| his study examined the effectiveness of less expensive adsorbents such as peat, fly ash, and bentonite in removing phenol from municipal wastewater by adsorption. The effects of contact time, pH and adsorbent dosage on phenol removal were studied and adsorption data fitted to known isotherms. Desorption studies were carried out using deionized water in order to determine if the phenol adsorbed was being desorbed by peat, fly ash, and bentonite, because this may have an impact in the final disposal of the adsorbents or in the use of the adsorbent as a liner material.;Batch kinetic studies showed that an equilibrium time of sixteen, five, and sixteen hours was needed for the adsorption on peat, fly ash and bentonite respectively. Batch studies at different pH levels indicated that phenol was better adsorbed onto peat, fly ash, and bentonite in a pH range between 4.0 to 5.0 (21... |
