The Adsorbing Colloid Flotation of Fluoride Ion by Aluminum Hydroxide in Aqueous Media
作者:
AnnN. Clarke,
DavidJ. Wilson,
期刊:
Separation Science
(Taylor Available online 1975)
卷期:
Volume 10,
issue 4
页码: 417-424
ISSN:0037-2366
年代: 1975
DOI:10.1080/00372367508058030
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Up to 15.7 ppm fluoride can be removed from solution, pH 7.3 to 7.8, by adsorption onto colloidal aluminum hydroxide at a concentration of 40 ppm Al. This adsorbing colloid-adsorbed ion combination is then removed by foaming with 40 ppm sodium lauryl sulfate. After 30 min the concentration of fluoride is 0.0 ppm. The concentration of aluminum is also 0 ppm. Efficiency of removal slowly decreases with increasing ionic strength. Chloride ion interference is minimal.
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