改性斜发沸石吸附矿井水中氟离子的研究  

Study on Fluoride Removal in Mine Water with Modified Zeolite

作　　者：苏双青 赵焰 王延忠 郭旭涛 陈雪 郭盼盼 赵燕超 刘宸 SU Shuang-qing;ZHAO Yan;WANG Yan-zhong;GUO Xu-tao;CHEN Xue;GUO Pan-pan;ZHAO Yan-chao;LIU Chen(CHN Energy Lucency Enviro-Tech Co.,Ltd.,Beijing 100039,China)

机构地区：[1]国能朗新明环保科技有限公司,北京100039

出　　处：《广州化工》2024年第11期138-141,共4页GuangZhou Chemical Industry

摘　　要：氟化物含量超标已成为限制矿井水利用的巨大挑战之一,研究了天然斜发沸石及H_(2)SO_(4)改性、Al_(2)(SO_(4))_(3)改性、NaOH溶液预处理后Al_(2)(SO_(4))_(3)改性、FeCl_(3)改性沸石对矿井水氟离子的吸附效果。结果表明,与天然斜发沸石相比,NaOH溶液预处理后Al_(2)(SO_(4))_(3)改性沸石MZ、FeCl_(3)改性沸石FZ对矿井水中氟离子的去除率提高了10.2倍和11.7倍,MZ及FZ的对氟离子的吸附符合Lagergren准二级动力学方程,理论平衡吸附容量分别达到0.428 mg/g及0.508 mg/g。改性沸石MZ及FZ对矿井水中氟离子去除率可达80%以上,为低浓度含氟矿井水的大规模低成本处理提供了科学依据。Excessive fluoride content has become one of the great challenges to the utilization of mine water.The fluoride removal abilities of natural clinoptilolite,zeolite modified by H2SO4,Al2(SO4)3,Al2(SO4)3 after NaOH solution pretreatment(MZ),FeCl3 after NaOH solution pretreatment(FZ)were investigated by static absorption experiments.Compared with natural clinoptilolite,the removal rates of fluoride ions in mine water by modified zeolites MZ and FZ increased by 10.2 and 11.7 times,respectively.The adsorption process could be well described by the accurate secondary kinetic rate equation,and the theoretical equilibrium adsorption capacities reached 0.428 mg/g for MZ and 0.508 mg/g for FZ.The removal rate of fluoride in mine water by modified zeolite MZ and FZ could reach more than 80%.After treatment,the fluorine concentration in mine water could meet the national drinking water standard,which provided a scientific basis for large-scale and low-cost treatment of low concentration fluoride mine water.

关 键 词：斜发沸石 改性 矿井水 氟离子 

分 类 号：X788[环境科学与工程—环境工程]