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Author Diaz, C.; Belmonte, M.; Campos, J.L.; Franchi, O.; Faundez, M.; Vidal, G.; Argiz, L.; Pedrouso, A.; del Rio, A.V.; Mosquera-Corral, A. doi  openurl
  Title Limits of the anammox process in granular systems to remove nitrogen at low temperature and nitrogen concentration Type Journal Article
  Year 2020 Publication Process Safety And Environmental Protection Abbreviated Journal Process Saf. Environ. Protect.  
  Volume 138 Issue Pages 349-355  
  Keywords Anammox; Dissolved oxygen; Granular biomass; Nitrogen; SRT; Temperature  
  Abstract When partial nitritation-anammox (PN-AMX) processes are applied to treat the mainstream in wastewater treatment plants (WWTPs), it is difficult to fulfil the total nitrogen (TN) quality requirements established by the European Union (<10g TN/m(3)). The operation of the anammox process was evaluated here in a continuous stirred tank reactor operated at 15 degrees C and fed with concentrations of 50 g TN/m(3) (1.30 +/- 0.23 g NO2- -N/g NH4+-N). Two different aspects were identified as crucial, limiting nitrogen removal efficiency. On the one hand, the oxygen transferred from the air in contact with the mixed liquor surface favoured the nitrite oxidation to nitrate (up to 75 %) and this nitrate, in addition to the amount produced from the anammox reaction itself, worsened the effluent quality. On the other hand, the mass transfer of ammonium and nitrite to be converted inside the anammox granules involves relatively large values of apparent affinity constants (k(NH4+app) : 0.50 g NH4+-N/m(3) ; k(NO2-app) 0.17 g NO2--N/m(3)) that favour the presence of these nitrogen compounds in the produced effluent. The careful isolation of the reactor from air seeping and the fixation of right hydraulic and solids retention times are expected to help the maintenance of stability and effluent quality. (C) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.  
  Address [Diaz, Claudia; Belmonte, Marisol] Univ Playa Ancha, Fac Ingn, Lab Biotecnol Medio Ambiente & Ingn LABMAI, Avda Leopoldo Carvallo 270, Valparaiso 2340000, Chile, Email: jluis.campos@uai.cl  
  Corporate Author Thesis  
  Publisher Elsevier Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0957-5820 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000538807400005 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 1193  
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Author Mahajan, S.M.; Asenjo, F.A. pdf  doi
openurl 
  Title Hot Fluids and Nonlinear Quantum Mechanics Type Journal Article
  Year 2015 Publication International Journal Of Theoretical Physics Abbreviated Journal Int. J. Theor. Phys.  
  Volume 54 Issue 5 Pages 1435-1449  
  Keywords Nonlinear quantum mechanics; Fluids; Temperature; High energy density physics  
  Abstract A hot relativistic fluid is viewed as a collection of quantum objects that represent interacting elementary particles. We present a conceptual framework for deriving nonlinear equations of motion obeyed by these hypothesized objects. A uniform phenomenological prescription, to affect the quantum transition from a corresponding classical system, is invoked to derive the nonlinear Schrodinger, Klein-Gordon, and Pauli-Schrodinger and Feynman-GellMaan equations. It is expected that the emergent hypothetical nonlinear quantum mechanics would advance, in a fundamental way, both the conceptual understanding and computational abilities, particularly, in the field of extremely high energy-density physics.  
  Address [Mahajan, Swadesh M.] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA, Email: mahajan@mail.utexas.edu;  
  Corporate Author Thesis  
  Publisher Springer/Plenum Publishers Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0020-7748 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000352858600004 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 485  
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Author Morales, N.; del Rio, A.V.; Vazquez-Padin, J.R.; Mendez, R.; Mosquera-Corral, A.; Campos, J.L. pdf  doi
openurl 
  Title Integration of the Anammox process to the rejection water and main stream lines of WWTPs Type Journal Article
  Year 2015 Publication Chemosphere Abbreviated Journal Chemosphere  
  Volume 140 Issue Pages 99-105  
  Keywords Anammox; Energetic efficiency; Greenhouse gas emission; Main stream; Temperature  
  Abstract Nowadays the application of Anammox based processes in the wastewater treatment plants has given a step forward. The new goal consists of removing the nitrogen present in the main stream of the WWTTPs to improve their energetic efficiencies. This new approach aims to remove not only the nitrogen but also to provide a better use of the energy contained in the organic matter. The organic matter will be removed either by an anaerobic psychrophilic membrane reactor or an aerobic stage operated at low solids retention time followed by an anaerobic digestion of the generated sludge. Then ammonia coming from these units will be removed in an Anammox based process in a single unit system. The second strategy provides the best results in terms of operational costs and would allow reductions of about 28%. Recent research works performed on Anammox based processes and operated at relatively low temperatures and/or low ammonia concentrations were carried out in single-stage systems using biofilms, granules or a mixture of flocculent nitrifying and granular Anammox biomasses. These systems allowed the appropriated retention of Anammox and ammonia oxidizing bacteria but also the proliferation of nitrite oxidizing bacteria which seems to be the main drawback to achieve the required effluent quality for disposal. Therefore, prior to the implementation of the Anammox based processes at full scale to the water line, a reliable strategy to avoid nitrite oxidation should be defined in order to maintain the process stability and to obtain the desired effluent quality. If not, the application of a post-denitrification step should be necessary. (C) 2015 Elsevier Ltd. All rights reserved.  
