Leaching behaviour of magnesium phosphate cements containing high quantities of heavy metals
View/Open
leaching.pdf (414,1Kb) (Restricted access)
Request copy
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Cita com:
hdl:2117/10685
Document typeArticle
Defense date2009-10-30
PublisherElsevier
Rights accessRestricted access - publisher's policy
Abstract
Stabilization/solidification (S/S) is one of the most employed techniques for treating liquid wastes containing heavy metals. Magnesium potassium phosphate cements have been used in recent years as stabilizing agents with positive results. However, little information is available about the retention of the metals by magnesium potassium phosphate cements matrices with the exception of the results of compliance tests. In this work, several pastes were prepared by reaction between low grade MgO and KH2PO4 in the presence of different heavy metal nitrate solutions (containing Cd(II), Cr(III), Cu(II), Ni(II), Pb(II) or Zn(II)). In all cases, the initial metal content of the dissolution was 25 g dm−3 and the oxide–phosphate ratio of the pastes was (50:50) in weight. Four different leaching tests were conducted on magnesium potassium phosphate cement pastes: simple batch test (EN 12457-2), equilibrium leaching test, availability test (NEN 7371) and acid neutralization capacity test (ANC). The metal leachate concentration was determined by means of ICP-MS. The stabilization of metals was successful in all cases, although the immobilizing system shows a better behaviour for Pb(II) and Cr(III) under acidic or neutral conditions.
CitationBuj, I. [et al.]. Leaching behaviour of magnesium phosphate cements containing high quantities of heavy metals. "Journal of hazardous materials", 30 Octubre 2009, vol. 175, núm. 1-3, p. 789-794.
ISSN0304-3894
Collections
- Departament d'Enginyeria mecànica - Articles de revista [473]
- SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials - Articles de revista [186]
- ERNMA - Enginyeria dels Recursos Naturals i Medi Ambient - Articles de revista [64]
- Departament d'Enginyeria Química - Articles de revista [1.889]
- Departament d'Enginyeria Minera i Recursos Naturals (fins octubre 2015) - Articles de revista [76]
- TECNOFAB - Grup de Recerca en Tecnologies de Fabricació - Articles de revista [165]
Files | Description | Size | Format | View |
---|---|---|---|---|
leaching.pdf![]() | 414,1Kb | Restricted access |
Except where otherwise noted, content on this work
is licensed under a Creative Commons license
:
Attribution-NonCommercial-NoDerivs 3.0 Spain