فهرست نشریات علمی دسترسی آزاد ایران

This study investigates the potential of utilizing coconut shells (Cocos nucifera) as a low-cost, effective adsorbent for dye pollutants in wastewater. Specifically, cellulose was extracted from coconut shells and evaluated for its efficiency in adsorbing methylene blue dye under various conditions. The study employed mechanical pre-treatment of coconut shells followed by chemical extraction of cellulose, which yielded a 13.17% cellulose content. Adsorption tests were conducted at varying pH levels, contact times, adsorbent dosages, dye concentrations, and temperatures to optimize the adsorption process. The results showed that isolated cellulose exhibited maximum adsorption efficiency at pH 12, with an optimal contact time of 30 minutes, while raw coconut shell biomass was most effective at pH 6 with a contact time of 40 minutes. The study further revealed that higher dye concentrations enhanced adsorption capacity, while increased temperatures reduced it, indicating that lower temperatures favor dye removal. The findings highlight the significance of optimizing adsorption conditions and suggest that both isolated cellulose and raw coconut shell biomass are promising adsorbents for sustainable water pollution control. This study contributes to develop practical and eco-friendly solutions for managing dye pollutants, benefiting environmental protection and public health.