Development of high-efficient remediation processes of wastewater, groundwater and soil containing fluoride ion (F–) is desirable. In this study, the F– sorption conditions of synthesized sorbents utilizing seashells were investigated. The seashells sorbents can sorb F– under initial pH conditions of pH 2 to 10. The effects of anions on F– sorption by seashells sorbents were investigated. The results showed that chloride, sulfate and nitrate ions had no effect on the sorption of F–. In the presence of phosphate ion, the removal rate of F– increased. On the other hand, in the presence of carbonate ion, the removal rate decreased as the concentration of carbonate ion increased.
HAREYAMA et al. (Wed,) studied this question.
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