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Mathematical modeling of urea reaction with sulfuric acid and phosphoric acid to produce ammonium sulfate and ammonium dihydrogen phosphate respectively

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dc.title Mathematical modeling of urea reaction with sulfuric acid and phosphoric acid to produce ammonium sulfate and ammonium dihydrogen phosphate respectively en
dc.contributor.author Beltrán-Prieto, Juan Carlos
dc.contributor.author Kolomazník, Karel
dc.relation.ispartof Energies
dc.identifier.issn 1996-1073 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2021
utb.relation.volume 14
utb.relation.issue 23
dc.type article
dc.language.iso en
dc.publisher MDPI
dc.identifier.doi 10.3390/en14238004
dc.relation.uri https://www.mdpi.com/1996-1073/14/23/8004
dc.subject urea stabilization en
dc.subject mathematical modeling en
dc.subject simulation en
dc.subject enthalpy en
dc.subject reaction rate en
dc.subject adiabatic heat en
dc.description.abstract Urea is the final product of protein metabolism in mammals and can be found in different biological fluids. Use of mammalian urine in agricultural production as organic fertilizer requires safe handling to avoid the formation of ammonia that will decrease the fertilizer value due to the loss of nitrogen. Safe handling is also required to minimize the decomposition of urea into con-densed products such as biuret and cyanuric acid, which will also have a negative impact on the potential sustainable production of crops and sanitation technologies. The study of thermodynamics and reaction kinetics of urea stabilization plays a key role in understanding the conditions under which undesirable compounds and impurities in urea‐based fertilizers and urea‐based selective catalytic reduction systems are formed. For this reason, we studied the reaction of urea in acid media to achieve urea stabilization by modeling the reaction of urea with sulfuric acid and phosphoric acid, and estimating the reaction enthalpy and adiabatic heat difference for control of the heat re-leased from the neutralization step using Ca(OH)2 or MgO for the safety of the process. Numerical and simulation analyses were performed by studying the effect of the surrounding temperature, the ratio of acid reagent to urea concentration, the rate of addition, and the reaction rate to estimate the required time to achieve an optimum value of urea conversion into ammonium dihydrogen phosphate or ammonium sulfate as potential technological opportunities for by‐product valorization. Full conversion of urea was achieved in about 10 h for reaction rates in the order of 1 × 10−5 s−1when the ratio of H2SO4 to CH4N2O was 1.5. When increasing the ratio to 10, the time required for full conversion was considerably reduced to 3 h. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. en
utb.faculty Faculty of Applied Informatics
dc.identifier.uri http://hdl.handle.net/10563/1010733
utb.identifier.obdid 43882971
utb.identifier.scopus 2-s2.0-85120437408
utb.identifier.wok 000735630900001
utb.source j-scopus
dc.date.accessioned 2021-12-22T11:51:36Z
dc.date.available 2021-12-22T11:51:36Z
dc.description.sponsorship Ministerstvo Průmyslu a Obchodu, MPO: CZ.01.1.02/0.0/0.0/18_215/0020606
dc.description.sponsorship ZDV Frystak (Zemedelske druzstvo vlastniku Frystak); Ministry of Industry and Trade of the Czech Republic [CZ.01.1.02/0.0/0.0/18_215/0020606]
dc.rights Attribution 4.0 International
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.rights.access openAccess
utb.contributor.internalauthor Beltrán-Prieto, Juan Carlos
utb.contributor.internalauthor Kolomazník, Karel
utb.fulltext.affiliation Juan Carlos Beltrán-Prieto * and Karel Kolomazník Faculty of Applied Informatics, Tomas Bata University in Zlín, Nad Stráněmi 4511, 760 05 Zlín, Czech Republic; kolomaznik@utb.cz * Correspondence: prieto@utb.cz
utb.fulltext.dates Received: 22 September 2021 Accepted: 23 November 2021 Published: 30 November 2021
utb.fulltext.sponsorship Funding provided by the agricultural cooperative of owners ZDV Frystak (Zemědělské družstvo vlastníků Fryšták) is gratefully acknowledged. Authors appreciate their financial support to perform the research and for allowing us to publish the results. We thank Precheza Company Prerov for the free supply of sulfuric acid for operational experiments. Additional funding was pro‐ vided by the Ministry of Industry and Trade of the Czech Republic. Operational Programme Enterprise and Innovation for Competitiveness (OP EIC). Project number: CZ.01.1.02/0.0/0.0/18_215/0020606.
utb.wos.affiliation [Beltran-Prieto, Juan Carlos; Kolomaznik, Karel] Tomas Bata Univ Zlin, Fac Appl Informat, Stranemi 4511, Zlin 76005, Czech Republic
utb.scopus.affiliation Faculty of Applied Informatics, Tomas Bata University in Zlín, Nad Stráněmi 4511, Zlín, 760 05, Czech Republic
utb.fulltext.projects CZ.01.1.02/0.0/0.0/18_215/0020606
utb.fulltext.faculty Faculty of Applied Informatics
utb.fulltext.ou -
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