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dc.contributor.authorTorras Grané, Josep
dc.contributor.authorBuj Corral, Irene
dc.contributor.authorRovira Boixaderas, Miquel
dc.contributor.authorPablo Ribas, Joan de
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Mecànica
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Minera i Recursos Naturals
dc.date.accessioned2011-09-15T12:26:24Z
dc.date.available2011-09-15T12:26:24Z
dc.date.created2011-02-28
dc.date.issued2011-02-28
dc.identifier.citationTorras, J. [et al.]. Semi-dynamic leaching tests of nickel containing wastes stabilized/solidified with magnesium potassium phosphate cements. "Journal of hazardous materials", 28 Febrer 2011, vol. 186, núm. 2-3, p. 1954-1960.
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/2117/13209
dc.description.abstractHerein is presented a study on the long-term leaching behaviour of nickel containing wastes stabilized/solidified with magnesium potassium phosphate cements. Two different semi-dynamic leaching tests were carried out on monolithic materials: ANS16.1 test with liquid-to-solid ratio (L/S) of 10dm3 kg−1 and increasing renewal times, and ASTM C1308 test with liquid-to-solid ratio (L/S) of 100dm3 kg−1 and constant renewal time of 1 day. ASTM C1308 provides a lower degree of saturation of the leachant with respect to the leached material. The effectiveness of magnesium potassium phosphate cements for the inertization of nickel was proved. XRD analyses showed the presence of bobierrite on the monolith’s surface after the leaching test, which had not been detected prior to the leaching test. In addition, the calculated cumulative release of the main components of the stabilization matrix (Mg2+, total P and K+)was represented versus time in logarithmic scale and it was determined if the leaching mechanism corresponds to diffusion. Potassium is released by diffusion, while total phosphorous and magnesium show dissolution. Magnesium release in ANS 16.1 is slowed down because of saturation of the leachant. Experimental results demonstrate the importance of L/S ratio and renewal times in semi-dynamic leaching tests.
dc.format.extent7 p.
dc.language.isoeng
dc.publisherElsevier
dc.subjectÀrees temàtiques de la UPC::Edificació::Materials de construcció::Ciment
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Degradació de materials
dc.subject.lcshMagnesium potassium phosphate cement
dc.subject.lcshNickel
dc.subject.lcshSemi-dynamic leaching test
dc.titleSemi-dynamic leaching tests of nickel containing wastes stabilized/solidified with magnesium potassium phosphate cements
dc.typeArticle
dc.subject.lemacNiquel -- lixiviacio
dc.subject.lemacCiment -- Deterioració
dc.contributor.groupUniversitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials
dc.contributor.groupUniversitat Politècnica de Catalunya. TECNOFAB - Grup de Recerca en Tecnologies de Fabricació
dc.contributor.groupUniversitat Politècnica de Catalunya. ERNMA - Enginyeria dels Recursos Naturals i Medi Ambient
dc.identifier.doi10.1016/j.jhazmat.2010.12.093
dc.relation.publisherversionhttp://linkinghub.elsevier.com/retrieve/pii/S0304389410016730
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac5373288
dc.description.versionPostprint (published version)
local.citation.authorTorras, J.; Buj, I.; Rovira, M.; De Pablo, J.
local.citation.publicationNameJournal of hazardous materials
local.citation.volume186
local.citation.number2-3
local.citation.startingPage1954
local.citation.endingPage1960


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