山核桃壳活性炭对煤气洗涤水的吸附净化研究开发-化工进展.PDFVIP

化 工 进 展 ·2236 · CHEMICAL INDUSTRY AND ENGINEERING PROGRESS 2016 年第 35 卷第 7 期 研究开发 山核桃壳活性炭对煤气洗涤水的吸附净化 李郑鑫，谌伦建，叶云娜，徐冰，刘凯，刘建伟，张乐，苏毓 （河南理工大学材料科学与工程学院，河南焦作 454000 ） 摘要：以山核桃壳为原料，经磷酸浸渍、炭化和活化后制得活性炭，用SEM 和低温氮气吸附仪对活性炭进行表 征，并用该活性炭对模拟气化试验产生的煤气洗涤水进行吸附净化，考察活性炭对煤气洗涤水中挥发酚、TOC 、 COD 、氨氮和微量元素的净化效果。实验结果表明：用山核桃壳制备的活性炭具有介孔结构，其孔径主要分布 在 1～6nm 范围内，比表面积达 2959m2 3 /g ，孔容积为2.223cm /g ；该活性炭对挥发酚具有良好的吸附效果，经 45h 处理对挥发酚的去除率可达99.75% ，TOC 和COD 的去除率分别到达88.33%和65.73%；对氨氮和微量元素 也有很好的净化效果，经 15h 吸附后氨氮的去除率可达80.71%，微量元素的去除率均达99%以上。 关键词：活性炭；吸附；吸附剂；制备；修复 中图分类号：TQ 424.1 文献标志码：A 文章编号：1000 –6613 （2016 ）07 –2236 –07 DOI ：10.16085/j.issn.1000-6613.2016.07.041 Purification of gas washing water from underground coal gasification by activated carbon prepared from pecan shell LI Zhengxin ，CHEN Lunjian ，YE Yunna，XU Bing ，LIU Kai ，LIU Jianwei ，ZHANG Le ，SU Yu （School of Materials Science and Engineering，Henan Polytechnic University ，Jiaozuo 454000，Henan ，China ） Abstract ：Activated carbon with pecan shell as raw material ，after phosphate impregnation ， carbonization and activation，can be produced. The surface morphology and pore size distribution of the activated carbons were characterized by SEM and nitrogen adsorption measurement ．Furthermore ， gas washing water from model test of underground coal gasification was purified by pecan shell activated carbon. The removal effects of volatile phenol，TOC、COD、ammonia and some elements were investigated. Results showed that the specific surface area and total pore volume of prepared 2 3 activated carbon can be 2959m /g