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Davis Castro dos Santos,Eder Cláudio Lima,Matthew Ayorinde Adebayo,Simone de Fátima Pinheiro Pereira,Lizie Daniela Tentler Prola,Renato Cataluña,Caroline Saucier,Caline Rodrigues Gally,Fernando Machad 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.8
New carbon composite materials were prepared by pyrolysis of mixture of coffee wastes and red mud at700 oC with the inorganic : organic ratios of 1.9 (CC-1.9) and 2.2 (CC-2.2). These adsorbents were used to removereactive orange 16 (RO-16) and reactive red 120 (RR-120) textile dyes from aqueous solution. The CC-1.9 and CC-2.2 materials were characterized using Fourier transform infrared spectroscopy, Nitrogen adsorption/desorption curves,scanning electron Microscopy and X-ray diffraction. The kinetic of adsorption data was fitted by general order kineticmodel. A three-parameter isotherm model, Liu isotherm model, gave the best fit of the equilibrium data (298 to 323 K). The maximum amounts of dyes removed at 323 K were 144.8 (CC-1.9) and 139.5 mg g−1 (CC-2.2) for RO-16 dye and95.76 (CC-1.9) and 93.80 mg g−1 (CC-2.2) for RR-120 dye. Two simulated dyehouse effluents were used to investigatethe application of the adsorbents for effluent treatment.