影响粉煤灰基质滤料吸附水中六价铬的关键因素研究  

Research on Key Factors that Influence Adsorption of Hexavalent Chromium on Coal Fly Ash Filter Material

作　　者：佟银子[1] 陈冷[2,3] 荆肇乾[1] 黄新[1] 王丽娜[1] 

机构地区：[1]南京林业大学土木工程学院,江苏南京210037 [2]浙江大学控制科学与工程学系,浙江杭州310027 [3]杭州市水业集团有限公司,浙江杭州310009

出　　处：《化工技术与开发》2011年第1期46-48,共3页Technology & Development of Chemical Industry

基　　金：江苏省省级环保科研项目(2009005);江苏省高校自然科学研究资助项目(08KJB610003);2009年江苏省高等学校大学生实践创新训练计划项目

摘　　要：通过粉煤灰基质滤料对六价铬进行静态吸附的正交实验,研究了滤料投加量、吸附时间、温度、初始浓度对六价铬吸附效果的影响。结果表明,该滤料对水中的六价铬具有一定的吸附能力,滤料的投加量和吸附时间对六价铬去除效果影响较大,温度和浓度对六价铬的去除效果影响较小。随着滤料投加量增加,吸附率提高的同时单位滤料吸附量下降。随着吸附时间的延长,吸附率和单位吸附量均升高并在90min后趋于稳定。By carrying out the orthogonal static experiment to the adsorption of hexavalent chromium on fly ash filter material,the influence of dosage,adsorption time,temperature and initial concentration on hexavalent chromium adsorption was investigated.The results showed the fly ash filter material had good absorption capacity to hexavalent chromium.The filter material dosage and adsorption time had greater impact on the adsorption of hexavalent chromium than temperature and concentration.With the increase in filter dosage,the removal ratio of hexavalent chromium improved and unit adsorption capacity decreased.When adsorption time was extended,the removal ratio and unit adsorption capacity rised gradually and stabilized after 90min.

关 键 词：粉煤灰 六价铬 吸附 正交实验 

分 类 号：X703[环境科学与工程—环境工程]