ZANG Ye, WANG Xiaoli, WANG Siyang

(a. College of Chemistry and Environmental Science; b. Inner Mongolia Key Laboratory of Environmental Chemistry,Inner Mongolia Normal University，Hohhot 010022，China)

Abstract: Zeolite of LSX was synthesized by traditional hydrothermal synthesis from coal gangue in Wuhai area as raw material. The optimum conditions for synthesis of zeolite of LSX were determined by adsorption experiments of simulated ammonia-containing wastewater. The experiment results show that the best conditions for coal gangue to synthesize LSX zeolite are as follows: ratio of silica-alumina is 1，aging time is 30 h, aging temperature is 60 ℃, crystallization time is 4 h and crystallization temperature is 100 ℃. Under these conditions, the removal rate of simulated ammonia nitrogen wastewater by synthetic zeolite reaches 54.19 %. The results of XRD、SEM and BET show that morphology of synthetic zeolite is regular, its specific surface area is 400.978 m2/g and its aperture is 3.828 nm.

Keywords: coal gangue; zeolite of LSX; hydrothermal synthesis

中图分类号：O65

文献标志码：A

收稿日期： 2018-12-06，修回日期：2019-01-18，在线出版时间：2019-01-23 10:04。

基金项目：国家自然科学基金项目，编号：41263005；内蒙古自治区水环境安全协同创新培育中心项目，编号：XTCX003。

第一作者简介：臧晔(1993—)，女，硕士研究生，研究方向为环境分析化学。E-mail：413887328@qq.com。

通信作者简介：王晓丽(1971—)，女，博士，教授，硕士生导师，研究方向为环境分析化学。E-mail：wxl@imnu.edu.cn。

文章编号：1008-5548(2019)02-0037-05

DOI:10.13732/j.issn.1008-5548.2019.02.007