Investigation of nigrosine, alizarin, indigo and acid fuchsin removal by modification of CaO derived from eggshell with AgI: Adsorption, kinetic and photocatalytic studies
| Autor: | Zaki N. Kadhim, Mouayed A. Hussein, Ibtighaa K. Radhi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Scanning electron microscope Nanoparticle 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology Alizarin 01 natural sciences Acid fuchsin Indigo chemistry.chemical_compound Adsorption chemistry Photocatalysis 0210 nano-technology 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | European Journal of Chemistry. 10:64-71 |
| ISSN: | 2153-2257 2153-2249 |
| DOI: | 10.5155/eurjchem.10.1.64-71.1820 |
| Popis: | Successful removal of nigrosine, alizarin, indigo and acid fuchsin dyes from aqueous solutions using modified CaO nanoparticles has been investigated. The CaO was obtained from eggshells and modified with AgI. The adsorbents were characterized using X-ray diffraction, energy dispersive X-ray spectroscopy, scanning electron microscopy and transmission electron microscopy. The kinetic studies were also investigated, the results showed that the adsorption of alizarin dye follows the pseudo-first-order model, while the adsorption of the nigrosine, indigo, and acid fuchsin follow the pseudo-second-order model onto modified and unmodified CaO. Moreover, the photocatalytic activity of modified adsorbent was tested under sunlight. The modified adsorbent showed a strong photocatalytic activity, a 0.01 g modified adsorbent was sufficient to absorb 100% of acid fuchsin through only 5 min after exposes to sunlight. |
| Databáze: | OpenAIRE |
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