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dc.contributor.author전병훈-
dc.date.accessioned2018-08-09T02:20:33Z-
dc.date.available2018-08-09T02:20:33Z-
dc.date.issued2016-07-
dc.identifier.citationJOURNAL OF COLLOID AND INTERFACE SCIENCE, v. 474, Page. 93-102en_US
dc.identifier.issn0021-9797-
dc.identifier.issn1095-7103-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0021979716302272?via%3Dihub-
dc.identifier.urihttp://repository.hanyang.ac.kr/handle/20.500.11754/74388-
dc.description.abstractA computational model was developed and applied to investigate struvite precipitation under different pH levels and ionic concentrations. Ionic species, including ammonium (NH4-), hydrogen phosphate (HPO42-), magnesium (Mg2+), calcium (Ca2+), and struvite, were incorporated into the proposed model. The unknown kinetic coefficients of struvite were identified from the experimental data. In this study, the kinetics of struvite precipitation, which combined the ionic reactions (NH4+/NH3 and HPO42-/H2PO4) on the basis of pseudo-equilibrium conditions was parameterized. The experiments for model verification were conducted at a constant initial Mg/P ratio with changing ionic concentrations at pH levels of 8.7 and 9.7. The batch experiments showed high struvite precipitation (˃90% for 300 mg-N L-1 and 100 mg-P L-1). The presence of Ca2+ (Ca2+/Mg2+ ˃0.5) in the reactors interfered with the formation and growth of struvite. The decrease in the pH level with the struvite precipitation verified the simulation data. The model also confirmed the optimal ionic conditions in order to maximize the struvite precipitation (300 mg-P L-1, and N/P molar ratio ˃7). The model responding to the ionic conditions provided good prediction of the decrease in the pH levels and the positive role of the nitrogen levels for struvite precipitation. High nitrogen concentrations provided high P removal due to pH buffering and crystal purity. (C) 2016 Elsevier Inc. All rights reserved.en_US
dc.description.sponsorshipThis study was supported by the Nuclear R&D, and Mid-career Researchers Program of the Ministry of Education, Science, and Technology through the National Research Foundation of Korea (NRF, 2013069183).en_US
dc.language.isoenen_US
dc.publisherACADEMIC PRESS INC ELSEVIER SCIENCEen_US
dc.subjectStruviteen_US
dc.subjectSynthetic wastewateren_US
dc.subjectComputational modelen_US
dc.subjectPhosphorus recoveryen_US
dc.titleStruvite precipitation under changing ionic conditions in synthetic wastewater: Experiment and modelingen_US
dc.typeArticleen_US
dc.relation.volume474-
dc.identifier.doi10.1016/j.jcis.2016.04.013-
dc.relation.page93-102-
dc.relation.journalJOURNAL OF COLLOID AND INTERFACE SCIENCE-
dc.contributor.googleauthorLee, Sang-hun-
dc.contributor.googleauthorKumar, Rahul-
dc.contributor.googleauthorJeon, Byong-Hun-
dc.relation.code2016000675-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING-
dc.identifier.pidbhjeon-
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COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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