Modified camellia oleifera shell carbon with enhanced performance for the adsorption of cooking fumes

Abstract

Using Camellia oleifera shell (COS) as a raw material and phosphoric acid as the activator, activated Camellia oleifera shell carbon (COSC‐0) was prepared and then modified by Fenton’s reagent (named as COSC‐1). SEM, GC‐MS, FTIR, and specific surface area and pore analyzers were used to study the adsorption performance of COS, COSC‐0, and COSC‐1 on cooking fumes. Results showed that COSC‐1 was the best adsorbent compared with COS and COSC‐0. The adsorption quantity and penetrating time of COSC‐1 were 44.04 mg/g and 4.1 h, respectively. Most aldehydes could be adsorbed by COSC‐1, which was due to the large number of carbonyl and carboxyl groups generated on the surface of COSC‐1 from the action of Fenton’s reagent. The adsorption effect of COSC‐1 on different types of pollutants in cooking fumes was analyzed based on the similar com-patibility principle. COSC‐1 showed a much higher adsorption effect on the strong polarity functional groups than on weak polar groups. The results provide a theoretical basis for the application of Camellia oleifera shell carbon adsorption technology in the treatment of cooking fumes.