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Nanoporous geopolymer was synthesized with and without using Cetyl trimethylammonium bromide (CTAB) by condensing the mixture of metakaolin and alkali solution at a fixed ratio at room temperature. The surface area of CTAB-geopolymer was found to be more (216m2/g) as compared to without CTAB added geopolymer (137m2/g). The experimental results verified that the geopolymer could adsorb copper ions...