Ethylparaben removal using chitin carbons derived from Hermetia illucens pupa casings
Diamond and Related Materials, cilt.158, 2025 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 158
- Basım Tarihi: 2025
- Doi Numarası: 10.1016/j.diamond.2025.112713
- Dergi Adı: Diamond and Related Materials
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
- Anahtar Kelimeler: Activated carbons, Adsorption isotherm, Adsorption kinetic, Ethylparaben, Reusable
- Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet
Özet
The study developed activated carbons with a highly developed specific surface area, showing excellent adsorption properties for aqueous ethylparaben solutions and suitability for reuse. Empty pupal casings of Hermetia illucens served as precursors. Using a two-step process—microwave carbonization and activation with potassium carbonate—carbons with surface areas of 1200–2302 m2/g were produced. The resulting materials featured a highly developed pore structure, combining micropores and mesopores, ideal for adsorbing organic molecules. Adsorption kinetics and isotherms were analyzed using statistical physical models. The activated carbons exhibited a maximum adsorption capacity of 739 mg/g, demonstrating chemisorption behavior aligned with linear and non-linear pseudo-second-order kinetics and the linear Langmuir isotherm. The adsorption mechanism involved π-π interactions, hydrogen bonding, and electrostatic forces between ethylparaben molecules and the adsorbent surface. The process was endothermic and spontaneous under the tested conditions. The carbons retained high reusability, achieving 84 % desorption efficiency after three cycles. This research highlights the potential of waste-derived activated carbons for efficient and sustainable adsorption applications.