Equilibrium Isotherm Studies of Adsorption of Pigments Extracted from Kuduk-kuduk (Melastoma malabathricum L.) Pulp onto TiO2 Nanoparticles - N. T. R. N. Kumara; Nurulhayah Hamdan; Mohammad Iskandar Petra; Kushan U. Tennakoon; Piyasiri Ekanayake (Journal of Chemistry)