  Address [Morales, Nicolas; Val del Rio, Angeles; Mendez, Ramon; Mosquera-Corral, Anuska; Luis Campos, Jose] Univ Santiago de Compostela, Sch Engn, Dept Chem Engn, E-15782 Santiago De Compostela, Spain, Email: nicolas.morales.pereira@fcc.es;  
  Corporate Author Thesis  
  Publisher Pergamon-Elsevier Science Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0045-6535 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000357232000014 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 507  
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Author Ramajo, L.; Rodriguez-Navarro, A.B.; Duarte, C.M.; Lardies, M.A.; Lagos, N.A. pdf  doi
openurl 
  Title Shifts in shell mineralogy and metabolism of Concholepas concholepas juveniles along the Chilean coast Type Journal Article
  Year 2015 Publication Marine And Freshwater Research Abbreviated Journal Mar. Freshw. Res.  
  Volume 66 Issue 12 Pages 1147-1157  
  Keywords calcium carbonate; metabolism; ocean acidification; temperature  
  Abstract Along the west coast of South America, from the tropical zone to the Patagonian waters, there is a significant latitudinal gradient in seawater temperature, salinity and carbonate chemistry. These physical-chemical changes in seawater induce morphological and physiological responses in calcifying organisms, which may alter their energy budget and calcification processes. In this study, we study the organism energy maintenance (i.e. metabolic rate) and mineralogical composition of the shell of the juvenile marine snails Concholepas concholepas (Gastropoda: Muricidae), collected from benthic populations located similar to 2000km apart, varies across geographic regions along the Chilean coast. We found that in juvenile snails, the calcite:aragonite ratio in the pallial shell margin (i.e. newly deposited shell) increase significantly from northern to southern populations and this increase in calcite precipitation in the shell of juveniles snails was associated with a decrease in oxygen consumption rates in these populations. Our result suggests that calcite secretion may be favoured when metabolic rates are lowered, as this carbonate mineral phase might be less energetically costly for the organism to precipitate. This result is discussed in relation to the natural process such as coastal upwelling and freshwater inputs that promote geographic variation in levels of pH and carbonate saturation state in seawater along the Chilean coast.  
  Address [Ramajo, Laura; Duarte, Carlos M.] CSIC UIB, Inst Mediterraneo Estudios Avanzados IMEDEA, Global Change Dept, E-07190 Esporles, Islas Baleares, Spain, Email: lramajo@imedea.uib-csic.es  
  Corporate Author Thesis  
  Publisher Csiro Publishing Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1323-1650 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000366105500008 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 561  
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Author Thomsen, M.C.; Fuentes, A.; Demarco, R.; Volkwein, C.; Consalvi, J.L.; Reszka, P. pdf  doi
openurl 
  Title Soot measurements in candle flames Type Journal Article
  Year 2017 Publication Experimental Thermal And Fluid Science Abbreviated Journal Exp. Therm. Fluid Sci.  
  Volume 82 Issue Pages 116-123  
  Keywords MAE; Modulated Absorption/Emission; Soot volume fraction; Soot temperature; Wick effects  
  Abstract Soot volume fractions and soot temperatures have been measured for the first time on candle flames. Measurements on laminar steady flames were carried out using candles with wick diameters of 2, 3 and 4 mm. Wick length was varied between 4 and 10 mm. The shape of the candle flame was obtained from CH* spontaneous emissions. Measured flame heights show an increase with wick dimensions, approaching an asymptotic value for increasing wick lengths. Soot volume fractions were obtained from laser extinction measurements with the Modulated Absorption/Emission (MAE) technique. A deconvolution technique and a regularization procedure were applied to the data. Radial profiles of soot volume fractions increase when varying the wick dimensions; this effect is produced by the greater amount of fuel released by the wick. Radially integrated soot volume fractions were also calculated, presenting a similar behavior to the soot volume fraction radial profiles. The peak integrated soot volume fraction was found at approximately half the flame height, independent of the wick dimensions and burning rates. Soot temperature was obtained from emission measurements at two different wavelengths considering the attenuation of the soot particles in the optical path length. A deconvolution and regularization procedure was carried out in order to obtain temperature profiles for different heights in the flame. The observed increase in soot production and soot temperature profiles was directly related to the higher burning rate experienced by the candle. The results show that peak integrated soot volume fractions are proportional to both the mass loss rates and the flame heights. (C) 2016 Elsevier Inc. All rights reserved.  
  Address [Thomsen, M. C.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA, Email: pedro.reszka@uai.cl  
  Corporate Author Thesis  
  Publisher Elsevier Science Inc Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0894-1777 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000392769400012 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 696  
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