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- Title
Lignite-derived graphite synthesis for the removal of nonylphenol ethoxylate.
- Authors
Elibol, Pinar Sevim; Erdogan, Hakki
- Abstract
This research was centred on the synthesis and characterization of lignite-derived graphite (LDG) as an alternative adsorption material for eliminating nonylphenol ethoxylate (NPE) from aqueous solutions. The characterization of LDG revealed distinctive morphological traits, consisting of tubular structures and densely packed layers. These structural attributes augment adsorption capacity when compared to traditional materials by increasing surface area and establishing intricate pathways that facilitate NPE transport. To achieve this goal, the impacts of variables such as pH, contact time, initial concentration, and temperature on NPE removal via LDG were investigated. The study indicated that NPE adsorption onto LDG occurs rapidly, with equilibrium attained within a mere 5 min. Moreover, it was determined that LDG effectively operates across a broad pH range. The acquired data were elucidated using the pseudo-second-order kinetic model, providing the most accurate representation of the adsorption process. Furthermore, the Dubinin-Radushkevich isotherm analysis indicated the prevalence of a physical mechanism in the NPE adsorption onto LDG. Throughout the study, characterization of the synthesized LDG was carried out through X-ray diffraction, scanning electron microscopy, and Brunauer-Emmett-Teller analysis. In conclusion, this study underscores the synergy between LDG's distinctive physical and chemical properties, positioning it as a promising material for efficiently extracting NPE from contaminated water sources.
- Subjects
NONYLPHENOL; GRAPHITE; ADSORPTION capacity; CHEMICAL properties; SURFACES (Technology)
- Publication
Desalination & Water Treatment, 2023, Vol 308, p170
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2023.29987