Removal of Cr(VI) using co-immobilized activated carbon and <Emphasis Type="Italic">Bacillus subtilis</Emphasis>: fixed-bed column study |
| |
| Authors: | C Sukumar V Janaki K Vijayaraghavan S Kamala-Kannan K Shanthi |
| |
| Affiliation: | 1.Department of Environmental Science,PSG College of Arts and Science,Coimbatore,India;2.Department of Chemistry,Paavai Engineering College,Namakkal,India;3.Department of Chemical Engineering,Indian Institute of Technology Madras,Chennai,India;4.Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences,Chonbuk National University,Iksan,South Korea |
| |
| Abstract: | 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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
