污泥棉花壳吸附剂处理亚甲基蓝的研究  

Study on Sludge Cotton Shell Adsorbent of Methylene Blue

作　　者：张惠灵[1] 卢雪丽[1] 俞琴[2] 任大军[1] 周杨[1] 王春杏 刘梦佳[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]武钢能源动力公司供水厂,湖北武汉430081

出　　处：《环境科学与技术》2015年第10期124-128,174,共6页Environmental Science & Technology

基　　金：国家科技支撑计划:钢铁联合企业焦化废水处置分质回用技术及应用(子项)(2012BAC02B04)

摘　　要：以城市生活污水厂脱水污泥和棉花壳为原料,氯化锌为活化剂制备复合吸附剂(SC)。用SC吸附处理亚甲基蓝废水,研究时间、温度、pH、投加量、初始浓度等对吸附效果的影响,并借助比表面积BET、扫描电镜(SEM)等现代分析方法分析SC的微观性质。结果表明SC吸附染料的性能较好,BET比表面积为415.04 m^2/g,说明吸附剂孔隙发达,这与SEM结果相吻合。SC对染料的吸附符合准二级动力学方程模型,对染料的吸附机理主要为物理吸附。SC was prepared from dewatered sludge and cotton shells,by using ZnCl2 as activator. Using SC to adsorb methylene blue,and the effect of time,temperature,p H,dosage,initial concentration on the adsorption was studied,SC microscopic properties were analyzed with the specific surface area BET and scanning electron microscopy（SEM）. The results showed that SC had good performance adsorption on dye,and BET surface area of 415.04m^2/g was coinciding with the results of SEM. Adsorbent SC reaction dynamics of dye adsorption conformed to the pseudo secondary features,with adsorption mechanism of dye mainly as physical process.

关 键 词：城市污泥 棉花壳 吸附剂 亚甲基蓝 吸附机理 

分 类 号：X703[环境科学与工程—环境工程]