摘要
通过酸改性和负载镧改性,制备出一种载镧活性炭吸附材料。采用静态吸附试验研究了该材料对水中氟离子的吸附行为。研究结果表明,该载镧活性炭吸附材料对氟离子的去除率可达到96%以上,较低的pH值有利于吸附,吸附行为符合Langmuir型吸附等温式,最大吸附容量为21.4 mg/g。
Lanthanum（Ⅲ）-loaded activated carbon is prepared in the current study through acid modification followed by lanthanum impregnation.The adsorption behavior of the material to fluoride ion in water are studied through static adsorption experiment.The result shows,the solution pH values had a major impact on fluoride adsorption with optimal removal（above 96%） observed in acidic solutions,the adsorption isotherm could be well fitted by the Langmuir equation,and the estimated maximum uptake capacity is 21.4 mg/g.
出处
《河南化工》
CAS
2011年第19期36-38,共3页
Henan Chemical Industry
关键词
除氟
活性炭
改性
吸附
defluoridation
activated carbon
modification
adsorption
