改性方法对煤渣除氟性能的影响  

Study of the Effects of Different Modified Cinders on Fluoride Removal

作　　者：沈俊菊[1] 李彦儒[1] 王丽娟[1] 

机构地区：[1]山西师范大学化学与材料科学学院,山西临汾041004

出　　处：《山西师范大学学报（自然科学版）》2013年第3期53-57,共5页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：山西省高校高新技术产业化项目(20110016)

摘　　要：本实验比较了经硫酸、氢氧化钠、高温和超声波改性后的煤渣对氟离子的吸附效果,并研究了超声波改性煤渣对氟的吸附性能.结果表明:超声波改性煤渣的除氟效果最好,当超声时间为60 min时,氟离子的吸附量达到0.972 6 mg·g–1.在20℃、30℃和40℃温度下,不同浓度下的等温吸附实验数据都符合Langmuir等温式.此外,热力学参数表明超声波改性煤渣吸附氟离子是自发的、吸热的、熵增加的过程.Abstract： sonic modified investigated in obviously up to of 20 ℃ ,30℃ eters indicated The effects of fluoride removal with sulfuric acid, sodium hydroxide, high temperature and ultra- cinder were compared and the fluoride adsorption characteristics of ultrasonic modified cinder were present study. The results showed that the adsorption capacity of cinder for fluoride increased most 0. 972 6 mg·g - 1 after 60 minutes ultrasonic treatment. The experimental data at the temperature and 40 ℃ complied well with that the adsorption process of Langmuir adsorption isotherm. In addition, thermodynamic param- fluoride was a spontaneous and endothermic process of entropy in-crease.

关 键 词：改性煤渣 超声波 除氟 

分 类 号：X703[环境科学与工程—环境工程]