Kinetics of biogas production in Anaerobic Filters

Publication Type

Journal contribution (peer reviewed)

Authors

Krümpel, J.; Schäufele, F.; Schneider, J.; Jungbluth, T.; Zielonka, S.; Lemmer, A.

Year of publication

2016

Published in

Bioresource Technology

Pubisher

Elsevier Ltd

Band/Volume

200/

ISBN / ISSN / eISSN

09608524

DOI

10.1016/j.biortech.2015.10.030

Page (from - to)

230-234

Keywords

Kinetik

This study investigates methane production kinetics from individual volatile fatty acids (VFA) in an Upflow Anaerobic Filter (AF). 1g_COD in the form of acetic (HAc), propionic (HPr) or butyric acid (HBu) was injected into the AF while operating at an organic loading rate (OLR_COD) of 3.5gL^-1d^-1. A new method is introduced to separate gas production of the baseload from the product formation of VFA degradation after the injection. The lag phase, fractional rate of gas production and half-life has been determined for the methane production of the three VFAs. The half-lives were in the order HAc<HBu<HPr showing a slower gas production from the C₃ acid than from the C₄ acid. The results can be used for prediction models for on-demand biogas production, a vital approach that provides the transforming energy market with balancing power. © 2015 Elsevier Ltd.