Application of Biochar Produced from Palm Shells for the Separation of Crystal Violet from Aqueous Solution By Adsorption

The present study investigates the application of biochar produced from palm shells using microwave heating technology for the removal of crystal violet from aqueous solution by adsorption. The effects of operating parameters such as initial pH, adsorbent dose, contact time, initial dye concentration and temperature were studied in batch adsorption experiments. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis were used to characterize the biochar. It was observed that the optimum pH for this adsorption process is corresponding to a pH of 8.0 at 30^oC. The preferred amount of adsorbent dose is 1.0 g per 150 ml of feed dye solution. The adsorption data has been fitted well with Dubinin-Radushkevich (D-R) isotherm model. Kinetic studies showed that the adsorption process follow pseudo second order model.