Use of coal ash to restore acid mine drainage in the Moatize mine tete province, Mozambique

Autores/as

  • Esnaider Rodríguez Suárez UniTiva University
  • Julio O. Prieto García Universidad Central de Las Villas
  • Loide Augusto Furtado Higher Institute of Science and Technology of Mozambique

Palabras clave:

Acid mine drainage, coal ash, fine coal refuse, remediation, static and dynamic methods

Resumen

The purpose of this research is to assess the potential of using coal ash for restoring Acid Mine Drainage. For this purpose, we decided to determine the physical-chemical composition of the coal waste, coal ash and effluent, where physical and chemical parameters were assessed. Mineralogical characterization of tailings was carried out, where quartz, kaolinite, siderite, palygorskite, muscovite and dolomite were verified. Geochemical characterization of coal ash was also done, where found Si, Al, Fe, K, Ca, Ti as the main elements and presence of Cu, Cr, Zn, Rb, Ir, Mn, As, Y, Pb, Nb, Th as trace elements, being defined by the X-Ray Diffraction and X-Ray Fluorescence method. The dynamic and the static of Fizz test methods were used, which showed the maximum time of absorption for H+ ions from the activation of ashes in the effluent. Satisfactory results were obtained after calcination, since the main acid-generating elements contained in the fine residues were converted to trace elements. The pH of the ashes was found to be neutral. It is concluded that coal ashes from fine coal tailings have the power to restore the Acid Mine Drainage.

Descargas

Los datos de descargas todavía no están disponibles.

Citas

GLASTEIN, A. & MATÍAS, F. (2023). Potencial de alcalinización de escorias siderúrgicas para el tratamiento de drenajes ácidos de mina. Boletín de la Soceidad Geológica Mexicana, 75(1), 1-10.

GRAY, M. (2004). Geodiversity. Valuing and conserving abiotic nature. John Wiley & Sons Ltd, England.

KONTOPOULOS, A. (1998). Acid mine drainage control. In S. lcastro Effluent treatment in the mining industry. Chile: University of Concepcion. 57-118;

LAKATOS, E. M. & MARCONI, M. (2018). Fundamentos de Metodologia científica. São Paulo: Atlas.

LEIVA, A., NEGRELLI, M. & HIDALGO, N. (2021). Predicción y estudio de drenaje de mina sobre mineral de escombrera. Revista Colombiana de Materiales, 18, 3-20.

MEND. (2009). Prediction Manual for Drainage Chemistry from Sulphidic Geologic Materials. Department of Energy, Energy Mines and Resources. Mend Report1.20.1. Canada.

MINISTÉRIOS DOS RECUERSOS MINERAIS. (2006). Diploma Ministerial 189. Normas básicas de Gestão Ambiental para a Actividade Mineira. Imprensa Naciona de Moçambique. https://gazettes.africass/archive/mz/2006/mz-governmetn-gazette-series-i-supplement-dated-2006-12-14-no-50.pdf.

PARDAVÉ, W., DELVASTONE, P., SERRANO, B. & PALACIOS, J. (2023). Tratamiento de drenajes ácidos de mina mediante filtros elaborados con polvo de acería. AiBi Revista de Investigación, Administración e Ingeniería, 11(1), 48-57. https://revistas.udes.edu.co/aibi/article/view/tratamiento_de_drenajes_acidos_de_mina_mediante_filtros_elaborados_con_polvo_de_aceria

QUEROL, X., UMAÑA, J.C., PLANA, F., ALASTEUEY, A., LÓPEZ-SOLER, A., MEDIANICELI, A. & GARCIA, E. (2001). A. Synthesis of zeolites from fly ash at pilot plant scale. Examples of potential applications, 80(6), 857–865. http://doi.org/10.1016/S0016(00)001156-3.

U.S. ENVIRONMENTAL PROTECTION AGENCY - U.S. EPA. (2009). Method 1627: Kinetic Method for Prediction of Mine Drainage Quality. Technical Document.EPA 821-R-09-002. pp 1-40. https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5336546

WANG, S. & WU, H. 2006. Environmental-benign utilization of fly ash as low-cost Adsorbents. J. Hazard Mater. Pp136 - 140.

WEBER, P., SXTEWART, W. A., SKINNER, W., EISENER, C, THOMAS, J. & SMART, R. 2004. Geochemical effects of oxidation products and framboidal pyrite oxidation in acid mine drainage prediction techniques. Applied Geochemistry, 19(12), 1953-1974. https://www.sciencedirect.com/science/article/abs/pii/S088329270400143X.

Publicado

2023-07-13

Cómo citar

Rodríguez Suárez, E., Prieto García, J. O., & Augusto Furtado, L. (2023). Use of coal ash to restore acid mine drainage in the Moatize mine tete province, Mozambique. Ciencia & Futuro, 13(2), 203–217. Recuperado a partir de https://revista.ismm.edu.cu/index.php/revistacyf/article/view/2313

Número

Sección

Ciencia Universitaria