活性炭/粉煤灰处理含铜废水的研究  

Treatment of Cu-containing wastewater by activated carbon/coal fly ash

作　　者：黄晓丹[1] 薛美香[1] 李先学[1] 

机构地区：[1]莆田学院环境与生物工程学院,福建莆田351100

出　　处：《应用化工》2015年第6期995-999,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(21103095);莆田学院功能材料研究创新团队资助项目

摘　　要：采用活性炭/粉煤灰处理模拟含铜废水,考察pH、吸附时间、吸附温度、投加量、质量比、活性炭、粉煤灰粒径、铜离子浓度等对吸附效果的影响。结果表明,单纯粉煤灰的吸附效果较差,但100目的粉煤灰与100目的活性炭混合,其吸附效果接近于纯活性炭。活性炭/粉煤灰处理100 m L、30 mg/L模拟含铜废水的最佳吸附条件为:吸附时间3 h,pH 6,吸附温度45℃,活性炭/粉煤灰(质量比1∶1)投加量2.5 g,活性炭和粉煤灰粒径均为100目。在此条件下,铜离子去除率可达97.33%,处理后水中铜离子浓度(0.811 4 mg/L)低于国家二级排放标准(1.0 mg/L)。Cu-containing wastewater was treated by activated carbon/coal fly ash and the impact of solu- tion pH value, adsorption time, temperature, the dosage, the mass ratio, particle size of activated carbon and coal fly ash, and concentration of copper ions on the Cu adsorption capacity were investigated. Results showed that the adsorption effect of copper ion by coal fly ash alone was poor,but when 100 mesh coal fly ash mixed with 100 mesh activated carbon, the adsorption effect was closed to pure activated carbon. 100 mL 30 mg/L simulated Cu-containing wastewater the best adsorption conditions of activated carbon/ coal fly ash were pH value of 6, the 2.5 g dosage of activated carbon/coal fly ash（ mass ratio of 1 ： 1 ）, ac- tivated carbon/coal fly ash particle size of 100 mesh after 3 h contacting at 45℃. Under these conditions, the removal rate of copper ion can reach 97.33% ,and the copper ions concentration（0. 811 4 mg/L） in the treated water were lower than the national emission standards（ 1.0 mg/L）.

关 键 词：活性炭 粉煤灰 吸附 铜离子去除率 

分 类 号：TQ426.8[化学工程] O643.32[理学—物理化学]