Adsorption of Fluoride Ion by Inorganic Cerium Based Adsorbent |
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| Institution: | School of municipal and environmental engineering, Harbin institute of technology, Harbin, Hei Longjiang 150090, P.R.China;State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100080, P.R.China |
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| Abstract: | 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. |
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| Keywords: | fluoride inorganic cerium based adsorbent adsorption fluoride removal |
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