Biogas and its opportunities—A review

doi:10.1007/s11783-018-1037-8

Front. Environ. Sci. Eng.

2018, Vol. 12

Issue (3) : 14 https://doi.org/10.1007/s11783-018-1037-8

FEATURE ARTICLE

Biogas and its opportunities—A review

Panagiotis G. Kougias(

), Irini Angelidaki

Department of Environmental Engineering, Technical University of Denmark, Kgs. Lyngby DK-2800, Denmark

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Abstract

A comprehensive description of the biogas process is presented.

Main operational parameters influencing the biogas process are reviewed.

A historical overview of the biogas development is extensively presented.

The current status of anaerobic digestion for biogas production is discussed.

New horizons for exploitation and utilisation of biogas are proposed.

Biogas production is a well-established technology primarily for the generation of renewable energy and also for the valorization of organic residues. Biogas is the end product of a biological mediated process, the so called anaerobic digestion, in which different microorganisms, follow diverse metabolic pathways to decompose the organic matter. The process has been known since ancient times and was widely applied at domestic households providing heat and power for hundreds of years. Nowadays, the biogas sector is rapidly growing and novel achievements create the foundation for constituting biogas plants as advanced bioenergy factories. In this context, the biogas plants are the basis of a circular economy concept targeting nutrients recycling, reduction of greenhouse gas emissions and biorefinery purposes. This review summarizes the current state-of-the-art and presents future perspectives related to the anaerobic digestion process for biogas production. Moreover, a historical retrospective of biogas sector from the early years of its development till its recent advancements gives an outlook of the opportunities that are opening up for process optimisation.

Keywords Anaerobic digestion Biogas Biowastes Solid waste Manure Industrial waste

Corresponding Author(s): Panagiotis G. Kougias

Issue Date: 27 April 2018

Cite this article:

Panagiotis G. Kougias,Irini Angelidaki. Biogas and its opportunities—A review[J]. Front. Environ. Sci. Eng., 2018, 12(3): 14.

URL:

https://academic.hep.com.cn/fese/EN/10.1007/s11783-018-1037-8
https://academic.hep.com.cn/fese/EN/Y2018/V12/I3/14

Tab.1 Methane yield of various organic residues

Tab.2 Theoretical methane yield of typical compounds

Fig.1 Annual number of scientific articles indexed in “Scopus” and “Web of Science” databases based on the keyword “biogas”. The decreased number of “Web of Science” for year 2017 is attributed to the time needed for the database to be updated

Fig.2 Representation of the functional roles of the microbial species involved in the different steps of AD process resembles a funnel as reported by Campanaro and collaborators [⁸⁸]. The species involved at each step of AD can be found at the original Figure of the cited article [⁸⁸]

Fig.3 Biogas plants in Europe by end 2015 [⁹²]

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