硬硅钙石二次粒子对焦化废水氨氮的吸附性能  

STUDY ON ABSORBENT PERFORMANCE OF XONOTLITE TO AMMONIA NITROGEN IN COKING WASTEWATER

作　　者：韩剑宏[1,2] 柳黄燕 胡彩霞[1] 郝敏[2] 韩春鹏[4] 李艳峰 

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010 [2]北京科技大学,北京100083 [3]包头市排水产业产业有限责任公司,内蒙古包头014010 [4]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [5]青岛海洋热电化工设备有限公司,内蒙古包头014010

出　　处：《水处理技术》2009年第1期64-66,78,共4页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(50172009);内蒙古教育厅高校基金(NJ06143)

摘　　要：采用纳米级硬硅钙石二次粒子处理焦化废水中的氨氮(NH3-N)。结果表明,硬硅钙石的吸附平衡时间为180min,吸附等温线分别符合Freundlich和Langmuir方程,即为qe=0.4345Ce 0.3269和qe=0.0745Ce/1+0.0283Ce,计算单层吸附最大吸附量为2.6357mg·g-1。与活性炭相比,当投加量为2.5g·100mL-1时,NH3-N的平衡吸附量分别为1.35mg·g-1和1.60mg·g-1,去除率分别为45.55%和47.25%,一定程度上说明硬硅钙石的吸附性能优良。The xonotlite was used to treat ammonia nitrogen in the coking wastewater.Experimental results shown that xonotlite adsorption equilibrium time was 180 min,adsorption isotherm of xonotlite corresponds with Freundlich and Langmuir equation respectively. qe=0.4345Ce^0.3269 and qe=0.0745Ce/1＋0.0283Ce ,monolayer maximum NH3-N sorption capacity was 2.6357 mg.g^-1.Compared with activated carbon ,NH3-N adsorption capacity were 1.35mg.g^-1 and 1.60 mg·g^-1 respectively, removal rate were 45.55% and 47.25% when dosage was 2.5 g per 100 mL.

关 键 词：硬硅钙石二次粒子 吸附 焦化废水 NH3-N 

分 类 号：TQ424.2[化学工程]