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Preparation of Activated Carbon from Coffee Waste as an Adsorbent for the Removal of Chromium (III) from Water. Optimization for an Experimental Box-Behnken Design
- Adolfo Eduardo Obaya Valdivia,
- Carlos Montaño Osorio and
- Yolanda Marina Vargas Rodríguez
Coffee grounds are an organic waste consisting of the ground, roasted and processed grain for the extraction of coffee, being of great volume the waste obtained, which, if not treated and preserved for a long time, emanates unpleasant aromas and beco...

