Phosphorus elimination from aqueous solution using 'zirconium loaded okara' as a biosorbent
| Autor: | Huu Hao Ngo, John L. Zhou, Jie Wang, Heng Liang, Wenshan Guo, Thi An Hang Nguyen, Guanyuan Li |
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| Rok vydání: | 2014 |
| Předmět: |
Environmental Engineering
Inorganic chemistry Kinetics chemistry.chemical_element Bioengineering Endothermic process Water Purification chemistry.chemical_compound Adsorption Polysaccharides Waste Management and Disposal Plant Proteins Molybdenum Zirconium Aqueous solution Renewable Energy Sustainability and the Environment Phosphorus Biosorption Soy Foods General Medicine Phosphate Biodegradation Environmental chemistry Thermodynamics Water Pollutants Chemical |
| Zdroj: | Bioresource technology. 170 |
| ISSN: | 1873-2976 |
| Popis: | This work deals with the capture of phosphorus from aqueous solutions by biosorption onto zirconium loaded okara (ZLO). The batch-mode experiments were conducted to examine the effect of pH, biosorbent dose, initial phosphorus concentration, contact time, and temperature on the process. It was found that, the adsorption was most favored in the pH range of 2–6. The optimal doses for the adsorption, at initial phosphorus concentrations of 5, 10, 25, 50 mg/L were 2, 3, 7, 10 g/L, respectively. The maximum adsorption capacity of ZLO was approximately 44.13 mg PO4/g at 298 K. The phosphate removal was rapid, reaching 95% in 30 min. Freundlich model best fitted the equilibrium data, while Pseudo-second order model satisfactorily described the kinetic results. Thermodynamic analysis revealed feasible, spontaneous, and endothermic nature of the process. The research would be beneficial for developing a promising, eco-friendly phosphorus biosorbent from a plentiful AWB – okara. |
| Databáze: | OpenAIRE |
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