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Título: | Manganese and limestone interactions during mine water treatment. |
Autor(es): | Silva, Adarlêne Moreira Cruz, Flávio Luciano dos Santos Lima, Rosa Malena Fernandes Teixeira, Mônica Cristina Leão, Versiane Albis |
Palavras-chave: | Manganese Limestone Mine waters Acid mine drainage |
Data do documento: | 2010 |
Referência: | SILVA, A. M. et al. Manganese and limestone interactions during mine water treatment. Journal of Hazardous Materials, v. 181, p. 514-520, 2010. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0304389410006278>. Acesso em: 06 mar. 2015. |
Resumo: | Manganese removal from mining-affected waters is an important challenge for the mining industry. Addressed herein is this issue in both batch and continuous conditions. Batch experiments were carried out with synthetic solutions, at 23±2 ◦C, initial pH 5.5 and 8.3 g limestone/L. Similarly, continuous tests were performed with a 16.5 mg/L Mn2+ mine water, at 23 ◦C, initial pH 8.0 and 20.8 g limestone/L. Calcite limestone gave the best results and its fine grinding proved to the most effective parameter for manganese removal. In either synthetic solutions or industrial effluents, the final manganese concentration was below 1 mg/L. A change in limestone surface zeta potential is observed after manganese removal and manganese carbonate formation was suggested by IR spectroscopy. The conclusion is that limestone can remove manganese from industrial effluents for values that comply with environmental regulations. |
URI: | http://www.repositorio.ufop.br/handle/123456789/5148 |
DOI: | https://doi.org/10.1016/j.jhazmat.2010.05.044 |
ISSN: | 0304-3894 |
Licença: | O periódico Journal of Hazardous Materials concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3585900975231. |
Aparece nas coleções: | DEMIN - Artigos publicados em periódicos |
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ARTIGO_ManganesesLimestonesInteractions.pdf | 387,68 kB | Adobe PDF | Visualizar/Abrir |
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