PMID: 11329686May 2, 2001Paper

Hydrogen production in anaerobic reactors during shock loads--influence of formate production and H2 kinetics

Water Research
R K Voolapalli, D C Stuckey

Abstract

In this article the role of hydrogen as a process monitoring tool in methanogenic systems was studied by considering the influence of several key system parameters. Hydrogen production was found to be influenced mainly by the inocula's source pH, and varied only slightly with external pH and HCO3- levels. When an inoculum adapted to above neutral conditions (pH > 7) was shocked, reducing equivalents were selectively channelled through formate, while high hydrogen production was noticed with acidically (pH < 6.5) adapted inocula. The results also revealed that the production of hydrogen or formate during shock loads was not strongly associated with microbial morphology (granules or flocs) as high electron fluxes were possible through either during acidogenesis. Shock load experiments in continuous reactors revealed that neither hydrogen nor formate accumulated to any significant degree, nevertheless digester recovery took a long time due to the slow kinetics of volatile fatty acid degradation. Selective formate production under neutral pH environments, coupled with high hydrogenotrophic activity, was found to be responsible for the dampened hydrogen response during the early phases of gradually shocked systems (step change). Bas...Continue Reading

References

Jan 1, 1995·Antonie van Leeuwenhoek·S Nachaiyasit, D C Stuckey
Apr 1, 1986·Biotechnology and Bioengineering·S R Harper, F G Pohland
Jan 5, 1995·Biotechnology and Bioengineering·G E Strong, R Cord-Ruwisch

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Citations

Mar 25, 2014·Bioresource Technology·Mario Andrés HernándezYves Andres
Mar 5, 2016·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Juan Manuel Méndez-ContrerasAngel I Ortiz-Ceballos
Jul 2, 2014·Biotechnology and Bioengineering·Robert D HoelzleDamien J Batstone
May 17, 2012·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Philipp LinsPaul Illmer
Jul 28, 2007·Biotechnology and Bioengineering·Margarida F TemudoMark van Loosdrecht
Jan 14, 2021·Biotechnology and Bioengineering·Robert D HoelzleDamien Batstone

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