Iron-doped Biochar for effective removal of dissolved phosphate from the aqueous phase

Due to the discharge of the effluent containing rich-nutrient matters such as phosphate into water bodies, some of the problems including eutrophication created that created adverse environmental impacts. Hence, we prepared a new Fe-doped coconut fiber coir-based biochar (Fe-CFCB) as an effective adsorbent for adsorbing phosphate from an aqueous solution. According to characteristics results, the amorphous structure besides the presence of ferrihydrite and hydroxide confirmed in the Fe-CFCB, enhances the phosphate adsorption. The pH and Temperature are played the main roles in phosphate adsorption by Fe-CFCB, according to batch experimental. the experimental data and before/after adsorption characteristics appeared that the electrostatic attraction, chemical precipitation, and complexation could be considered as main mechanisms of adsorption P by Fe-CFCB. The newly prepared adsorbent could reveal a feasible pathway for phosphate removal from an aqueous solution and also could consider an effective and eco-friendly adsorbent for the removal of wide ranges of pollutants in the future.