摘要
为高效去除废水中的染料,以钠基蒙脱石为原料,经湿法改性蒙脱石制备了铝柱撑蒙脱石(Al-mt)。利用XRF、FTIR、XRD对其进行表征;以难降解的偶氮染料橙黄Ⅳ配制模拟废水,研究了Al-mt吸附橙黄Ⅳ的性能及吸附动力学和热力学。结果表明:在25℃,pH值为5时,对50 mg/L的橙黄Ⅳ吸附30 min到达吸附平衡,吸附率95.90%,且吸附过程满足Freundlich等温吸附模型和拟二级动力学方程。
In order to efficiently remove dyes in waste water, aluminum-pillared montmorillonite(Al-mt) was prepared by wet modification of montmorillonite using sodium-based montmorillonite as raw material. XRF, FTIR, XRD were used to characterize it;the refractory azo dye Orange Ⅳ was used to prepare simulated wastewater, and the adsorption performance and adsorption isothermal kinetics of Al-mt for Orange Ⅳ were studied. The results showed that at 25 ℃ and pH value of5, 50 mg/L orange Ⅳ was adsorbed for 30 min to reach the adsorption equilibrium, the adsorption rate was 95.90%, and the adsorption process satisfies the Freundlich isotherm adsorption model and the pseudo-second-order kinetic equation.
作者
徐霞
李桂春
高越
Xu Xia;Li Guichun;Gao Yue(School of Mining Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China)
出处
《煤炭与化工》
CAS
2022年第7期127-132,共6页
Coal and Chemical Industry
基金
黑龙江科技大学研究生创新科研项目(YJSCX2020-216HKD)。
关键词
蒙脱石
吸附性能
橙黄Ⅳ
montmorillonite
adsorption performance
orangeⅣ
