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Conventional way to remove arsenic from caustic solution is neutralization-precipitation process, which costs a large amount of acidic reagents while huge wastes are generated. This study proposed a method for arsenic removal from caustic solution using Friedel’s salt as an adsorbent. Friedel’s salt was synthesized by coprecipitation in different feeding ways and characterized by XRD, FESEM, DSC-TGA...
Arsenic is enriched in liquor during the processing of copper anode slime by alkali fusion-leaching. The conventional method of removing arsenic from caustic liquors requires the neutralization followed by the introduction of calcium oxide or calcium hydroxide. In this work, the hydrocalumite, Ca2Al(OH)6Cl·2H2O, are proved for the first time to remove up to 91% arsenic from caustic solution. Hydrocalumite...
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