的制备及性能表征
张宗见,李嘉*,孙富升,吴恒亮,邝丰栾,刘世权
作者单位E-mail
张宗见 济南大学材料科学与工程学院济南250022  
李嘉* 济南大学材料科学与工程学院济南250022 ljn1964@gmail.com 
孙富升 济南大学材料科学与工程学院济南250022  
吴恒亮 香港中文大学物理系香港  
邝丰栾 香港中文大学物理系香港  
刘世权 济南大学材料科学与工程学院济南250022  
摘要:
通过KOH活化纸巾制备活性炭纤维, 比表面积高达1388 m2/g. 用制得的活性炭纤维作为吸附剂进行亚甲基蓝吸附实验研究,用Langmuir和Freundlich吸附模型分析实验数据,并研究pH值对活性炭纤维吸附亚甲基蓝影响. 活性炭纤维吸附速率更适于Pseudo-second-order动力学模型,相关系数高达0.998. 整个浓度变化区间Langmuir吸附等温线比Freundlich吸附等温线更适合实验数据. 所制备活性炭纤维对亚甲基蓝最大平衡吸附量为520 mg/g,实验发现,pH值越高活性炭纤维对亚甲基蓝吸附量越大.
关键词:  活性炭纤维,纸巾,微观结构,吸附,亚甲基蓝
DOI:10.1088/1674-0068/24/01/103-108
分类号:
基金项目:
Preparation and Characterization of Activated Carbon Fiber from Paper
Zong-jian Zhang,Jia Li*,Fu-sheng Sun,Dickon H. L. Ng,Fung-luen Kwong,Shi-quan Liu
Abstract:
Activated carbon fibers (ACFS) with surface area of 1388 m2/g prepared from paper by chemical activation with KOH has been utilized as the adsorbent for the removal of methy-lene blue from aqueous solution. The experimental data were analyzed by Langmuir and Freundlich models of adsorption. The effects of pH value on the adsorption capacity of ACFS were also investigated. The rates of adsorption were found to conform to the kinetic model of Pseudo-second-order equation with high values of the correlation coefficients (R>0.998). The Langmuir isotherm was found to fit the experimental data better than the Feundlich isotherm over the whole concentration range. Maximum adsorption capacity of 520 mg/g at equilibrium was achieved. It was found that pH played a major role in the adsorption process, higher pH value favored the adsorption of MB.
Key words:  Activated carbon fiber, Paper, Microstructure, Adsorption, Methylene blue