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Abstract: The use of algae as a potential substrate in biogas production processes has been discussed sporadically, therefore this manuscript provides an overview of reference data published so far on that matter. The goal of this review is to present possibilities of applying algae biomass for biogas production purposes and to determine the effectiveness of the fermentation process of algae belonging to various taxonomic groups, originating from various biocenoses and characterized by different morphology and properties. Finally, this work reports on methods and technological solutions for algae biomass production as well as impediments and opportunities stemming from algae biomass use in biogas production technologies. [Copyright &y& Elsevier]

Our study was undertaken in order to determine the effects of preliminary hydrothermal depolymerization and enzymatic hydrolysis of macroalgae biomass originating from the Vistula Lagoon on yield of the methane fermentation process in terms of quantity and quality of produced biogas. The process of enzymatic hydrolysis was conducted with a mixture of enzymes: Cellulast 1.5 L, Novozym 188, and Hemicellulase. In turn, the process of hydrothermal depolymerization was run for 120 minutes at 200ºC under a pressure of 1.7 MPa. The processed plant substrate was next subjected to mesophilic fermentation. The application of enzymatic hydrolysis contributed to an increased quantity of and improved qualitative composition of biogas produced. [ABSTRACT FROM AUTHOR]