Temperature-based control of an anaerobic reactor using a multi-model observer-based estimator

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DOIResolve DOI: http://doi.org/10.1021/es0618043
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TypeArticle
Journal titleEnvironmental Science and Technology
Volume41
Issue3
Pages978983; # of pages: 6
AbstractThis study presents a temperature-based control strategy for the stabilization of an anaerobic reactor during organic overloads. To prove feasibility of the proposed approach the rate of methane production was followed in batch activity tests and reactor runs during mesophilic蜢thermophilic transitions. Within the first 0.25蜢6 h of temperature augmentation, an increase in the rate of methane production was observed with higher rates measured under thermophilic (above 40 °C) conditions. However, 24 h after startup both in batch tests and reactor runs, the rate of methane production under thermophilic conditions was inferior to that under optimal mesophilic conditions (35 °C). Following these results, a control strategy based on short-term augmentation of the reactor temperature was proposed and tested in a 10 L UASB reactor. The control strategy employed a multi-model observer-based estimator to stabilize the effluent COD concentration during organic overloads. The temperature-based control resulted in an increased methanization rate and improved reactor stability overall.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Biotechnology Research Institute
Peer reviewedNo
NPARC number12338696
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Record identifierd7ab9738-580d-4d2d-bdf0-72f713908dff
Record created2009-09-10
Record modified2016-05-09
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