Effect of adding aluminium salts to wet FGD systems upon the stabilization of mercury
[EN] This paper evaluates the effect of using aluminum salts in wet Flue Gas Desulphurization Plants (FGD) upon mercury reemission. Aluminum sulfate is employed to increase the SO2 retention capacity of low porosity limestone. However, its presence in the FGD system also influences the chemical reac...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/77025 |
| Acceso en línea: | http://hdl.handle.net/10261/77025 |
| Access Level: | acceso abierto |
| Palabra clave: | Mercury FGD Flue Gas Desulphurization Additive |
| Sumario: | [EN] This paper evaluates the effect of using aluminum salts in wet Flue Gas Desulphurization Plants (FGD) upon mercury reemission. Aluminum sulfate is employed to increase the SO2 retention capacity of low porosity limestone. However, its presence in the FGD system also influences the chemical reactions of the species in the scrubber. This study, performed at lab-scale to assess the reduction of mercury from aqueous solutions and gypsum slurries, has demonstrated that the addition of aluminum sulfate mainly affects the pH of the solution and the formation of sulfite ions, which in turn affects the mechanisms of mercury re-emission. |
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