摘要
利用改性粉煤灰的吸附混凝作用,研究了从含阴离子表面活性剂LAS的模拟废水中去除LAS的一般规律·结果表明,以CaO为改性剂的粉煤灰对LAS废水具有良好的吸附性能,其吸附性能在实验浓度范围内符合Langmuir吸附规律·在含LAS为20～120mg/L的模拟废水中,改性粉煤灰的最佳用量为20～25g每200mL废水,吸附时间为40min,粉煤灰粒径为74～83μm,pH为9～13的实验条件下,LAS的去除率最高可达98%以上·
Utilizing the adsorption/coagulation effect of modified fly ash to treat the wastewater containing the anionic surfactant LAS was investigated. The results showed that fly ash modified by the modifier CaO was effective to adsorb the environmental harmful substance LAS when LAS concentration is 20～120mg/L in the wastewater of which the pH value is 9～13 and the amount of modified fly ash with particle size 74～83μm is 20～25g per 200ml wastewater. The fact comforms to Langmuir theory of adsorption. The LAS removal rate can be up to over 98% on the conditions mentioned above.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第4期401-404,共4页
Journal of Northeastern University(Natural Science)
基金
辽宁省教育厅基金资助项目(200293080).
