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Microwave-assisted acid treatment for the mineral transformation of chrysotile as an alternative for asbestos waste management.
- Source :
- Environmental Geochemistry & Health; Sep2024, Vol. 46 Issue 9, p1-13, 13p
- Publication Year :
- 2024
-
Abstract
- In this work, the effect of microwave-assisted acid treatments on the morphological and crystallochemical characteristics of chrysotile fibers is investigated. A low concentration of nitric acid (0.2 N) is used to remove Mg<superscript>2+</superscript>-species located in the octahedral sheet of its structure, thereby causing a crystallo-chemical change forming a skeleton of non-crystalline amorphous silica. This skeleton maintains an elongated morphology but characterized by rounded -not sharp-edges and porous surfaces whose physical resistance under stress is reduced when compared with the initial fibers of chrysotile, favoring a lower pathogenicity of the fibers. Thus, microwave-assisted acid treatment rise as a low-cost, fast and effective option in avoiding the dangerousness associated with asbestos waste management. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02694042
- Volume :
- 46
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Environmental Geochemistry & Health
- Publication Type :
- Academic Journal
- Accession number :
- 178548008
- Full Text :
- https://doi.org/10.1007/s10653-024-01993-6