Application of chalcone-based dithiocarbamate derivative incorporated sol–gel for the removal of Hg (II) ion from water
| Autor: | Kheng Soo Tay, Soo Wei Khor, Mhd Radzi Bin Abas, Yean Kee Lee |
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| Rok vydání: | 2017 |
| Předmět: |
Chalcone
Langmuir Inorganic chemistry 02 engineering and technology 010501 environmental sciences 01 natural sciences Biomaterials Metal symbols.namesake chemistry.chemical_compound Adsorption Monolayer Materials Chemistry Freundlich equation Dithiocarbamate 0105 earth and related environmental sciences chemistry.chemical_classification Langmuir adsorption model General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electronic Optical and Magnetic Materials chemistry visual_art Ceramics and Composites symbols visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Journal of Sol-Gel Science and Technology. 82:834-845 |
| ISSN: | 1573-4846 0928-0707 |
| Popis: | This study demonstrated the application of chalcone-based dithiocarbamate derivative as metal capturing ligand for the removal of mercury ion (Hg2+) in water. Chalcones are a group of naturally occurring compounds which can be obtained from fruits, vegetables, plants, and spice. In this study, chalcone was first chemically modified to produce dithiocarbamate derivative (ODPPNE). Chalcone and ODPPNE were then incorporated into sol–gel to produce SG-C and SG-ODPPNE, respectively, as adsorbents. The result from the adsorption study showed that with the presence of dithiocarbamate functional group, SG-ODPPNE exhibited the highest selectivity toward the adsorption of Hg2+ with lesser response to Cr3+, Ni2+, Cu2+, Zn2+, Cd2+, and Pb2+. The adsorption of Hg2+ by SG-ODPPNE was found to be adsorbent size, adsorbent dosage, contact time, the initial concentration of sorbate and pH dependent. The obtained experimental data were also analyzed using Freundlich and Langmuir adsorption models. The results showed that the adsorption data were well-fitted to Langmuir isotherm, and the monolayer absorption capacity was found to be 13.5 mg/g. In the absorption kinetic study, the data was analyzed using pseudo-first-order, pseudo-second-order kinetic model, and intraparticle diffusion model. The obtained data were well-fitted to pseudo-second order model. According to intraparticle diffusion model, the adsorption process of Hg2+ by SG-ODPPNE involves film diffusion, intraparticle diffusion, and equilibrium stages. |
| Databáze: | OpenAIRE |
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