摘要
[目的]探索纯蒙脱石处理含锌废水的因素与效果。[方法]从蒙脱石提纯入手,进行纯蒙脱石处理含锌废水的试验研究,探讨纯蒙脱石对含锌废水处理效果的影响因素,确定纯蒙脱石去除水中Zn2+的工艺条件,并研究纯蒙脱石对Zn2+的吸附等温曲线。[结果]纯蒙脱石对含锌废水处理效果主要受振荡速度、吸附时间、溶液pH值和投加量等因素影响。温度为30℃时纯蒙脱石对Zn2+的吸附等温曲线更符合Langmuir方程和BET方程,相关系数均为0.986 9,最大吸附容量39.00 mg/g。在该试验条件下,纯蒙脱石对水中Zn2+(20ml,Zn2+浓度均为50 mg/L)达到最佳去除效果时的工艺条件为:振荡速度150 r/min,吸附时间60 min,溶液pH值6.10,此条件下Zn2+去除率达到85.3%。[结论]该研究为应用蒙脱石开发污水处理新材料提供了科学依据。
[Objective] The study aimed to explore the factors and effects on treating Zn-containing wastewater by pure montmorillonite.[Method] The experiment had been done to investigate the pure montmorillonite in treating Zn-containing wastewater based on the purification of montmorillonite,the effecting factors of the pure montmorillonite on treating Zn-containing wastewater were explored,the technology conditions for removing the Zn in the wastewater by the pure montmorillonite were confirmed and the adsorbent isotherm curve of the pure montmorillonite to Zn2＋was studied.[Result] The treating effects of pure montmorillonite on the Zn-containing wastewater were mainly affected by such factors as the vibrating rate,adsorption time,aqueous pH value and montmorillonite adding amount.Under the temperature of 30 ℃,the adsorption isotherm curve of the pure montmorillonite to Zn2＋cloud more accord with Langmuir equation and BET equations,with the correlation coefficient of 0.986 9 and the biggest adsorption capacity of 39.00 mg/g.Under the this test condition,the process conditions for best effect of removing the Zn2＋（20 ml,Zn2＋concn.were all 50 mg/L） in the wastewater by the pure montmorillonite were as follows：the oscillation speed of 150 r/min,adsorption time of 60 min and solution pH value of 6.10,under which,the removal rate of Zn2＋reached 85.3%.[Conclusion] The study provided the scientific basis for the application montmorillonite in developing the new materials used for the sewage treatment.
出处
《安徽农业科学》
CAS
北大核心
2011年第35期21935-21936,21939,共3页
Journal of Anhui Agricultural Sciences
关键词
纯蒙脱石
含锌废水
吸附
Pure montmorillonite
Zn-Containing Wastewater
Adsorption
