介孔纳米γ-Al_2O_3对Ca^(2+)、Mg^(2+)吸附性能的研究

Study on Adsorption Performance of Mesoporous Nano-γ-Al_2O_3 for Ca^(2+),Mg^(2+)

本文利用介孔纳米γ-Al2O3比表面积大、化学稳定性好等特点作为吸附材料,对包钢尾矿坝废水中的Ca2+、Mg2+进行吸附研究,并探讨溶液pH值、吸附剂用量以及吸附时间对吸附效果的影响。结果表明:当pH为4.0时,吸附时间为15 min,吸附剂用量为3 g,Ca2+吸附效率可达33%;当pH为6.0时,吸附时间为30 min,吸附剂用量为3 g,Mg2+吸附效率可达34%。

Due to large specific surface area and excellent chemical stability, the mesoporous nano gammaγ-Al2O3 was used as the adsorption to adsorb Ca2＋ and Mg2＋ of waste water from Baogang tailings dam. And the effect of pH value, sorbents dosage and adsorption time on the adsorption efficiency of Ca2 ＋ and Mg2＋ was studied. The result shows that when pH value is 4.0, adsorption time is 15 rain, and sorbents dosage is 3 g, the adsorption efficiency of Ca2＋ reaches 33% ; while, pH value is 6. 0, adsorption time is 30 rain, sorbents dosage is 3 g, the adsorption efficiency of Mg2 ＋ reaches 34%.