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- Title
Waste from an Amazon Mining Company Applied as a Catalyst in Photocatalysis Reactions for Environmental Remediation.
- Authors
Lira, Wenderson A. S.; Silva, Emilly C.; Pocrifka, Leandro A.; Passos, Raimundo R.; Oliveira, Amanda C.; Rabelo, Adriano C.
- Abstract
The environmental problem caused by mining companies is known and has been studied by several authors. In this work, a sustainable solution was sought for iron-based waste collected from a mining company. This waste was purified and synthesized as a promising catalyst for degradation of polluting compounds, using methylene blue as a test. The sol–gel synthesis route was efficient for the removal of unwanted residues and for the formation of the α-Fe2O3 product. The material after sol–gel reached about 95.6% of degradation of the methylene blue solution (20 mg L−1), this response that can be attributed to a more porous and less compacted morphology and the presence of a more organized phase. This work assigns a sustainable purpose for iron waste, accumulated in mining companies, and shows that these materials can be as efficient for environmental remediation, as those contained in the literature. Highlights: Purification and sol–gel synthesis of mining waste. Use of mining waste as catalysts for advanced oxidative processes. A sustainable purpose for the environmental problem caused by mining companies.
- Subjects
ENVIRONMENTAL remediation; MINING corporations; MINE waste; PHOTOCATALYSIS; METHYLENE blue; CATALYSTS
- Publication
Water, Air & Soil Pollution, 2022, Vol 233, Issue 7, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-022-05733-3