Langmuir, Год журнала: 2025, Номер unknown
Опубликована: Май 22, 2025
In the current work, a novel carbonaceous composite was successfully synthesized via pyrolysis utilizing lignin extracted from Raw Stipa Tenacissima fibers, locally referred to as Alfa combined with clay. This material developed aim of enhancing removal efficiency anionic dyes wastewater, particularly methyl orange (MO), which is commonly used in textile industry and known for its persistence aquatic environments. A comprehensive physicochemical characterization adsorbent conducted know surface structural properties. Zeta potential analysis provided insight into charge behavior, The Brunauer-Emmett-Teller method revealed significant increase specific area postcarbonization, correlates improved adsorption performance. successful incorporation carbon on clay further confirmed by EDX mapping, indicating uniform stable distribution matter throughout matrix. performance evaluated through batch experiments. Key operational parameters such dosage, contact time, initial dye concentration, temperature, pH were optimized identify conditions leading maximum efficiency. Kinetic modeling indicated that behavior closely followed pseudo-first-order model, suggesting process governed physisorption mechanisms. remarkable improvement capacity observed upon carbonization, exhibiting equilibrium (Qe) 228.58 mg/g, compared 110.07 mg/g pristine To gain molecular-level insights mechanism, density functional theory calculations Monte Carlo simulations employed. These theoretical investigations stronger binding affinities MO molecules surface, primarily driven electrostatic interactions hydrogen bonding between groups introduced during carbonization.
Язык: Английский