木麻黄树皮对亚甲基蓝吸附性能的研究  

Adsorption of methylene blue by casuarina equisetifolia bark

作　　者：江静[1] 高逸婷[1] 卢玉栋[1] 吴宗华[1] 

机构地区：[1]福建师范大学化学与材料学院,福州350007

出　　处：《中国科技论文在线》2010年第6期481-484,共4页

基　　金：福建省教育厅科技项目资助(JB06078);福建师范大学横向项目(DH-584)

摘　　要：利用木麻黄树皮对水中亚甲基蓝进行吸附,探讨了吸附剂用量、温度和亚甲基蓝初始质量浓度等因素对木麻黄树皮吸附亚甲基蓝性能的影响,并分析了木麻黄树皮对亚甲基蓝吸附的动力学和热力学。研究结果表明,木麻黄树皮对亚甲基蓝具有较好的吸附效果,在288K下最大吸附量可达26mg/g。吸附剂用量0.2g,温度318K,亚甲基蓝质量浓度375mg/L时吸附效果最好。木麻黄树皮对亚甲基蓝的吸附过程是1个自发的吸热反应过程,吸附等温数据可用Freundlich方程描述,对于Langmuir方程,数据不与之拟合。The casuarina bark was used to absorb the methylene blue in the water.The absorption performance was disscused with the factors which were sorbent dosage,temperature and initial mass concentration of the methylene blue.The absorption kinetics and themodynamics of casuarina bark to absorb the methylene blue were also analyzed in this paper.The results showed that the casuarina bark had a good absorption at methylene blue.The maximum adsorption capacity of the biosorbent were 26.00 mg/g at 288 K.And the best adsorption conditions were：the sorbent dosage 0.2 g,the temperature 318 K,the mass concentration of methylene blue 375 mg/L.The results indicated that the overall adsorption process was endothermic and spontaneous.Absorption isotherm data can be described by the equation of Freundlich,but as to the equation of Langmuir,the data was not fitting to it.

关 键 词：木麻黄树皮 亚甲基蓝 吸附 等温线 

分 类 号：X791[环境科学与工程—环境工程]