摘要
利用焙烧水滑石对水中硫酸根离子进行吸附性能研究,考查了初始pH值、吸附时间、吸附剂用量等条件对吸附的影响。结果表明,焙烧水滑石对水中硫酸根离子具有良好的吸附能力。X射线衍射分析结果表明,水滑石及其焙烧产物对硫酸根的吸附机理不同。pH值对吸附的影响较大,pH值较低时吸附效果较好。吸附平衡符合Langmuir方程,室温下饱和吸附量为32.895 mg/g。
The removal of sulfate from aqueous solution by adsorption of it on calcined layered double hydroxides（CLDH） was studied. The effects of pH valve, sorbent dosage and adsorption time on the adsorption were investigated. The experimental results showed that the calcined product had an excellent performance in adsorbing sulfate. X-ray diffraction examination confirmed the mechanisms of sulfate sorption on layered double hydroxide and its calcined product are different, pH value plays an important role in adsorption, and the adsorption happened in 90 minutes and decreased with increasing pH. The adsorption is in conformity with the Langmuir isotherm type equation and the adsorption capacity is 32.895 mg/g.
出处
《矿物学报》
CAS
CSCD
北大核心
2007年第2期109-114,共6页
Acta Mineralogica Sinica
基金
国家自然科学基金项目(20477041)
关键词
水滑石
硫酸根
吸附
焙烧
layered double hydroxide
removal
sulfate
calcine
