Amides as a model system of low molar mass algal organic matter. Influence on the adsorption of p-nitrophenol on activated carbon
| Autor: | Branislav Jović, Vukoslava Miškov, Marina Kovacevic, Branko Kordić, Slobodan D. Petrović, Jelena Tričković |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Powdered activated carbon treatment
Chemistry(all) General Chemical Engineering Inorganic chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences lcsh:Chemistry symbols.namesake Nitrophenol chemistry.chemical_compound Adsorption Mass transfer medicine P-nitrophenol Mass transfer coefficient Natural organic matter Molar mass Chemistry General Chemistry 021001 nanoscience & nanotechnology Amides 0104 chemical sciences Gibbs free energy lcsh:QD1-999 Chemical Engineering(all) symbols 0210 nano-technology Activated carbon medicine.drug |
| Zdroj: | Arabian Journal of Chemistry, Vol 13, Iss 1, Pp 59-66 (2020) Arabian Journal of Chemistry |
| ISSN: | 1878-5352 |
| Popis: | In this study, the adsorption equilibrium and diffusivity parameters of p-nitrophenol were estimated for water containing different concentrations of secondary amides. Commercial powdered activated carbon was used as an adsorbent. The external mass transfer coefficient (kf), the surface diffusion coefficient (Ds) and the standard free Gibbs energy were calculated for p-nitrophenol in the presence of different secondary amide concentrations. The analysis established that there are correlations between structural parameters of amides, on the one hand, and diffusion and thermodynamic parameters for p-nitrophenol adsorption process, on the other. It was noticed that voluminous hydrophobic amides decreased the adsorption capacity of p-nitrophenol on activated carbon. On the basis of the results obtained for external mass transfer coefficients, it is assumed that amides cause the reduction of adsorption capacity of p-nitrophenol onto activated carbon by concentrating at the solid/liquid interface. Keywords: Adsorption, Amides, Natural organic matter, P-nitrophenol |
| Databáze: | OpenAIRE |
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