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ES2191530B1 - METHOD FOR THE STABILIZATION OF HEAVY METALS CONTAINED IN SOLID WASTE AND SOILS, THROUGH THE APPLICATION OF MAGNESIUM OXIDE OF LOW LAW. - Google Patents

METHOD FOR THE STABILIZATION OF HEAVY METALS CONTAINED IN SOLID WASTE AND SOILS, THROUGH THE APPLICATION OF MAGNESIUM OXIDE OF LOW LAW.

Info

Publication number
ES2191530B1
ES2191530B1 ES200100581A ES200100581A ES2191530B1 ES 2191530 B1 ES2191530 B1 ES 2191530B1 ES 200100581 A ES200100581 A ES 200100581A ES 200100581 A ES200100581 A ES 200100581A ES 2191530 B1 ES2191530 B1 ES 2191530B1
Authority
ES
Spain
Prior art keywords
magnesium oxide
heavy metals
residue
solid waste
stabilization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
ES200100581A
Other languages
Spanish (es)
Other versions
ES2191530A1 (en
Inventor
Fernando Espiell Alvarez
Josep Maria Chimenos Ribera
Ana Ines Fernandez Renna
Merce Segarra Rubi
Miguel Angel Fernandez Lopez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magnesitas Navarras SA
Original Assignee
Magnesitas Navarras SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magnesitas Navarras SA filed Critical Magnesitas Navarras SA
Priority to ES200100581A priority Critical patent/ES2191530B1/en
Publication of ES2191530A1 publication Critical patent/ES2191530A1/en
Application granted granted Critical
Publication of ES2191530B1 publication Critical patent/ES2191530B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Processing Of Solid Wastes (AREA)

Abstract

Método para la estabilización de metales pesados en residuos sólidos y suelos contaminados mediante la aplicación de óxido de magnesio de baja ley. Se utiliza como agente estabilizante un óxido de magnesia natural, para la estabilización de residuos sólidos y suelos contaminados con pH inferior a 8 y un contenido elevado de metales pesados. La utilización de óxido de magnesio sitúa el pH de la mezcla en valores para los cuales la solubilidad de los metales pesados es mínima. La cantidad de óxido de magnesio necesaria depende de la naturaleza de cada residuo; ésta se optimiza mediante la realización del test de lixiviación sobre varias proporciones de residuo/estabilizante. Sin embargo, y a diferencia de otros estabilizantes comúnmente utilizados, la adición de un exceso de óxido de magnesio mantiene el pH del residuo estabilizado en los valores óptimos de solubilidad de los metales pesados. La adición de las cantidades necesarias de agua al residuo estabilizado permite el fraguado del mismocon el tiempo, adquiriendo éste una consistencia que facilita la posterior manipulación.Method for stabilizing heavy metals in solid waste and contaminated soils by applying low grade magnesium oxide. A natural magnesia oxide is used as a stabilizing agent, for the stabilization of solid waste and contaminated soils with a pH lower than 8 and a high heavy metal content. The use of magnesium oxide places the pH of the mixture at values for which the solubility of heavy metals is minimal. The amount of magnesium oxide needed depends on the nature of each residue; This is optimized by performing the leaching test on various residue / stabilizer ratios. However, and unlike other commonly used stabilizers, the addition of an excess of magnesium oxide keeps the pH of the residue stabilized at the optimal solubility values of heavy metals. The addition of the necessary amounts of water to the stabilized residue allows its setting over time, which acquires a consistency that facilitates subsequent handling.

ES200100581A 2001-03-13 2001-03-13 METHOD FOR THE STABILIZATION OF HEAVY METALS CONTAINED IN SOLID WASTE AND SOILS, THROUGH THE APPLICATION OF MAGNESIUM OXIDE OF LOW LAW. Expired - Fee Related ES2191530B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200100581A ES2191530B1 (en) 2001-03-13 2001-03-13 METHOD FOR THE STABILIZATION OF HEAVY METALS CONTAINED IN SOLID WASTE AND SOILS, THROUGH THE APPLICATION OF MAGNESIUM OXIDE OF LOW LAW.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200100581A ES2191530B1 (en) 2001-03-13 2001-03-13 METHOD FOR THE STABILIZATION OF HEAVY METALS CONTAINED IN SOLID WASTE AND SOILS, THROUGH THE APPLICATION OF MAGNESIUM OXIDE OF LOW LAW.

Publications (2)

Publication Number Publication Date
ES2191530A1 ES2191530A1 (en) 2003-09-01
ES2191530B1 true ES2191530B1 (en) 2005-02-01

Family

ID=27838301

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200100581A Expired - Fee Related ES2191530B1 (en) 2001-03-13 2001-03-13 METHOD FOR THE STABILIZATION OF HEAVY METALS CONTAINED IN SOLID WASTE AND SOILS, THROUGH THE APPLICATION OF MAGNESIUM OXIDE OF LOW LAW.

Country Status (1)

Country Link
ES (1) ES2191530B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276255A (en) * 1992-12-30 1994-01-04 Stark J Norman Cementitious encapsulation of waste materials and/or contaminated soils containing heavy metals, to render them immobile
US5788623A (en) * 1995-06-09 1998-08-04 Entact, Inc. Method for treatment of solid waste to minimize permeability of the waste

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6399848B1 (en) * 1997-05-29 2002-06-04 Dolomatrix International Limited Encapsulation of hazardous waste materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276255A (en) * 1992-12-30 1994-01-04 Stark J Norman Cementitious encapsulation of waste materials and/or contaminated soils containing heavy metals, to render them immobile
US5788623A (en) * 1995-06-09 1998-08-04 Entact, Inc. Method for treatment of solid waste to minimize permeability of the waste

Also Published As

Publication number Publication date
ES2191530A1 (en) 2003-09-01

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