A new approach to improve sulfate uptake from contaminated aqueous solution: Metal layered double hydroxides functionalized metasomatic rock
| Autor: | Amirreza Azadmehr, Bahareh Sadeghalvad, Ardeshir Hezarkhani |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Exothermic reaction
Aqueous solution Chemistry Process Chemistry and Technology General Chemical Engineering Layered double hydroxides Filtration and Separation 02 engineering and technology General Chemistry 010501 environmental sciences engineering.material 01 natural sciences Metal chemistry.chemical_compound Adsorption 020401 chemical engineering Chemical engineering Chemisorption visual_art Monolayer engineering visual_art.visual_art_medium 0204 chemical engineering Sulfate 0105 earth and related environmental sciences |
| Zdroj: | Separation Science and Technology. 54:447-466 |
| ISSN: | 1520-5754 0149-6395 |
| DOI: | 10.1080/01496395.2018.1518334 |
| Popis: | In this study, waste rock of iron ore mine (metasomatic rocks) has been modified and utilized as a sulfate adsorbent to enhance sulfate removal from contaminated aqueous solution. The modification generating from the assembly of Mg–Al and Ni–Al layered double hydroxides and metasomatic rocks. The sulfate adsorption onto both adsorbents was performed favorably as a monolayer adsorption in homogeneous condition. The kinetic studies identify the chemisorption mechanism of sulfate adsorption process onto both adsorbents with the combination of the film-mass transfer and internal diffusion. Thermodynamic studies indicate that sulfate adsorption process onto both adsorbents was exothermic and spontaneous. |
| Databáze: | OpenAIRE |
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