松树锯末对亚甲基蓝(MB)的吸附研究  

Study on adsorption of methylene blue(MB) by sawdust

作　　者：孙杰[1] 田奇峰[1] 

机构地区：[1]中南民族大学环境工程研究所,武汉430073

出　　处：《环境工程学报》2012年第2期419-422,共4页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(21007018);湖北省自然科学基金资助项目(2008CDB400);武汉市科技计划项目(201051824567)

摘　　要：采用松树锯末以及改性松树锯末对模拟废水中的亚甲基蓝进行吸附实验研究。研究结果表明,当亚甲基蓝的初始浓度为50 mg/L、pH为6、锯末投加量为1 g/L时,改性前后的锯末对亚甲基蓝的吸附量最大,分别为29.9 mg/g和60.6 mg/g。同时,对改性前后的锯末做了吸附等温线拟合及动力学研究。结果表明,吸附等温线均能很好地符合Langmuir吸附模式,吸附过程符合拟二级动力学方程。Adsorption of methylene blue（MB） by sawdust（SD） and modified sawdust（MSD） was studied in simulated wastewater.The results indicated that the maximum adsorption capacities were 29.9 mg/g and 60.6 mg/g,respectively before and after modification with initial MB concentration of 50 mg/L,pH of 6 and adsorbent concentration of 10 g/L.At the same time,the adsorption isothermal cure and kinetic equation were simulated to illustrate the adsorption effect.The isotherm indicated that the adsorption process followed the Langmuir adsorption isotherm.Kinetic studies showed that the adsorption process was found to follow pseudo-second-order kinetics equation.

关 键 词：松树锯末 亚甲基蓝(MB) 改性 吸附 

分 类 号：X506[环境科学与工程—环境工程]