Energy Production from Marine Biomass: Fuel Cell Power Generation Driven by Methane Produced from Seaweed

Authors: Shinya Yokoyama, Katsunari Jonouchi, Kenji Imou

Abstract:

This paper discusses the utilization of marine biomass as an energy resource in Japan. A marine biomass energy system in Japan was proposed consisting of seaweed cultivation (Laminaria japonica) at offshore marine farms, biogas production via methane fermentation of the seaweeds, and fuel cell power generation driven by the generated biogas. We estimated energy output, energy supply potential, and CO2 mitigation in Japan on the basis of the proposed system. As a result, annual energy production was estimated to be 1.02-109 kWh/yr at nine available sites. Total CO2 mitigation was estimated to be 1.04-106 tonnes per annum at the nine sites. However, the CO2 emission for the construction of relevant facilities is not taken into account in this paper. The estimated CO2 mitigation is equivalent to about 0.9% of the required CO2 mitigation for Japan per annum under the Kyoto Protocol framework.

Keywords: CO2 mitigation, Fuel cell power generation, Laminaria japonica, Marine biomass, Seaweed.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1334728

References:

[1] Chynoweth, D. P. 2002. Review of biomethane from marine biomass. Available from David P. Chynoweth web site at http://www.agen.ufl.edu/~chyn/index.htm.
[2] Japan Ocean Industries Association (JOIA). 1984. FY Showa 58, Investigation into fuel production from marine biomass, the second report: "total system" (FY Showa 58 nendo, Kaiyo biomass niyoru nenryo-yu seisan ni kansuru chosa, seika houkokusho, dai-2-bu; "total system"). (in Japanese).
[3] Chynoweth, D. P., Turick, C. E., Owens, J. M. Jerger, D.E., and Peck, M. W. 1993. Biochemical methane potential of biomass and waste feedstocks, Biomass and Bioenergy 5(1): 95-111.
[4] Critchy, A. T. and Ohno, M. (eds). 1998. Seaweed Resources of the World. JICA. Available at JICA Yokohama, Japan.
[5] Larminie, J. and Dicks, A. 2004. translated by Tsuchiya, H. Fuel cell systems explained. Tokyo: Ohmsha. (in Japanese). (This book was originally published in English by John Wiley and Sons in 2003).
[6] Staniforth, J. and Kendall, K. 1998. Biogas powering a small solid oxide fuel cell. Journal of Power Sources 71: 275-277.
[7] Staniforth, J. and Ormerod, R. M. 2003. Running solid oxide fuel cells on biogas. Ionics 9: 336-341.
[8] Van herle, J., Marechal, F., Leuenberger, S., and Favrat, D. 2003. Energy balance model of a SOFC cogenerator operated with biogas. Journal of Power Sources 118: 375-383.
[9] Van herle, J., Membrez, Y., and Bucheli, O. 2004. Biogas as a fuel source for SOFC co-generators. Journal of Power Sources 127: 300-312.
[10] Van herle, J., Marecal, F., Leuenbergaer, S., Membrez, Y., Bucheli, O., and Favrat, D. 2004. Process flow model of solid oxide fuel cell system supplied with sewage biogas. Journal of Power Sources 131: 127-141.
[11] Ministry of Land, Infrastructure and Transport, Hokkaido Regional Development Bureau web site at http://www.hkd.mlit.go.jp/zigyoka/z_kowan/index.html.
[12] Tahara, K., Kojima, T., Inaba, A. Ogi, T., and Yokoyama, S. 1998. Reduction in CO2 emission by biomass power generation with sustainable afforestation evaluated by LCA. Journal of the Japan Institute of Energy 77(5): 403-409.