TY - JOUR
T1 - Effects of anode materials in electricity generation of microalgal-biophotovoltaic system – part II
T2 - Free-floating microalgae in aeration mode
AU - Chin, Jia Chun
AU - Khor, Wei Han
AU - Ng, Fong Lee
AU - Chong, William Woei Fong
AU - Wu, Yun Ta
AU - Kang, Hooi Siang
N1 - Funding Information:
The authors would like to express gratitude to the financial support from UTM Industry-International Incentive Grant (Q.J130000.3609.03M42) and L'Oreal-UNESCO FWIS fellowship (R.J130000.7351.4B633). The authors also acknowledge the supports from the Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU).
Publisher Copyright:
© 2022
PY - 2022/1
Y1 - 2022/1
N2 - A biophotovoltaic (BPV) system is a developing renewable energy technology that promises carbon-free electricity generation from solar energy, by utilizing photosynthetic exoelectrogenic microorganisms. The electrical power production of BPV devices, on the other hand, is relatively low, and this has become a significant challenge for this new technology. Sufficient supply would require large-scale BPV farms for megawatt applications, which may not be economically viable. A possible solution is to acquire bioelectricity from algae cultivation medium, as it benefits the system in terms of volume. Moreover, it enables combination with an algae pool or floating photobioreactor. One technical concern is that previous studies focused on the absorption of electrons from cultivated biofilm, whereas bioelectricity generation by aerated algae cultivation medium under different anode materials still has research value. Hence, cell performance by well-mixed anodic algae cultivation medium under different anode materials is a crucial decision-making factor of BPV device in aeration mode. In this study, the experiments were repeated three times to compare the performances of various anode-based devices. In the experiments, indium tin oxide (ITO)-coated glass-based BPV device produced a steady power output, comparable to those of graphite- and ITO-coated plastic-based BPV devices. Maximum power densities of 0.659 mW/m2, 0.437 mW/m2, and 0.059 mW/m2, respectively, were obtained in each repeated condition. The findings are expected to contribute to further understanding on the correlation of these parameters, with regards to power generation of the BPV devices.
AB - A biophotovoltaic (BPV) system is a developing renewable energy technology that promises carbon-free electricity generation from solar energy, by utilizing photosynthetic exoelectrogenic microorganisms. The electrical power production of BPV devices, on the other hand, is relatively low, and this has become a significant challenge for this new technology. Sufficient supply would require large-scale BPV farms for megawatt applications, which may not be economically viable. A possible solution is to acquire bioelectricity from algae cultivation medium, as it benefits the system in terms of volume. Moreover, it enables combination with an algae pool or floating photobioreactor. One technical concern is that previous studies focused on the absorption of electrons from cultivated biofilm, whereas bioelectricity generation by aerated algae cultivation medium under different anode materials still has research value. Hence, cell performance by well-mixed anodic algae cultivation medium under different anode materials is a crucial decision-making factor of BPV device in aeration mode. In this study, the experiments were repeated three times to compare the performances of various anode-based devices. In the experiments, indium tin oxide (ITO)-coated glass-based BPV device produced a steady power output, comparable to those of graphite- and ITO-coated plastic-based BPV devices. Maximum power densities of 0.659 mW/m2, 0.437 mW/m2, and 0.059 mW/m2, respectively, were obtained in each repeated condition. The findings are expected to contribute to further understanding on the correlation of these parameters, with regards to power generation of the BPV devices.
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U2 - 10.1016/j.matpr.2022.03.576
DO - 10.1016/j.matpr.2022.03.576
M3 - Article
AN - SCOPUS:85129569036
SN - 2214-7853
VL - 65
SP - 2992
EP - 2999
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
ER -