Anaerobic Biofilm Systems for Biogas Production

In this study two laboratory-scale anaerobic biofilm reactors were run in parallel, one with fixed and one with moving biofilm carriers. The purpose of our work was to compare the biogas production and the COD removal efficiency of the two systems.

Bővebben: Anaerobic Biofilm Systems for Biogas Production

Microbal Fuel Cells

Microbial fuel cells (MFCs) are bio-electrochemical devices capable to generate power by the activity of certain microorganisms. The traditional MFCs consist of an anode and a cathode chambers, separated by a cation selective membrane. The microbes are located in the anaerobic anode chamber, oxidizing some organic materials and releasing electrons to the anode and protons to the solution (which pass through the membrane towards the cathode). The cathode is sparged with air to provide oxygen for the reactions of electrons, protons and oxygen (forming water).

Bővebben: Microbal Fuel Cells

Biohydrogen Research

Biologically derived hydrogen – commonly called as „biohydrogen" – research is one of the hottest field in bioenergetics due to its inherent advantages over the other kinds of energy resources, particularly its environmental-friendly features and the highest energy content of all the know energy carriers on gravimetric bases (except nuclear reactions).

Although biohydrogen shows a great potential for future's sustainable development, there are still issues pending among which production and purification represents one of the major obstacles to be overcome so as to make it a reliable opportunity.

In recent years, our institute has gained remarkable experience on these two afore-mentioned topics during which both the photo- and the dark fermentative hydrogen generation (using cultures of e.g. Thiocapsa roseopersicina, Thermococcus litoralis, Escherichia coli) and biohydrogen separation employing polymeric and ionic liquid supported membranes were focused. As the results, three Ph.D. theses were successfully defended so far on the related topics in 2008, 2010 and 2012.

The research outcomes have been published (see the list below) in esteemed journals such as International Journal of Hydrogen Energy, Journal of Membrane Science, Desanilation, etc. Furthermore, we have initiated and taken part in a number of domestic and international collaborations with e.g. Czech, Portuguese, Dutch, Taiwanese and Chilean scientists. Last but not least, our accomplishments were awarded in a reputed international competition sponsored by an industrial company (BlueSense GmbH – Bluecompetiton 2011).

List of relevant publications

  • K. Bélafi-Bakó, D. Búcsú Z. Pientka, B. Bálint, Z. Herbel, K.L. Kovács, M. Wessling. Integration of biohydrogen fermentation and gas separation processes to recover and enrich hydrogen. International Journal of Hydrogen Energy 31 (2006) 1490-1495.
  • D. Búcsú, Z. Pientka, K. Bélafi-Bakó. Biohydrogen recovery and purification by gas separation method. Desalination 200 (2006) 227-229.
  • D. Búcsú, N. Nemestóthy, Z. Pientka, K. Bélafi-Bakó. Modelling of biohydrogen production and recovery by membrane gas separation. Desalination 240 (2009) 306-310.
  • L.A. Neves, N. Nemestóthy, V.D. Alves, P. Cserjési, K. Bélafi-Bakó, I.M. Coelhoso. Separation of biohydrogen by supported ionic liquid membranes. Desalination 240 (2009) 311-315.
  • P. Cserjési, N. Nemestóthy, A. Vass, Zs. Csanádi, K. Bélafi-Bakó. Study on gas separation by supported liquid membranes applying novel ionic liquids. Desalination 245 (2009) 743-747.
  • Petra Cserjési, Nándor Nemestóthy, Katalin Bélafi-Bakó. Gas separation properties of supported liquid membranes prepared with unconventional ionic liquids. Journal of Membrane Science 349 (2010) 6-11.
  • K. Bélafi-Bakó, P. Bakonyi, N. Nemestóthy, Z. Pientka. Biohydrogen production in integrated system. Desalination and Water Treatment 2010;14:116-118.
  • P. Bakonyi, N. Nemestóthy, É. Lövitusz, K. Bélafi-Bakó. Application of Plackett-Burman experimental design to optimize biohydrogen fermentation by E. coli (XL1-BLUE) International Journal of Hydrogen Energy 2011;36:13949-13954.
  • P. Bakonyi, N. Nemestóthy, J. Ramirez, G. Ruiz-Filippi, K. Bélafi-Bakó. E. coli (XL1-BLUE) for continuous fermentation of bioH2 and its separation by polyimide membran International Journal of Hydrogen Energy 2012;37:5623-5630.
  • P. Bakonyi, N. Nemestóthy, K. Bélafiné Bakó. Comparative study of various E. coli strains for biohydrogen production applying response surface methodologyn The Scientific World Journal,2012; doi:10.1100/2012/819793.