Heliyon, Journal Year: 2025, Volume and Issue: 11(4), P. e42559 - e42559

Published: Feb. 1, 2025

Highlights•First time demonstration of bio-based functionalized organosolv lignin (OL-APTES-H+) for phosphate adsorption and recovery from industrial dairy wastewater.•Sustainable alternative to conventional inorganic metal-based adsorbents, reducing environmental impact toxicity.•High removal efficiency confirmed in real wastewater, supporting its potential wastewater treatment applications.AbstractWastewater rich phosphates nitrates causes eutrophication leads the impairment freshwater resources. Out various methods used, is immaculate economical removing recovering streams a single-step process. This study explores adsorbent, [OL], chemically modified by grafting with 3-aminopropyltriethoxysilane [APTES], as an effective adsorbent [OL-APTES-H+] aqueous solutions wastewater. The characterization OL-APTES-H+ was performed using multiple analytical techniques, providing comprehensive information on material morphology, elemental composition, functional groups, thermal stability, surface charge, electrokinetic behavior. assessed under varying experimental conditions, including pH, contact time, initial concentration. capacity depended different forms species being preferentially adsorbed at pH values. A maximum 21.12 mg/g achieved 5. Kinetic studies indicated that process followed combination electrostatic interactions, chemisorption interaction, evidenced SEM EDS analyses. XPS results confirm phosphorus incorporation surface, reinforcing chemisorption. Adsorption isotherm analysis revealed data fitted well Langmuir model, suggesting monolayer mechanism. performance enhanced presence monovalent ions, while slight reduction observed divalent anions. When applied exhibited efficiencies ranging 30% 58%. Overall, demonstrates considerable recovery, effectively mitigating pollution bodies eco-friendly source sustainable agricultural practices.Graphical abstract

Language: Английский