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High fluoride groundwater occurs widely in China, presenting a quite serious environmental problem.Zeolite from Xinyang, China was tested as the fluoride-removing adsorbent.Batch and column experiments on fluoride removal using modified zeolites treated with hydrochloric acid, sodium hydroxide, sodium chloride and ferric chloride, respectively show that 0.1 mol/L HCl modified zeolite can be used as an adsorbent for fluoride, with an adsorption capacity of 173.16 mg/kg.
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