Efficient absorption of ibuprofen in aqueous solution using eco-friendly C3N4/soot composite
| Autor: | Ming Li, Dunyu Liu, Riquan Liao, Weitao Li, Liang Wang, Xiangfeng Lin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
Materials science Mechanical Engineering Diffusion Langmuir adsorption model 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology medicine.disease_cause 01 natural sciences Endothermic process Soot 0104 chemical sciences symbols.namesake Adsorption Chemical engineering Mechanics of Materials symbols medicine General Materials Science Absorption (chemistry) 0210 nano-technology Pyrolysis |
| Zdroj: | Journal of Materials Science. 53:5929-5941 |
| ISSN: | 1573-4803 0022-2461 |
| Popis: | The removal of ibuprofen (IBP) from wastewater is a hot topic in both academic and industrial fields. Herein, we reported a novel eco-friendly absorbent C3N4/soot composite via a simple one-step pyrolysis process, which had high adsorptive activity for the removal of IBP from wastewater. Adsorption kinetic and isotherm data of the adsorption process were investigated. The adsorption capacity at room temperature for low equilibrium concentration (10 mg/L) was as high as 104 mg/g, which was very similar to the maximum adsorption capacity (148.81 mg/g). The pseudo-first-order, pseudo-second-order, and the intraparticle diffusion models could best describe adsorption kinetics of IBP on 7 wt% C3N4/soot, and adsorption isotherm is well fitted to Langmuir model. Thermodynamic parameters (ΔH, ΔG, and ΔS) indicated that IBP adsorption on C3N4/soot composite was spontaneous and endothermic. Moreover, the potential adsorption mechanism of C3N4/soot composite for the adsorption of IBP was proposed. The 7 wt% C3N4/soot composite exhibited much higher adsorptive activity and still showed a relatively high adsorption stability even after five cycles, which were potentially suitable for high efficiency and low-cost water purification. |
| Databáze: | OpenAIRE |
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