Adsorption of fluoride ion by inorganic cerium based adsorbent

作者：Jiao Z*******^*; Chen Zhonglin; Yang Min; Zhang Yu; Li Guibai

来源：High Technology Letters, 2004, 10(4): 83-86.

• Cerium based adsorbent
• Cerium oxide hydrate
• Fluoride removal
• Hydroxyl group

Excess of fluoride in drinking water is harmful to human health, the concentration of F- ions must be maintained in the range of 0.5 to 1.5 mg/L. An inorganic cerium based adsorbent (CTA) is developed on the basis of research of adsorption of fluoride on cerium oxide hydrate. Some adsorption of fluoride by CTA adsorbent experiments were carried out, and results showed that CTA adsorbent has a quick adsorption speed and a large adsorption capacity. Adsorption follows Freundlich isotherm, and low pH value helps fluoride removal. Some physical-chemical characteristics of CTA adsorbent were experimented, fluoride removal mechanism was explored, and results showed that hydroxyl group of CTA adsorbent played an important role in the fluoride removal.

• 出版日期2004
• 单位中国科学院