Abstract
The paper describes the anaerobic digestion of biomass of microalgae and bacteria from the treatment of wastewater from municipal sources and malt house. During the three series of experiments the influence of primary sludge addition, type of biomass and the substrate to inoculum ratio on anaerobic digestion and biogas production was investigated. The results showed that the composition of the substrate plays an important role. Digesters with added primary sludge reached stationary phase faster than without added sludge digesters but the specific biogas production was not higher. Regarding the suitable substrate to inoculum ratio the most suitable ratio is 2:1 (inoculum:biomass). Biomass from municipal wastewater treatment produced up to 186 L kg−1 OM at 2:1 ratio of inoculum to biomass. Substrate from malt house wastewater treatment produced less biogas, 126 L kg−1 OM at 2:1 ratio of inoculum to biomass. Methane content in the gas at the end of the experiment varied between 60 and 75 %.
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Acknowledgments
This paper has been worked out under the project No. LO1408 “AdMaS UP - Advanced Materials, Structures and Technologies”, supported by Ministry of Education, Youth and Sports under the “National Sustainability Programme I” and under the project ALBAPRO supported by Ministry of Industry and Trade of the Czech Republic. This study was performed as part of the project ALBAPRO within the framework Era-Net/CORNET for transnational collective research. The financial support provided by a grant of the Ministry of Industry and Trade of the Czech Republic via Operational Programme Industry and Enterprise (OPIE) is greatly acknowledged. The authors also acknowledge Brněnské vodárny a kanalizace, a.s. and Sladovna BERNARD, a.s. for the access to the study area.
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Hlavínek, P., Stříteský, L., Pešoutová, R. et al. Biogas Production from Algal Biomass from Municipal Wastewater Treatment. Waste Biomass Valor 7, 747–752 (2016). https://doi.org/10.1007/s12649-016-9488-2
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DOI: https://doi.org/10.1007/s12649-016-9488-2