摘要
以蒙脱石、粉煤灰为原料,添加一定量的粘结剂混合造粒制成复合颗粒吸附剂,用于处理含Zn2+废水,实验研究了吸附反应时间、吸附剂投加量、废水初始浓度及介质pH值对吸附性能的影响。研究结果表明:蒙脱石/粉煤灰复合颗粒吸附剂的最佳吸附工艺条件为:在室温下,吸附反应时间50 min,吸附剂投加量5.0 g/L,初始浓度40 mg/L,溶液pH值为5。在此条件下处理含Zn2+废水,吸附去除率为95.77%,处理后残余浓度为1.69 mg/L,达到国家一级排放标准(2.0 mg/L)。
Granulated absorbent were prepared by using the mixture of montmorillonite,fly ash and a certain amount of cementing agent.The granulated absorbent was used to treat the waste water containing Zn^2＋.The adsorption reaction time,the initial concentration,the amount of absorbent,and the medium pH were investigated.The experimental results showed that the optimal technological conditions of adsorption were as follows： At the room temperature,the adsorption reaction time was 50 min,the amount of absorbent was 5.0 g/L,the initial concentration was 40 mg/L,and the medium pH was 5.When granulated absorbent was used to treat the wastewater containing zinc of the initial concentration 40 mg/L under the above optimum conditions exhibited,the adsorption ratio was 95.77% and the remaining concentration was 1.69 mg/L,which reached the national first-level effluent standard（2.0 mg/L）.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第4期173-176,共4页
Journal of Wuhan University of Technology
基金
教育部科学技术研究重点项目(02052)
关键词
蒙脱石
粉煤灰
吸附
锌
montmorillonite
fly ash
adsorption
Zinc
