Packing materials for biotrickling filters used in biogas upgrading – biomethanation
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Kuupäev
2021
Kättesaadav alates
Autorid
Kusnere, Z.
Spalvins, K.
Blumberga, D.
Veidenbergs, I.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
One of the promising methods of biogas upgrading is biological methanation
(biomethanation). During biomethanation process hydrogenotrophic microorganisms use carbon
dioxide from biogas and added hydrogen to generate biomethane. Application of biotrickling
filter reactors is one of the prospective biotechnologies for methanation where hydrogenotrophic
methanogens are immobilized over a material that is used in reactor. Packing materials for
biomethanation are critical in terms of hydrogenotrophic methanogens immobilization on the
surface of packing material. It acts as support for biofilm growth. Therefore, characteristics of
filter material are important parameters that influence the growth of microorganisms and methane
production. Factors, such as optimal specific surface area and porosity are important to sustain
growth and activity of microorganisms. Optimal particle size and capability to mechanically resist
compaction ensures avoiding high pressure drop. Optimal particle size also ensures uniform gas
flow as gases distribute through the packing material. This review paper summarizes and compare
the characteristics of different packing materials important for biomethanation through ex-situ
biotrickling filter reactor systems.
Kirjeldus
Received: February 1st, 2021 ; Accepted: May 2nd, 2021 ; Published: May 18th, 2021 ; Correspondence: Zane.Kusnere@rtu.lv
Märksõnad
biogas upgrading, biomethanation, biotrickling filter, biofilm, packing materials, articles