Adsorption, Isotherms, and Kinetics for Phenol Removal on Biochar Prepared from Wheat Husk

Abstract

In this study, wheat husks were transformed into biochar (BCs). It has been used to remove phenol from the wastewater. BCs it was prepared by hydrothermal carbonization and after activation with H3PO4 Therapy. the Tube furnace were used for carbonization. many examinations were used to study the BC properties such as Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET). in batch reactor, the operation condition were studied by many parameter in different dose, such as (pH, doses of BC and phenol ). also, to determine maximum removal efficiency of phenol on biochar. From results the best operating condition were pH and contact time 4, 1 hr, the BC dose 0.5 g / L, and 50mg/L for phenol dose. with constant for others parameters such as (agitation velocity of 150 rpm, ambient temperature, and initial phenol concentration 50 mg /L). the maximum removal efficiency for phenol reach to (84%). the second order was the best adsorption kinetic. Freundlich isotherm model has introduced a fair description for sorption, so, the BC could be utilized effectively as an adsorbent.