Abstract
This work develops a small-scale microbial fuel cell (MFC) and evaluates their performance in series or in parallel as a tubular MFC (t-MFC) in removing benzene from groundwater and generating electricity. The results indicate that the time required (tr) for t-MFC to remove all benzene was half of that required by a single MFC. The maximum power density (Pmax) of the serially-connected t-MFC was 12.7 mW/m2, a 3.3-fold increase over the single t-MFC. An optimal benzene removal efficiency with a tr of four days was achieved under persistent aeration at the cathode of the t-MFC, and this tr was 1.25–3-fold lower than those obtained under other aeration conditions. Tubular MFCs connected in series had a higher open-circuited voltage (655 mV) and a lower tr, but the Pmax and maximum current density of the parallelly-connected t-MFC were 3.8 and 1.5 times those of the t-MFC with a serial connection. Intermittent aerating of the cathode improved the removal of benzene and the generation of electricity in a t-MFC by providing sufficient levels of oxygen for the reaction to achieve Pmax. The small t-MFC was easily scaled up by stacking MFCs in series mode, with great potential for field-scale application for in situ bioremediation in hydrocarbon-contaminated groundwater.
| Original language | English |
|---|---|
| Pages (from-to) | 78-84 |
| Number of pages | 7 |
| Journal | Journal of Cleaner Production |
| Volume | 194 |
| DOIs | |
| Publication status | Published - 2018 Sep 1 |
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All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Environmental Science(all)
- Strategy and Management
- Industrial and Manufacturing Engineering
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Increasing removal of benzene from groundwater using stacked tubular air-cathode microbial fuel cells. / Liu, Shu Hui; Lai, Chi-Yung; Ye, Jhe Wei; Lin, Chi Wen.
In: Journal of Cleaner Production, Vol. 194, 01.09.2018, p. 78-84.Research output: Contribution to journal › Article
TY - JOUR
T1 - Increasing removal of benzene from groundwater using stacked tubular air-cathode microbial fuel cells
AU - Liu, Shu Hui
AU - Lai, Chi-Yung
AU - Ye, Jhe Wei
AU - Lin, Chi Wen
PY - 2018/9/1
Y1 - 2018/9/1
N2 - This work develops a small-scale microbial fuel cell (MFC) and evaluates their performance in series or in parallel as a tubular MFC (t-MFC) in removing benzene from groundwater and generating electricity. The results indicate that the time required (tr) for t-MFC to remove all benzene was half of that required by a single MFC. The maximum power density (Pmax) of the serially-connected t-MFC was 12.7 mW/m2, a 3.3-fold increase over the single t-MFC. An optimal benzene removal efficiency with a tr of four days was achieved under persistent aeration at the cathode of the t-MFC, and this tr was 1.25–3-fold lower than those obtained under other aeration conditions. Tubular MFCs connected in series had a higher open-circuited voltage (655 mV) and a lower tr, but the Pmax and maximum current density of the parallelly-connected t-MFC were 3.8 and 1.5 times those of the t-MFC with a serial connection. Intermittent aerating of the cathode improved the removal of benzene and the generation of electricity in a t-MFC by providing sufficient levels of oxygen for the reaction to achieve Pmax. The small t-MFC was easily scaled up by stacking MFCs in series mode, with great potential for field-scale application for in situ bioremediation in hydrocarbon-contaminated groundwater.
AB - This work develops a small-scale microbial fuel cell (MFC) and evaluates their performance in series or in parallel as a tubular MFC (t-MFC) in removing benzene from groundwater and generating electricity. The results indicate that the time required (tr) for t-MFC to remove all benzene was half of that required by a single MFC. The maximum power density (Pmax) of the serially-connected t-MFC was 12.7 mW/m2, a 3.3-fold increase over the single t-MFC. An optimal benzene removal efficiency with a tr of four days was achieved under persistent aeration at the cathode of the t-MFC, and this tr was 1.25–3-fold lower than those obtained under other aeration conditions. Tubular MFCs connected in series had a higher open-circuited voltage (655 mV) and a lower tr, but the Pmax and maximum current density of the parallelly-connected t-MFC were 3.8 and 1.5 times those of the t-MFC with a serial connection. Intermittent aerating of the cathode improved the removal of benzene and the generation of electricity in a t-MFC by providing sufficient levels of oxygen for the reaction to achieve Pmax. The small t-MFC was easily scaled up by stacking MFCs in series mode, with great potential for field-scale application for in situ bioremediation in hydrocarbon-contaminated groundwater.
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U2 - 10.1016/j.jclepro.2018.05.138
DO - 10.1016/j.jclepro.2018.05.138
M3 - Article
AN - SCOPUS:85048154582
VL - 194
SP - 78
EP - 84
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
SN - 0959-6526
ER -