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The powder of green coconut shell (Coco nuscifera L.) was chemically modified and used to remove inorganic anions from aqueous solution through batch process. The solid was modified with ammonium quaternary salt (2-hidroxypropyltrimethyl ammonium chloride) and characterized by a full factorial design. The FTIR, elemental analysis, SEM and X-ray measurements were performed. FTIR analysis indicated...
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