Textile Dye Removal by Activated Date Seeds


Abstract- The objective of the study was to prepare activated carbon from dateseeds (ADS) and use it as a medium for textile dye adsorption. Batch adsorption ofreactive green dye showed that dye adsorption depends on the contact time, the dyeconcentration, and the pH equilibrium. Different concentrations of the preparedactivated carbon were used with different dye concentrations and evaluated for dyeremoval efficiency. The maximum dye adsorption in this study was achieved after270 min at a pH range of 5-9. In this study, the functional groups in the preparedADS were identified using Fourier transform infrared (FTIR) while the crystal sizewas determined using an X-ray diffractometer (XRD). The Langmuir andFreundlich isotherm equation were used to study the adsorption kinetics,isotherms, and dye desorption while the pseudo-second-order kinetics was used toanalyze the equilibrium adsorption data of the reactive green dye on the preparedADS. The dyes’ adsorption kinetics followed pseudo-second-order kinetics, whichis adjudged as the best in adsorption studies. The equilibrium data were best fittedwith the Freundlich isotherm model. Conclusively, the adsorption of dye onto theprepared ADS was observed to be an endothermic physical adsorption process.