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Thisani, S, Vandi Von Kallon, D and Byrne, PA (2021) A fixed bed pervious concrete anaerobic bioreactor for biological sulphate remediation of acid mine drainage using simple organic matter. Sustainability, 12 (12). ISSN 2071-1050
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A fixed bed pervious concrete anaerobic bioreactor for biological sulphate remediation of acid mine drainage using simple organic matter.pdf - Published Version Available under License Creative Commons Attribution. Download (7MB) | Preview |
Abstract
The development of low-operational-cost and low-operational-complexity active sulphate (SO4) reducing bioremediation for Acid Mine Drainage (AMD) is an ongoing pursuit towards sustainable mining. This study introduces a fixed bed pervious concrete anaerobic bioreactor as a second stage AMD remediation process. The study investigated the pH self-regulation capabilities, SO4 remediation capabilities and the rate limiting parameters of the bioreactor using glucose as an organic matter source. The AMD was pre-treated using a permeable reactive barrier. A 21-day trial comprised of an increase in the SO4 loading rate while reducing the organic loading rate was undertaken to identify performance limiting conditions. A daily average SO4 concentration reduction rate of 55.2% was achieved over the initial 13 days of the experiments. The study found that a COD to SO4 ratio and VFA to alkalinity ratio below 5:1 and 0.5:1 respectively were performance limiting. The bioreactor was capable of self-regulating pH within the neutral range of 6.5 and 7.5. The study findings indicate that the bioreactor design can reduce operational costs and operational complexity of active AMD bioremediation.
| Item Type: | Article |
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| Uncontrolled Keywords: | 12 Built Environment and Design |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | Biological & Environmental Sciences (from Sep 19) |
| Publisher: | MDPI AG |
| Related URLs: | |
| Date Deposited: | 09 Jun 2021 08:38 |
| Last Modified: | 04 Sep 2021 05:22 |
| DOI or ID number: | 10.3390/su13126529 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/15120 |
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