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Estimation of the Intrinsic Maximum Substrate Utilization Rate Using Batch Reactors with Denitrifying Biofilm: A Proposed Methodology
Author(s) -
Rabah Fahid K. J.,
Dahab Mohamed F.,
Zhang Tian C.
Publication year - 2007
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143007x175924
Subject(s) - volatile suspended solids , batch reactor , substrate (aquarium) , biomass (ecology) , bioreactor , denitrifying bacteria , denitrification , chemistry , limiting , growth rate , batch processing , kinetic energy , analytical chemistry (journal) , chromatography , suspended solids , nuclear chemistry , environmental engineering , environmental science , mathematics , nitrogen , physics , wastewater , catalysis , biology , organic chemistry , ecology , computer science , engineering , geometry , quantum mechanics , programming language , mechanical engineering
A method for estimation of the maximum substrate utilization rate ( q max ) using batch reactors with denitrification biofilm was introduced and compared with the traditional method of using batch reactors with suspended growth for q max estimation. The values of q max obtained from the suspended‐growth reactors (0.69 to 0.71 g N/g volatile suspended solids [VSS] · d) and from the attached‐biomass reactors (0.74 to 0.85 g N/g VSS · d) are similar and within the range of the values reported in the literature (0.23 to 2.88 g N/g VSS · d). Therefore, the intrinsic kinetic parameter, q max , can be obtained using attached‐growth batch reactors, if the effectiveness factor, η, is approximately equal to 1 and the bulk concentration of the rate‐limiting substrate, C , is much higher than the half‐velocity constant, K s . The attached‐growth batch reactor method is unique, because the biomass used in the batch tests is the same as that present in the parent reactor under investigation.