Application of Wheat Husk in Color Removal of Textile Wastewater

Abstract

Abstract- Adsorption is the most efficient technique used to remove organicpollutants from wastewater. Dyes represent one of the pollutants that mayremove by adsorption. The textile industry used dyes for colorization of fibersand always generates a considerable amount of colored wastewater. In presentwork, the removal of Malachite green (MG) dye pollutant from syntheticwastewater onto mesoporous Wheat husk (WH) was studied in batch adsorptionsystems. The characterization for the prepared wheat husk was studied by,scanning electron microscopy (SEM), Fourier transforms infrared (FTIR)spectroscopy. The batch experiments were carried out to measure the removalefficiency of MG as a function of contact time, initial concentration (25-135mg/L), pH (2-13) and adsorbent dose (1-7 g/L). The equilibrium wasachieved within 8 hours. The equilibrium adsorption data of MG dye on wheathusk adsorbent were analyzed using isotherm models and the adsorption kineticdata were analyzed using pseudo-first and second order. The adsorptionisotherm results indicated a better fitting obtained by the Langmuir (R2=0.995)than Freundlich (R2= 0.883) and the adsorption formation of the monolayercould be described. Adsorption Kinetic results were fitted better by Pseudosecond order(0.9886) than Pseudo first order (0.984). The properties obtainedmake WH an ideal adsorbent for treatment of MG dye from wastewater, besides,to develop some environment-friendly and low-priced material is also thecrucial work.