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.
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)
关键词
改性煤渣
超声波
除氟
modified cinder
ultrasonic
fluoride removal
