摘要
对凹凸棒粘土吸附金属离子的性能进行了研究,采用氯化铵-无水乙醇法测定凹凸棒粘土的阳离子交换容量为40.44mmol/(100g)。探讨了凹凸棒粘土在不同条件下对Cr6+吸附性能的影响。结果表明,凹凸棒粘土对Cr6+吸附的最优化条件为温度30℃、吸附时间30min、pH为7。在此条件下,凹凸棒粘土对Cr6+、Cu2+、Mn2+、Fe3+的饱和吸附量分别为48.93、32.72、10.22、4.85mg/g。
The attapulgite clay adsorption properties for heavy mental ions are investigated. The cation exchange capacity（CEC） of the clay is 40.44 mmol/（100 g） tested by the ammonium chloride-anhydrous ethanol method. The effects of different conditions on the adsoiption properties of Cr^6＋ are discussed. The results show that optimum conditions are as follows. Adsorption temperature is 30℃, adsorption time is 30 min and the pH is 7. In such condition, the attapulgite clay saturation adsorption capacities for Cr^6＋、Cu^2＋、Mn^2＋、Fe^3＋ are 48.93, 32.72, 10.22, 4.85 mg/g, respectively.
出处
《染整技术》
CAS
2013年第5期31-34,共4页
Textile Dyeing and Finishing Journal
关键词
凹凸棒粘土
重金属离子
吸附
阳离子交换容量
attapulgite clay
heavy metal ions
adsorption
cation exchange capacity
