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dc.contributor.author박성숙-
dc.date.accessioned2019-11-30T07:31:59Z-
dc.date.available2019-11-30T07:31:59Z-
dc.date.issued2017-09-
dc.identifier.citationMINE WATER AND THE ENVIRONMENT, v. 36, no. 3, page. 436-442en_US
dc.identifier.issn1025-9112-
dc.identifier.issn1616-1068-
dc.identifier.urihttps://link.springer.com/article/10.1007%2Fs10230-017-0437-5-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/115451-
dc.description.abstractThe effectiveness of silicate- and phosphate-based surface coating agents (Na2SiO3, CaSiO3, and KH2PO4) in inhibiting the oxidation of sulfide minerals in acidic and low temperature conditions was studied. Rock samples were coated using two oxidation methods: H2O2 was mixed with the coating agents in one, whereas in the second, H2O2 was applied to the rock surface prior to the coating agent. The second approach was ineffective, but with Method 1, the pH (5) was above the pH (3.6) of the uncoated control sample. Oxidation, calculated after 14 weeks, had been suppressed by up to 96 and 65%, as indicated by the release of Fe2+ and SO4 (2-), respectively. All three coating agents (at concentrations of 0.1 and 0.3 M) suppressed the release of Fe2+ (< 3 mg L- 1). Na2SiO3 inhibited Fe2+ and SO4 (2-) release by 94 and 65%, respectively. Surface protection (or oxidation inhibition) efficiencies of KH2PO4 (in terms of Fe2+ release) were 67, 94, and 96% with 0.05, 0.1, and 0.3 M, respectively. The Na2SiO3 and CaSiO3 coatings, irrespective of their concentrations, reduced iron oxidation by 94 and 84%, respectively. Fourier transform infrared spectroscopy analysis of the Na2SiO3 treated samples showed the presence of iron silicate coatings. Based on this work, coating of rock samples with silicate or phosphate can reduce the oxidation rate of sulfide minerals in acidic and low temperature conditions.en_US
dc.description.sponsorshipThis work was supported by the Mine Reclamation Corporation (MIRECO) and a research Grant (15-09-03-02-06) from the 2015 Research Development Program funded by Ansan Green Environment Center.en_US
dc.language.isoen_USen_US
dc.publisherSPRINGER HEIDELBERGen_US
dc.subjectAcid rock drainageen_US
dc.subjectMetal sulfidesen_US
dc.subjectOxidationen_US
dc.subjectSurface coating agenten_US
dc.subjectSilicateen_US
dc.subjectPhosphateen_US
dc.titleStability of Coatings on Sulfide Minerals in Acidic and Low-Temperature Environmentsen_US
dc.typeArticleen_US
dc.relation.no3-
dc.relation.volume36-
dc.identifier.doi10.1007/s10230-017-0437-5-
dc.relation.page436-442-
dc.relation.journalMINE WATER AND THE ENVIRONMENT-
dc.contributor.googleauthorKang, Chan-Ung-
dc.contributor.googleauthorJeon, Byong-Hun-
dc.contributor.googleauthorKumar, Rahul-
dc.contributor.googleauthorPark, Seong-Sook-
dc.contributor.googleauthorPark, Hyun-Sung-
dc.contributor.googleauthorKim, Sun-Joon-
dc.relation.code2017010390-
dc.sector.campusS-
dc.sector.daehakRESEARCH INSTITUTE[S]-
dc.sector.departmentPETROLEUM AND MINERAL RESEARCH INSTITUTE-
dc.identifier.pidpss2907-
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