Use of carbon dioxide evolution rate for determining heterotrophic yield and characterising denitrifying biomass

Abstract

Research Article| January 01 1999 Use of carbon dioxide evolution rate for determining heterotrophic yield and characterising denitrifying biomass M. Spérandio; M. Spérandio *Laboratoire d'Ingéniérie des Procédés de l'Environnement, Département GPI, Institut National des Sciences Appliquées, av. de Rangueil, 31077 Toulouse Cedex, France Search for other works by this author on: This Site PubMed Google Scholar V. Urbain; V. Urbain **C.I.R.S.E.E., Lyonnaise des Eaux, 38 av. du Prés. Wilson 78230 Le Pecq, France Search for other works by this author on: This Site PubMed Google Scholar J.M. Audic; J.M. Audic **C.I.R.S.E.E., Lyonnaise des Eaux, 38 av. du Prés. Wilson 78230 Le Pecq, France Search for other works by this author on: This Site PubMed Google Scholar E. Paul E. Paul *Laboratoire d'Ingéniérie des Procédés de l'Environnement, Département GPI, Institut National des Sciences Appliquées, av. de Rangueil, 31077 Toulouse Cedex, France Search for other works by this author on: This Site PubMed Google Scholar Water Sci Technol (1999) 39 (1): 139–146. https://doi.org/10.2166/wst.1999.0031 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation M. Spérandio, V. Urbain, J.M. Audic, E. Paul; Use of carbon dioxide evolution rate for determining heterotrophic yield and characterising denitrifying biomass. Water Sci Technol 1 January 1999; 39 (1): 139–146. doi: https://doi.org/10.2166/wst.1999.0031 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The aim of this work was to show the potentiality of carbon dioxide evolution rate measurement (CER) in characterisation of heterotrophic biomass, especially in anoxic conditions, in view of modelling and design denitrifying processes. The carbon dioxide evolution rate (CER) was determined in a respirometer by infrared analysis associated to a modelling technique. During anoxic and aerobic batch experiments CER was qualitatively correlated with other respirometric methods (OUR and NUR) and with organic carbon consumption. Yield coefficients were determined under aerobic (YH) and anoxic (YHD) conditions by means of carbon balances using CER and organic carbon measurements. Compared to the COD balances, accuracy of the yield estimation was improved and results obtained were not significantly different. Measured anoxic yields were systematically lower than aerobic ones, and the observed ratios between them were in the range from 0.66 to 0.85. By comparing aerobic and anoxic CER, two methods were proposed to determine the correction factor for anoxic growth ηg. The first results obtained were consistent with those given by the classical method (NUR/OUR). Activated sludge, carbon dioxide evolution rate, correction factor, denitrification, respirometry, sludge yield This content is only available as a PDF. © IWA Publishing 1999 You do not currently have access to this content.