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
Links
Landscapes
- 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.
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) |
Family Cites Families (3)
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 |
KR100560637B1 (en) * | 1997-05-29 | 2006-03-16 | 돌로매트릭스 인터내셔날 리미티드 | Encapsulation of hazardous waste material |
-
2001
- 2001-03-13 ES ES200100581A patent/ES2191530B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2191530A1 (en) | 2003-09-01 |
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