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Biogas Production Systems and Upgrading Technologies: A Review 

Martina Andlar1orcid tiny, Halina Belskaya2orcid tiny, Galina Morzak2orcid tiny, Mirela Ivančić Šantek1orcid tiny, Tonči Rezić1orcid tiny, Vlatka Petravić Tominac1orcid tiny and Božidar Šantek1*orcid tiny

1University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, HR-10000 Zagreb, Croatia

2Belarussian National Technical University, Mining Engineering and Engineering Ecology Faculty, Nezavisimosti Ave. 65, BY-220013 Minsk, Belarus

Article history:

Received: 30 April 2021

Accepted: 13 October 2021

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Key words:

anaerobic digestion, biogas production, anaerobic bioreactor configurations, purification and upgrading technologies, digestate


The underutilized biomass and different organic waste streams are today in the focus of research for renewable energy production due to the effusive use of fossil fuels and greenhouse gases emission. In addition, one of the major environmental problems is also a constant increase of the number of organic waste streams. In lot countries, sustainable waste management, including waste prevention and reduction, has become a priority as a means to reduce pollution and greenhouse gas emission. To provide solutions for both energy-related and environmental tasks, application of biogas technologies is one of the promising solutions. This review is aimed to present conventional and novel biogas production systems, as well as purification and upgrading technologies, nowadays applicable in the large scale, with a special focus on the CO2 and H2S removal. It also gives an overview of feedstocks and prominent parameters for biogas production, together with the digestate utilization and application of molecular biology in order to improve the biogas production.

*Corresponding author: +38514605290

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