Kinetics, Thermodynamics, and Competitive Adsorption of Heavy Metals from Water Using Orange Biomass
Adsorption of heavy metals on modified orange biomass has been studied. This biomass was treated with NaOH and CaCl₂ to improve its adsorption properties. Kinetic and thermodynamic studies of the adsorption of Cd2+, Ni2+, Cu2+, and Zn2+ were performed at different operating conditions, including c...
| Veröffentlicht in: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 90(2018), 12 vom: 01. Dez., Seite 2114-2125 |
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| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2018
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| Zugriff auf das übergeordnete Werk: | Water environment research : a research publication of the Water Environment Federation |
| Schlagworte: | Journal Article Metals, Heavy Water Pollutants, Chemical |
| Zusammenfassung: | Adsorption of heavy metals on modified orange biomass has been studied. This biomass was treated with NaOH and CaCl₂ to improve its adsorption properties. Kinetic and thermodynamic studies of the adsorption of Cd2+, Ni2+, Cu2+, and Zn2+ were performed at different operating conditions, including competitive adsorption studies with binary metallic mixtures. Results show that this adsorption process was endothermic where an ion exchange mechanism played a relevant role. Adsorbent effectiveness decreased in binary solutions, indicating a strong antagonistic adsorption behavior caused by counter-ions. This antagonistic adsorption was highly dependent on the counter-ion type and its concentration. Multicomponent adsorption of Cu2+ ions was not significantly affected by the presence of other metallic counter-ions, whereas the adsorption of Ni2+ could be totally suppressed by the other ions. The modeling of binary adsorption isotherms was successful using the modified Langmuir equation, which outperformed the Ideal Absorbed Solution Theory-Sips and modified Redlich-Peterson models |
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| Beschreibung: | Date Completed 14.03.2019 Date Revised 14.03.2019 published: Print Citation Status MEDLINE |
| ISSN: | 1554-7531 |
| DOI: | 10.2175/106143017X15131012188321 |