Removal of Cr(VI) using co-immobilized activated carbon and Bacillus subtilis: fixed-bed column study
| Autor: | Kuppusamy Vijayaraghavan, Seralathan Kamala-Kannan, K. Shanthi, V. Janaki, C. Sukumar |
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| Rok vydání: | 2016 |
| Předmět: |
021110 strategic
defence & security studies Economics and Econometrics Environmental Engineering Chromatography Aqueous solution Chemistry Elution 0211 other engineering and technologies Biosorption chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences General Business Management and Accounting Volumetric flow rate Chromium Adsorption Column chromatography medicine Environmental Chemistry 0105 earth and related environmental sciences Activated carbon medicine.drug Nuclear chemistry |
| Zdroj: | Clean Technologies and Environmental Policy. 19:251-258 |
| ISSN: | 1618-9558 1618-954X |
| DOI: | 10.1007/s10098-016-1203-2 |
| Popis: | Fixed-bed column studies were conducted to evaluate the potential of co-immobilized (activated carbon and Bacillus subtilis) (CI) beads for the removal of Cr(VI) from aqueous solution. The impact of various parameters such as initial Cr(VI) concentrations (100, 150, and 200 mg/L), flow rate (3, 9, and 15 mL/min), and bed depth (10, 15, and 20 cm) on Cr(VI) adsorption onto CI beads were investigated. The breakthrough time increased with a decrease in initial Cr(VI) concentration and flow rate, and an increase in bed height. The breakthrough data obtained for Cr(VI) removal was more adequately described by the Thomas model with high correlation coefficients (R 2 = 0.982). The eluent, 0.1 M NaOH, provided high elution efficiencies (~90 %) in all the six cycles. Obtained results pointed out that CI beads could potentially be used for the removal of Cr(VI) from aqueous solution. |
| Databáze: | OpenAIRE |
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