Fluorescence-based monitoring of tracer and substrate distribution in an UASB reactor

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DOIResolve DOI: http://doi.org/10.1016/j.chemosphere.2006.03.045
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TypeArticle
Journal titleChemosphere
Volume65
Issue7
Pages12121220; # of pages: 9
Subjectenv; Fluorescence; Oxygen; methods
AbstractIn this work, rhodamine-related fluorescence was measured on-line at four reactor heights in order to study hydrodynamics within an upflow anaerobic sludge bed reactor. A linear dependence of the dispersion coefficient (D) on the upflow velocity was observed, while the influence of the organic loading rate (OLR) was insignificant. Furthermore, the Bodenstein number of the reactor loaded with granulated sludge was found to be position-dependent with the largest values measured at the bottom of the sludge bed. This trend was not observed in the reactor without sludge. Chemical oxygen demand (COD) and volatile fatty acid (VFA) concentrations were measured at the same reactor heights as in rhodamine tests using conventional off-line analytical methods and on-line multiwavelength fluorometry. Significant spatial COD and VFA gradients were observed at organic loading rates above Click to view the MathML source and linear upflow velocities below 0.8 m h-1.
Publication date
AffiliationNRC Biotechnology Research Institute; National Research Council Canada
Peer reviewedNo
NRC number47268
NPARC number3539624
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Record identifier42e56187-2214-4419-a726-fa4fdfc7deca
Record created2009-03-01
Record modified2016-05-09
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