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Canovas-Diaz M, Howell JA. Stratified ecology techniques in the startup of an anaerobic downflow fixed film percolating reactor. Biotechnol Bioeng. 1987;30(2):289-96doi: 10.1002/bit.260300220.
Canovas-Diaz, M., & Howell, J. A. (1987). Stratified ecology techniques in the startup of an anaerobic downflow fixed film percolating reactor. Biotechnology and bioengineering, 30(2), 289-96. https://doi.org/10.1002/bit.260300220
Canovas-Diaz, M, and Howell, J A. "Stratified ecology techniques in the startup of an anaerobic downflow fixed film percolating reactor." Biotechnology and bioengineering vol. 30,2 (1987): 289-96. doi: https://doi.org/10.1002/bit.260300220
Canovas-Diaz M, Howell JA. Stratified ecology techniques in the startup of an anaerobic downflow fixed film percolating reactor. Biotechnol Bioeng. 1987 Aug 05;30(2):289-96. doi: 10.1002/bit.260300220. PMID: 18581311.
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Biotechnol Bioeng. 1987 Aug 05;30(2):289-96. doi: 10.1002/bit.260300220.

Stratified ecology techniques in the startup of an anaerobic downflow fixed film percolating reactor.

Biotechnology and bioengineering

M Canovas-Diaz, J A Howell

Affiliations

  1. Department of Chemical Engineering, University College of Swansea, Swansea, SA2 8PP, United Kingdom.

PMID: 18581311 DOI: 10.1002/bit.260300220

Abstract

A two-column pilot scale downflow percolating fixed film (DPFF) anaerobic reactor treating deproteinized cheese whey (DPW) was used in this study. The system was operated at one-third of the maximum working volume in an attempt to avoid mass transfer limitations of the gas products (since two-thirds of the immobilized microbial culture was unsubmerged), as well as to minimize the effects of localized high volatile fatty acids (VFA) levels and low pH on its methanogenic activity. A new method to shorten the start-up period was used by growing methanogenic and acetogenic (H(2)-producers) bacteria on a synthetic medium until reaching a stable methane production rate and then switching the reactor over to DPW and allowing acidogenic growth. The start-up period was reduced to 35 days as a result of this operational mode. The reactor was able to handle 8 kg COD/ m(3).d after 35 days of operation.

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