Reactive blue 19 adsorption onto Prunus dulcis shell–derived activated carbon: mechanistic insight, kinetic and thermodynamic evaluation
Chemical Engineering Communications, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1080/00986445.2026.2700772
- Dergi Adı: Chemical Engineering Communications
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: Activated carbon, adsorption kinetics, almond shell, biomass valorization, reactive blue 19, thermodynamics
- İnönü Üniversitesi Adresli: Evet
Özet
This study investigates the adsorption of Reactive Blue 19 (RB19) from aqueous solutions using KOH-activated carbon derived from Prunus dulcis shell waste. The adsorbent exhibited a highly microporous structure with a BET surface area of 1462.21 m2 g−1. Equilibrium analysis revealed heterogeneous multilayer adsorption behavior dominated by pore-filling mechanisms, while kinetic results showed that the pseudo-second-order model provided the best empirical description of the adsorption rate. Thermodynamic parameters (ΔH° = +8.11 kJ mol−1, ΔG° < 0) confirmed that the adsorption process is spontaneous, endothermic, and governed predominantly by physisorption. Compared with previously reported biomass-derived activated carbons, the prepared adsorbent exhibited competitive textural properties together with improved mechanistic interpretation of RB19 adsorption behavior. The study establishes a direct relationship between activation conditions, pore structure evolution, adsorption energetics, and temperature-dependent adsorption behavior. These findings demonstrate the potential of almond shell–derived activated carbon as a sustainable adsorption material for advanced wastewater treatment and provide mechanistic insight relevant to adsorption-based chemical engineering applications.