摘要
研究了赤泥对水体中铅离子的吸附作用及赤泥的掺加量、吸附反应时间、溶液中Pb2+初始浓度、温度等因素对吸附作用的影响.结果表明,赤泥对铅离子有很好的吸附作用,吸附达到平衡的时间为2h.赤泥的掺加量为2g/L时,2h后吸附率可达99.6%;溶液初始Pb2+浓度越大,吸附率越小.但当把赤泥的掺加量固定为0.625g赤泥/100mgPb2+时,溶液的初始Pb2+浓度对吸附率影响较小.温度对吸附作用的影响较为显著,温度越高,吸附率越大,表明吸附为化学吸附.
Red mud as an byproduct during the processing of bauxite ore is used for the adsorption of lead in aqueous solution with different influence such as contact time,content of red mud and lead ion original in solution and temperature.The material exhibits good adsorption capability and the data follow both Langmuir and Freundlich models.The time for the adsorption balance is two hours.When red mud content in solution is 2 g/L,the adsorption ratio would be 99.6%.When red mud content in solution is 0.625 gram red mud per 100 mg lead ion,the lead ion original content changes because the adsorption ratio will decline with the rising of lead ion original content.The influence of temperature to the adsorption is obvious.The adsorption ratio will increase with the rising of temperature,indicating a chemistry adsorption
出处
《桂林工学院学报》
北大核心
2005年第2期245-247,共3页
Journal of Guilin University of Technology
基金
广西区教育厅资助项目(桂教科研[2003]22)
关键词
赤泥
铅离子
吸附作用
影响因素
red mud
lead ion
adsorption
influence factor
