Synthesis of activated carbon from osage orange (Maclura pomifera) fruits: Process optimization, characterization and Cr (VI) adsorption performance
Journal of Molecular Liquids, cilt.433, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 433
- Basım Tarihi: 2025
- Doi Numarası: 10.1016/j.molliq.2025.127967
- Dergi Adı: Journal of Molecular Liquids
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC
- Anahtar Kelimeler: Activated carbon, Cr (VI) adsorption, Maclura pomifera, Osage orange, Pore distribution, Surface characterization
- Kırklareli Üniversitesi Adresli: Evet
Özet
This study investigated the activated carbon (OOAC) productions from Osage orange fruits by altering production conditions, their characterizations, and the Cr2O72- adsorption application of the activated carbon with the greatest surface area determined. TGA, BET, FTIR, EDX, SEM, and pHpzc, analysis techniques were performed to characterize OOACs in detail. It was determined that N2 adsorption isotherms of OOACs resembled the blend of type IV and type I, suggesting that OOACs had micropore and mesopore structures. The highest surface area, total pore volume, and t-plot pore volume of OOAC were found to be 1174.47 m2/g, 0.695 cm3/g, and 0.269 cm3/g when used dried Osage orange fruit feedstock after the oil extraction with hexane at the carbonization condition of 1.0/1.0 ZnCl2/feedstock impregnation ratio, 600 ℃, and 120 min. In Cr2O72- adsorption processes by OOAC, the influences of contact time, initial adsorbate concentration, adsorbent dosage, initial pH, and temperature were analyzed. Compared to the other isotherm and kinetic models applied in this study via nonlinear equation forms, Freundlich and Elovich kinetics models provided the greatest fit to the experimental data of Cr2O72- adsorption by OOAC, and the thermodynamic study showed that Cr2O72- adsorption by OOAC was generally feasible, spontaneous, and endothermic in nature.