Synthesis and characterization of corn stalk and cob-derived cellulose aerogels (Zea Mays) as adsorbents for oil spill remediation
نویسندگان
1 Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University, Makassar, South Sulawesi 90245, Indonesia.
2 Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University, Makassar, South Sulawesi 90245, Indonesia.
3 Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University, Makassar, South Sulawesi 90245, Indonesia.
4 Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University, Makassar, South Sulawesi 90245, Indonesia.
5 Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University, Makassar, South Sulawesi 90245, Indonesia.
6 Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University, Makassar, South Sulawesi 90245, Indonesia.
doi
10.22034/crl.2026.578203.1799چکیده
This study aimed to synthesize and characterize cellulose-based aerogels derived from corn stalks and cobs to evaluate their performance as oil spill adsorbents. The research involved three main stages: sample preparation, cellulose extraction from corn stalks and cobs, and aerogel synthesis via the freeze-drying method. The resulting aerogels were characterized using FTIR, XRD, SEM, and BET-BJH analyses, while the oil adsorption capacity was determined gravimetrically. The synthesized cellulose aerogel exhibited a crystallinity index of 93.54% with a crystallite size of 11.26 nm. 5Surface area analysis revealed a specific surface area of 18.27 m^2/g and an average pore diameter of 4.6 Å. Oil adsorption data fitted both the Langmuir and Freundlich isotherm models, with correlation coefficients (R2) of 0.7567 and 0.9907, respectively. The effects of temperature, concentration, and thermodynamic parameters suggested that the adsorption process onto the cellulose aerogel was predominantly physical (physisorption).The thermodynamic parameters for oil were determined as ΔG = -4.1075 kJ/mol, ΔH = -4.5120 J/mol, ΔS = –14.0340 kJ/mol.
