Removal of methylene blue from water using sugar palm agro industry waste adsorbent

Abstract

This research was batch experiment conducted using palm powder waste (SPPW) from the palm agro industry. Variables studied were initial of solution pH and SPPW dose. Langmuir and Freundlich isotherm models were used for equilibrium analysis. For kinetics analysis, this study used Lagergren's pseudo-first-order kinetics model, Ho’s pseudo-second-order kinetics, ritchie and intraparticle diffusion. The study was found that the increase solution pH would increasing of adsorption capacity from 30.31 mg g-1 at pH 2 to 66.70 mg g-1 at pH 8. The dye removal was increase from 83% to 95% for the adsorbent dose from 0.5 gL-1 to 2 gL-1 while adsorption capacity was reduced from 66.70 to 19.01 mg g-1. The equilibrium studies well interpreted by the Freundlich and maximum adsorption capacity (qm) is 312.5 mg g-1. The kinetic studies found that the adsorption followed the pseudo second order.