Mass-energy balance analysis for estimation of light energy conversion in an integrated system of biological H2 production

Document Type: Research Paper

Authors

1 Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.

2 Institute of Physiology and Biochemistry of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.

3 LLC “Ecoproject”, Mytishchi, 141014, Moscow Region, Russia.

Abstract

The present study investigated an integrated system of biological H2 production, which includes the accumulation of biomass of autotrophic microalgae, dark fermentation of biomass, and photofermentation of the dark fermentation effluent. Particular emphasis was placed on the estimation of the conversion efficiency of light into hydrogen energy at each stage of this system. For this purpose, the mass and energy balance regularities were applied. The efficiency of the energy transformation from light into the microalgal biomass did not exceed 5%. The efficiency of the energy transformation from biomass to biological H2 during the dark fermentation stage stood at about 0.3%. The photofermentation stage using the model fermentation effluent could improve this estimation to 11%, resulting in an overall efficiency 0.55%. Evidently, this scheme is counterproductive for light energy bioconversion due to numerous intermediate steps even if the best published data would be taken into account.

Graphical Abstract

Mass-energy balance analysis for estimation of light energy conversion in an integrated system of biological H2 production

Keywords


Asatiani, V., 1969. Enzymatic methods of analysis (Russ). Nauka, Moscow.

Hanson, R., Phillips, G., 1984. Chemical composition of bacterial cell, in: Gerhardt, P. et al., (Eds.), Manual of Methods for General Bacteriology (Russian translation). Mir, Moscow, pp. 283-375.

Harris, E.H., 1989. The Chlamydomonas Sourcebook: A comprehensive guide to biology and laboratory use. Academic Press, San Diego, pp. 780.

Ike, A., Toda, N., Murakawa, T., Hirata, K., Miyamoto, K., 1998. Hydrogen photoproduction from starch in CO2-fixing microalgal biomass by a halotolerant bacterial community, in: Zaborsky, O.R. (Ed.), Biohydrogen. Plenum Press, NY, pp. 311-318.

Ike, A., Kawaguchi, H., Hirata, K., Miyamoto K., 2001. Hydrogen photoproduction from starch in algal biomass, in: Miyake, J., Matsunaga, T., San Pietro, A. (Eds.), Biohydrogen II: an approach to environmentally acceptable technology. Pergamon, Amsterdam, pp. 53-61.

Klass, D. L., 1998. Biomass for Renewable Energy, Fuels, and Chemicals. Academic Press, San Diego, CA.

Lyubimov, V.I., L`vov, N.P., Kirshteine, B.E., 1968. Modification of the microdiffusion method for ammonium determination. Prikl. Biochim. Microbiol. 4, 120-121.

Tsygankov, A.A., Abdullatypov, A., 2015. Hydrogen Metabolism in Microalgae,  in: Allakhverdiev, S.I. (Ed.), Photosynthesis: New Approaches to the Molecular, Cellular, and Organismal Levels, Wiley-Scrivener, Beverly, pp. 133-162.