Abstract
Upscaling bioelectrochemical systems needs a proper operational mode to integrate them to the units operating in pilot and industrial scales. This study conducted a comprehensive investigation on combining the advantages of conventional batch and continuous operational modes in form of a simple and efficient looped configuration system, while reducing the drawbacks of each. In this regard, nine various recirculation batch (RB) systems with various recirculation to reactor volume ratios and with different recirculation flow rates were thoroughly evaluated and compared to the results of batch and continuous modes of operation. Recirculation rate and volume were both effective factors on system performance. The highest power density of 38 W/m3 was achieved amongst the various studied RB systems, which showed 40% and 32% of improvement compared to batch and continuous systems respectively. Cyclic voltammetry test approved 3.6 and 2.1 times increment of oxidation peak in the optimised RB system compared to the batch and continuous systems respectively. Moreover, electrochemical impedance spectroscopy analysis showed the significant reduction of charge transfer resistance in RB system. Rather than high energy outputs, the proposed operational mode showed promising results on reducing the waste treatment duration by 12.5 and 3 times compared to the batch and continuous systems respectively while achieving the COD and pH close to the releasing requirements.
| Language | English |
|---|---|
| Pages | 2544-2555 |
| Number of pages | 12 |
| Journal | Journal of Cleaner Production |
| Volume | 142 |
| DOIs | |
| State | Published - 20 Jan 2017 |
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Keywords
- Bioelectrochemical system
- Operational mode
- Recirculation batch
- Scale-up
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Environmental Science(all)
- Strategy and Management
- Industrial and Manufacturing Engineering
Cite this
Assessment of recirculation batch mode of operation in bioelectrochemical system; a way forward for cleaner production of energy and waste treatment. / Jafary, Tahereh; Daud, Wan Ramli Wan; Ghasemi, Mostafa; Kim, Byung Hong; Bakar, Mimi Hani Abu; Jahim, Jamaliah Md; Ismail, Manal; Satar, Ibdal; Kamaruzzaman, Mohd Aidil.
In: Journal of Cleaner Production, Vol. 142, 20.01.2017, p. 2544-2555.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Assessment of recirculation batch mode of operation in bioelectrochemical system; a way forward for cleaner production of energy and waste treatment
AU - Jafary,Tahereh
AU - Daud,Wan Ramli Wan
AU - Ghasemi,Mostafa
AU - Kim,Byung Hong
AU - Bakar,Mimi Hani Abu
AU - Jahim,Jamaliah Md
AU - Ismail,Manal
AU - Satar,Ibdal
AU - Kamaruzzaman,Mohd Aidil
PY - 2017/1/20
Y1 - 2017/1/20
N2 - Upscaling bioelectrochemical systems needs a proper operational mode to integrate them to the units operating in pilot and industrial scales. This study conducted a comprehensive investigation on combining the advantages of conventional batch and continuous operational modes in form of a simple and efficient looped configuration system, while reducing the drawbacks of each. In this regard, nine various recirculation batch (RB) systems with various recirculation to reactor volume ratios and with different recirculation flow rates were thoroughly evaluated and compared to the results of batch and continuous modes of operation. Recirculation rate and volume were both effective factors on system performance. The highest power density of 38 W/m3 was achieved amongst the various studied RB systems, which showed 40% and 32% of improvement compared to batch and continuous systems respectively. Cyclic voltammetry test approved 3.6 and 2.1 times increment of oxidation peak in the optimised RB system compared to the batch and continuous systems respectively. Moreover, electrochemical impedance spectroscopy analysis showed the significant reduction of charge transfer resistance in RB system. Rather than high energy outputs, the proposed operational mode showed promising results on reducing the waste treatment duration by 12.5 and 3 times compared to the batch and continuous systems respectively while achieving the COD and pH close to the releasing requirements.
AB - Upscaling bioelectrochemical systems needs a proper operational mode to integrate them to the units operating in pilot and industrial scales. This study conducted a comprehensive investigation on combining the advantages of conventional batch and continuous operational modes in form of a simple and efficient looped configuration system, while reducing the drawbacks of each. In this regard, nine various recirculation batch (RB) systems with various recirculation to reactor volume ratios and with different recirculation flow rates were thoroughly evaluated and compared to the results of batch and continuous modes of operation. Recirculation rate and volume were both effective factors on system performance. The highest power density of 38 W/m3 was achieved amongst the various studied RB systems, which showed 40% and 32% of improvement compared to batch and continuous systems respectively. Cyclic voltammetry test approved 3.6 and 2.1 times increment of oxidation peak in the optimised RB system compared to the batch and continuous systems respectively. Moreover, electrochemical impedance spectroscopy analysis showed the significant reduction of charge transfer resistance in RB system. Rather than high energy outputs, the proposed operational mode showed promising results on reducing the waste treatment duration by 12.5 and 3 times compared to the batch and continuous systems respectively while achieving the COD and pH close to the releasing requirements.
KW - Bioelectrochemical system
KW - Operational mode
KW - Recirculation batch
KW - Scale-up
UR - http://www.scopus.com/inward/record.url?scp=85006356004&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85006356004&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2016.11.022
DO - 10.1016/j.jclepro.2016.11.022
M3 - Article
VL - 142
SP - 2544
EP - 2555
JO - Journal of Cleaner Production
T2 - Journal of Cleaner Production
JF - Journal of Cleaner Production
SN - 0959-6526
ER -