Removal of Pb(II) and Cr(VI) by laterite soil from synthetic waste water: single and bi-component adsorption approach
| Autor: | Prasenjit Mondal, Lokendra Singh Thakur, Sayan Mitra, Vineet Kumar Rathore |
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| Rok vydání: | 2015 |
| Předmět: |
Chromatography
Aqueous solution Chemistry Batch reactor Kinetics chemistry.chemical_element Ocean Engineering 02 engineering and technology 010501 environmental sciences engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Pollution Chromium Adsorption Wastewater Laterite engineering Freundlich equation 0210 nano-technology 0105 earth and related environmental sciences Water Science and Technology Nuclear chemistry |
| Zdroj: | Desalination and Water Treatment. 57:18406-18416 |
| ISSN: | 1944-3986 1944-3994 |
| DOI: | 10.1080/19443994.2015.1088806 |
| Popis: | Adsorption of Pb(II) and Cr(VI) on laterite soil adsorbent from aqueous solution has been studied as a function of pH, contact time, adsorbent dose, and initial concentration through single and bi-component approach in batch reactor. The optimum conditions for both metals are found as pH 6, contact time 240 min, adsorbent dose 10 g/L, and initial concentration 20 mg/L for single component adsorption. Kinetics and equilibrium adsorption data of single component adsorption fit well to the pseudo-second-order kinetic model and Freundlich isotherm model, respectively. Under the experimental conditions, adsorption of Pb(II) is found to be more than that of Cr(VI) for both single component and bi-component systems. The combined adsorptions of Pb(II) and Cr(VI) in single and bi-component systems do not differ much. The extended Freundlich model is found to best represent the equilibrium adsorption phenomena in bi-component system. |
| Databáze: | OpenAIRE |
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