Composite metal oxide adsorbent for fluoride removal

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The invention provides a composite metal oxide adsorbent for fluoride removal and the preparation method thereof. Said composite metal oxide adsorbent for fluoride removal comprises : 0.05-0.15 molar parts of transition metal, 0.2-0.6 molar parts of Al and/or Mg, and 0.05-0.15 molar parts of rare earth metal. The composite metal oxide adsorbent for fluoride removal has a saturation adsorption capacity on fluorine in water of up to 229 mg/g, under a neutral condition.