Akademik Veri Yönetim Sistemi
Biomass Conversion and Biorefinery, 2024 (SCI-Expanded)
Activated carbon (AC) prepared from apple peel was used in the adsorption of aniline from an aqueous solution. The characterization of AC adsorbent was evaluated with the BET and SEM/EDX analysis. The results were showed that BET surface area of 1206.788 m2 g−1, Langmuir surface area of 1035.467 m2 g−1, average pore diameter of 2.743 nm and pore volume of 0.597 cm3 g−1. The effects of parameters, initial aniline concentration (15–75 mg L−1), pH (2–9), temperature (298–318 K) and contact time on the adsorption were investigated. The results of isotherm, kinetic and thermodynamic studies were assessed for determination of aniline adsorption behaviour on AC. The obtained data were the best agree with the Freundlich isotherm than Temkin, Langmuir and Dubinin-Radushkevich (D-R) isotherms and maximum adsorption capacity (qmax) was calculated 237.977 mg g−1 at 298 K. PSO kinetic model which had the highest coefficients (R2) was determined the best choice among the applied models. The percentages of aniline removal were obtained 96.64%, 97.41% and 98.53% for 60 mg L−1 aniline concentration at 298 K, 308 K and 318 K, respectively. The negative free energy, enthalpy and entropy values of process were obtained − 13837.9 J mol−1, 90123.5 J mol−1 and 333.4 J mol−1 K−1 for 30 mg L−1 aniline concentration at 318 K, respectively. The results were showed that endothermic, spontaneous and workability behaviour of this removal process and activation energy was found 13.07 kJ mol−1. This research had important results which was demonstrated that AC prepared from biomass conversion can used effectively for removal pollutants from wastewater.