4 documents found, page 1 of 1
Advanced monitoring of abandoned mining sites with High-Resolution UAV Technology
Barroso, Ana Raquel; Henriques, Renato F.; Cerqueira, Ângela; Gomes, Patrícia; Antunes, Isabel Margarida Horta Ribeiro; Marinho Reis, A. Paula[Excerpt] In the past decade, unmanned aerial vehicles (UAVs), or drones, have become invaluable tools in the mining industry, supporting applications ranging from mineral exploration to environmental remediation. When equipped with high resolution image sensors, UAVs enable high spatial and temporal resolution surveying, making them particularly effective for monitoring abandoned mining sites. This paper prese...
Improved acidity estimation by integrating comprehensive dissolved metal(oid)s ...
Barroso, Ana Raquel; Cravotta III, Charles A.; Gomes, Patrícia; Antunes, Isabel Margarida Horta Ribeiro; Marinho Reis, A. PaulaThis study introduces a geochemical modeling approach using PHREEQC to improve the accuracy of acidity estimates in waters influenced by acid mine drainage (AMD). AMD, common in regions like the Iberian Pyrite Belt, is characterized by low pH and high concentrations of metals, sulfate and acidity. Conventional methods, such as net acidity, often underestimate actual acidity by excluding additional metal(oid) s ...
Characterization and modeling of acid mine drainage in a highly acidic stream (...
Barroso, Ana Raquel; Valente, Teresa Maria Fernandes; Reis, Amélia Paula; Antunes, Isabel Margarida Horta Ribeiro; Neves, Maria IsabelThe Trimpancho mining complex is a group of abandoned mines affected by acid mine drainage. The present work was focused on studying the hydrochemical behavior of the receiving stream and the secondary phases associated with potential natural attenuation processes. The results indicate extreme acidity conditions, with pH in the range of 1,97 to 2,87. At the time of the sampling campaign, no clear spatial distin...
Application of statistical models to estimate total dissolved solids in acid mi...
Barroso, Ana Raquel; Valente, Teresa Maria Fernandes; Reis, Amélia Paula; Antunes, Isabel Margarida Horta RibeiroThe present study presents an unexplored statistical approach using linear and multiple regression to estimate total dissolved solids in acid mine waters. One hundred twenty-one samples were collected from three distinct abandoned mining areas in the Iberian Peninsula: Valdarcas, São Domingos, and Campanario. The parameters analyzed included pH, electrical conductivity, total dissolved solids, acidity, and sulf...