高岭石和酸化高岭石对F、NH3-N、Cr吸附性能探讨

为了深入了解高岭石对非金属的吸附性能,通过采用室内分析的方法,研究了高岭石和酸化高岭石对含氟、氨氮、铬的溶液的吸附效果以及它们的吸附模型。结果表明,随着平衡液浓度的增大,高岭石和酸化高岭石的铬、氨、氟的吸附量逐渐增大,但不同的吸附材料对废水中不同的离子的去除效果不同;其中高岭石对铬和氨的吸附效果优于酸化高岭石,对氨的吸附效果低于对铬的吸附效果,而酸化高岭石对氟吸附量和去除率均高于高岭石;高岭石和酸化高岭石对铬、氨、氟的吸附符合Freundlich方程、Langmuir方程能和Temkin方程,其中以Freundlich方程的拟合精度比较高。

Studies in Effects of Kaolinite and Acidic-kaolinite on Cr, NH3-N and F Adsorption

To understand deeply the nonmetal ion adsorption ability of kaolinite and acidic-kaolinite, this paper studied the effects of kaolinite and acidic-kaolinite on disposing water holding Cr, NH3-N and F, and built the adsorption model by using laboratory analysis. The results showed that, with the contents of Cr, NH3-N and F increased, the adsorb capacity of kaolinite and acidic-kaolinite increased, but different adsorb material had different effects on different ions, kaolinite had better effect on removing Cr and NH3-N than acidic-kaolinite, and kaolinite could remove more Cr than NH3-N, acidic-kaolinite had better effect on F adsorption. The adsorption of Cr, NH3-N and F by using kaolinite and acidic-kaolinite fitted Freundlich equation, Langmuir equation and Tekmin equation, and Freundlich equation was the best to state these adsorptions.