摘要
在研究水合氧化铈对氟离子吸附的基础上 ,成功研制了无机铈基吸附剂(CFA)。对CFA吸附氟的性能进行试验研究。结果表明 ,CFA吸附氟的速度快 ,吸附量大 ,吸附模式符合Freundlich方程 ,溶液的低 pH值有利于CFA对氟的吸附。表征了CFA的物理化学特征 ,探讨了CFA的除氟机理 。
An inorganic cerium based adsorbent was developed on the basis of the research of adsorption of fluoride on cerium oxide hydrate. Some experimental results of adsorption of fluoride on cerium ferrous adsorbent (CFA) show that CFA has a fast adsorption rate and a large adsorption capacity, adsorption equilibrium follows Freundlich isotherm, and that the low pH value promotes fluoride removal. Some physical chemistry characteristics of CFA were experimentally determined, fluoride removal mechanism was explored, and the result shows that hydroxyl group plays an important role in the fluoride removal.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2004年第5期542-546,共5页
Journal of Nanjing University of Science and Technology
关键词
氟
无机吸附剂
吸附
面积电荷
fluoride
inorganic adsorbent
adsorption
surface charge
