基于酸改性的半焦对染料废水的吸附性能研究  

Adsorption ability of modified semicoke for dye waste water

作　　者：翟祥[1] 高晓明[1] 宜沛沛 付峰[1] 

机构地区：[1]延安大学化学与化工学院陕西省化学反应工程重点实验室,陕西延安716000

出　　处：《洁净煤技术》2015年第4期107-111,共5页Clean Coal Technology

基　　金：国家自然科学基金资助项目(21406188);陕西省科技厅资助项目(2014K10-04);延安市科技局资助项目(2012KG-09)

摘　　要：为制备高效吸附材料,采用化学活化法对延安子长煤低温热解的半焦进行改性,并进行X射线衍射(XRD)、N2等温吸附、扫描电子显微镜(SEM)表征。以罗丹明B、酸性品红为目标物,采用吸附剂添加量、溶液p H、吸附时间等为考察参数,研究了酸改性半焦对罗丹明B、酸性品红模拟染料废水的吸附性能,探索了酸改性半焦对罗丹明B、酸性品红的吸附动力学行为。结果表明:改性半焦对2种染料有良好的吸附性能,准二级动力学模型的相关系数在0.999以上,模型饱和吸附量与实验值相近,很好地描述了2种染料在酸改性半焦上的吸附行为。In order to prepare an efficient adsorption material,the semicoke prepared from Yan＇an Zichang coal at low temperature was modified by chemical activation. The structure was characterized by XRD,Nitrogen adsorption isotherms and SEM. The adsorption ability of modified semicoke was investigated by changing the addition of semicoke,solution p H,adsorption time using rhodamine B and acid fuchsin as targets. The adsorption kinetics was also studied. The results showed that the correlation coefficient of pseudo-second-order model was above 0. 999 which indicated the saturated adsorption of model was close enough to the experimental results. The model could describe the adsorption accurately.

关 键 词：改性半焦 水热活化 染料废水 吸附 

分 类 号：X172[环境科学与工程—环境科学]