An object of the invention is to provide an effective and economical process for separating ash particles from a mixture of ash and regenerated adsorbent particles contained in an aqueous slurry without increasing {HEAD ~ the volume} of {TAIL ~ wastewater} containing ash particles 
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An object of the invention is to provide an effective and economical process for separating ash particles from a mixture of ash and regenerated adsorbent particles contained in an aqueous slurry without increasing { HEAD ~ the volume } of { TAIL ~ wastewater } containing ash particles
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