文献类型：期刊文献

中文题名：三种活性炭对吲哚和吡啶的吸附性能

英文题名：ADSORPTION PERFORMANCE OF THREE DIFFERENT ACTIVATED CARBONS FOR INDOLE AND PYRIDINE

作者：徐生盼[1];陈庆军[1];梁晓怿[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2009

卷号：35

期号：9

起止页码：19

中文期刊名：水处理技术

外文期刊名：Technology of Water Treatment

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(50672025);国家高技术研究发展计划(863)项目(2007AA052311)

语种：中文

中文关键词：活性炭;吸附性能;吲哚;吡啶

外文关键词：activated carbon; adsorption performance; indole; pyridine

摘要：考察了3种活性炭-沥青基球形活性炭(PSAC)、煤质柱状炭(EAC)和椰壳颗粒炭(GAC)对水中吲哚和吡啶的吸附效果,测定了3种活性炭对吲哚和吡啶的吸附等温线和吸附动力学曲线。结果表明,3种活性炭对吲哚的去除率都能达到100%;PSAC和EAC对吡啶的去除率约为82%,GAC对吡啶的去除率约为92%;PSAC对吲哚和吡啶的吸附速率最大。活性炭的吸附性能由活性炭结构和吸附质分子性质所决定。微孔越丰富,吸附性能越好;中孔越多,吸附质分子的传质阻力越小,吸附速率越大;吸附质分子在水中的溶解度越小,活性炭的亲和力越强,吸附量越大,吸附效果越好。3种活性炭对吲哚和吡啶的吸附符合Freundlich公式,并确定了公式参数,Frendlich公式中的参数a越大,1/n越小,则活性炭吸附容量越大;a越大,活性炭的吸附速度越快。
Adsorption ofindole and pyridine in aqueous phase onto activated carbons （ACs） having different textural and surface properties has been considered. Three types of ACs were used： two were commercial wastewater treatment ACs namely coal-based extruded activated carbon （EAC） and coco-based granular activated carbon （GAC）, the other was pitch-based spherical activated carbons （PSAC） made oven. The adsorption isotherms and dynamic adsorption curves of indole and pyridine were investigated. Fretmdlich equation was tested for modeling the adsorption isotherms at equilibrium, from which the parameters a and n of the equation were determined. Results showed that the removal rates ofindole can reach to 100% for all the ACs tested. The removal rates ofpyridine were both about 82% when used PSAC and EAC, While a higher removal rate was 92% when used GAC. PSAC had the highest adsorption rate for both indole and pyridine because of the highest mesopore volume. Besides, it was concluded that the equilibrium adsorption capacity of the ACs was influenced by pore structure, BET surface area of the ACs and the solubility of the solute. The larger the mesopore volume, the higher the adsorption rate was. And the larger the micropore volume, a and n, the larger the adsorption capability was.