ASSESSMENT OF NIGERIAN LAUMONTITE ZEOLITE IN THE ADSORPTION OF ACID RED 27 AND BRILLIANT GREEN DYE IN SYNTHETIC WASTEWATER

Abstract: This study dwell on the removal of color of two different dye types namely Acid Red-27 (AA27) and Brilliant Green (BG) in a simulated waste dye water. An adsorption process in which the parameters were optimized with response surface methodology was adopted. Numerical optimization was determined at optimum conditions for BG and AA27, respectively and was used in carrying out a batch equilibrium studies while studying the effect of contact time, initial concentration and adsorbent dosage. The outcome of the experimentation indicate that the adsorbent dosage of the dye solution had a significant impact on adsorption. The result also showed that Freundlich isotherm fit the isotherm model for AA27, and Langmuir isotherm fit that of BG. The overall experimental data indicate a maximum removal of 96.24 % and 83.10 % was found for Brilliant Green and Acid Red 27 respectively while the maximum dye adsorption capacity of BG and AA27 was obtained at 68.02 and 3.43 mg/g, respectively. Activated Nigerian Laumontite zeolite has capability for adsorption and hence can be used for effective removal of dyes from wastewater.