Abstract
The potential use of activated bentonite as an adsorbent for heavy metals in acid mine drainage (AMD) was investigated. The activated bentonite was characterized as sodium bentonite. 1% solid loading was not effective in neutralization and metal removal. 5% solid loading could neutralize AMD as pH increased from 2.08 to 7.88 after 3 h accompanied with 94.00% Co, 99.88% Fe, and 90.93% Mn removal from AMD. The adsorption process followed the Langmuir isotherm and pseudo second order kinetic models. The maximum adsorption capacities were 0.019, 10.00, 0.441 mg/g for Co, Fe, and Mn, respectively. Co and Fe adsorption were thermodynamically spontaneous while Mn adsorption was not thermodynamically spontaneous. © 2014 WIT Press.
| Original language | English |
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| Pages | 267-274 |
| Number of pages | 8 |
| Publication status | Published - 2014 |
| Event | 2013 International Conference on Biomedical Engineering and Environmental Engineering - Duration: Dec 1 2013 → Dec 2 2013 Conference number: 1 |
Conference
| Conference | 2013 International Conference on Biomedical Engineering and Environmental Engineering |
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| Abbreviated title | ICBEEE 2013 |
| Period | 12/1/13 → 12/2/13 |