环境矿物材料对矿井水中氟化物的吸附性能研究  

Adsorption Performance Research of Environmental Minerals on Fluoride Ion in Mine Water

作　　者：何瑞敏 苏双青 赵焰 李井峰 包一翔 HE Ruimin;SU Shuangqing;ZHAO Yan;LI Jingfeng;BAO Yixiang(Shendong Coal Group Co.,Ltd.,CHN ENERGY,Yulin 719000,China;State Key Laboratory of Water Resource Protection and Utilization in Coal Mining,CHN ENERGY,Beijing 102209,China;CHN Energy Lucency Enviro-tech Co.,Ltd.,CHN ENERGY,Beijing 100039,China)

机构地区：[1]国家能源集团神东煤炭集团公司,陕西榆林719000 [2]国家能源集团煤炭开采水资源保护与利用国家重点实验室,北京102209 [3]国家能源集团国能朗新明环保科技有限公司,北京100039

出　　处：《煤炭技术》2022年第8期111-114,共4页Coal Technology

基　　金：国家能源集团2030重大项目先导资助项目(GJNY2030XDXM-19-04.2)。

摘　　要：以斜发沸石、火山石、蛇纹石、膨润土、凹凸棒土5种环境矿物材料作为吸附剂,探究其对低浓度氟离子的吸附效果,筛选适宜大规模含氟矿井水除氟的矿物材料。结果表明,膨润土对氟离子去除率最高,初始氟离子浓度为5 mg/L时去除率达到54.08%,对氟离子的吸附符合准二级动力学模型,吸附过程发生了化学反应,氟离子与膨润土中的羟基发生离子交换。膨润土改性后用于含氟矿井水处理,氟离子去除率达到87.8%,出水的氟离子浓度为0.63 mg/L,达到饮用水标准。Five kinds of environmental minerals, Clinoptilolite, volcanic rock, serpentine, bentonite and attapulgite, were used as adsorbents to explore the feasibility of their adsorption of low fluorine ions in the aquatic solution in this study. The results showed that bentonite had the best adsorption efficiency for fluoride ions, and the removal rate of fluoride ion can reach to 54.08% at initial fluoride concentration of 5 mg/L. Kinetic fitting showed that the removal of fluoride ion by bentonite accorded with quasi-second-order kinetics, chemical reaction took place in the adsorption process, and fluoride ion exchanged with hydroxyl groups in bentonite. The fluoride removal rate reached 87.8% with modified bentonite in mine water. After adsorption, the fluoride concentration was 0.63 mg/L, which was higher than the standard of drinking water.

关 键 词：环境矿物材料 矿井水 膨润土 氟离子 吸附 

分 类 号：X703[环境科学与工程—环境工程] X142