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Author (up) del Rio, A.V.; Campos, J.L.; Da Silva, C.; Pedrouso, A.; Mosquera-Corral, A. pdf  doi
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  Title Determination of the intrinsic kinetic parameters of ammonia-oxidizing and nitrite-oxidizing bacteria in granular and flocculent sludge Type Journal Article
  Year 2019 Publication Separation And Purification Technology Abbreviated Journal Sep. Purif. Technol.  
  Volume 213 Issue Pages 571-577  
  Keywords Ammonia oxidizing bacteria; Flocs; Granules; Kinetics; Monod; Nitrite oxidizing bacteria  
  Abstract The different oxygen affinities of ammonia-oxidizing (AOB) and nitrite-oxidizing bacteria (NOB) are often used to define the operational strategy to achieve partial nitritation (PN) required before the anammox (AMX) process. For this purpose, apparent kinetic parameters are mainly used in the case of granular sludge, which can lead to errors when defining the operational conditions to obtain only nitritation (avoiding nitratation). In the present study, a mathematical methodology is proposed to determine the intrinsic kinetic parameters of AOB and NOB in granular sludge based on data obtained by respirometric assays. Additionally, the oxygen affinity constant (K-O2) and maximum specific rate (r(max)) of flocculent and granular sludge sample, produced under mainstream and sidestream conditions were determined at various temperatures (15, 20 and 30 degrees C). The results show that for granules, the intrinsic K-O2 and r(max) values were lower and higher, respectively, than the apparent values. Furthermore, the K-O2 values for flocs and granules at all of the tested temperatures were lower for NOB than for AOB. The values obtained for the kinetic parameters indicated that it is impossible to maintain partial nitritation by only controlling the dissolved oxygen concentration.  
  Address [del Rio, Angeles Val; Pedrouso, Alba; Mosquera-Corral, Anuska] Univ Santiago de Compostela, Dept Chem Engn, Sch Engn, E-15705 Santiago De Compostela, Spain, Email: mangeles.val@usc.es;  
  Corporate Author Thesis  
  Publisher Elsevier Science Bv Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1383-5866 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000457657200054 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 977  
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