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dc.contributorMultidisciplinary Digital Publishing Institute (MDPI) [Switzerland]es_CL
dc.contributor.authorRodríguez, Carolina [Pontificia Universidad Católica de Chile. Departamento de Ingeniería Hidráulica y Ambiental]es_CL
dc.contributor.authorLeiva Aravena, Enzo [Pontificia Universidad Católica de Chile. Departamento de Ingeniería Hidráulica y Ambiental]es_CL
dc.contributor.authorLeiva, Eduardo [Pontificia Universidad Católica de Chile. Facultad de Química]es_CL
dc.contributor.authorSerrano, Jennyfer [Chile. Universidad Mayor. Escuela de Biotecnología]es_CL
dc.date.accessioned2018-08-23T00:20:56Z
dc.date.available2018-08-23T00:20:56Z
dc.date.issued2018es_CL
dc.identifier.citationRodríguez, C.; Leiva-Aravena, E.; Serrano, J.; Leiva, E. Occurrence and Removal of Copper and Aluminum in a Stream Confluence Affected by Acid Mine Drainage. Water 2018, 10, 516. https://doi.org/10.3390/w10040516es_CL
dc.identifier.issnISSN 2073-4441es_CL
dc.identifier.urihttp://repositorio.umayor.cl/xmlui/handle/sibum/2480
dc.identifier.urihttp://www.mdpi.com/2073-4441/10/4/516/pdfes_CL
dc.identifier.urihttps://doi.org/10.3390/w10040516es_CL
dc.description.abstractAcid mine drainage (AMD) is an environmental concern characterized by low pH and high concentrations of dissolved metals and sulfate. Yerba Loca Creek in Santiago, Chile, is an AMD-affected water stream that originates in a glacier and, therefore, has a season-dependent flow. This water course is characterized by low pH (3.75 ± 0.13) and high concentrations of aluminum (2.2–2.6 mg/L) and copper (4.8–6.5 mg/L). A field campaign was carried out to study the geochemical behavior around the confluence of the Yerba Loca Creek with the San Francisco River, which has a neutral pH and low concentration of dissolved metals. The results show that the geochemical parameters after the confluence are very similar to those registered for the Yerba Loca Creek, due to its great flow in relation to the San Francisco River. The pH after the mixing zone was controlled by the geochemical conditions and flow of the Yerba Loca Creek; however, the turbidity decreases and stabilizes downstream. We found that, despite the low impact of pH on the precipitation of aluminum and copper phases due to poor neutralization, the dissolved aluminum and copper concentrations are slightly decreased after the mixing zone by natural microscale removal processes or suspended solids formation. Scanning electron microscopy–energy-dispersive X-ray spectroscopy (SEM–EDX) analysis of suspended solids indicates the presence of various oxides, hydroxy-sulfates and aluminosilicates, which have a great affinity for adsorption and co-precipitation with dissolved metals (i.e., Al and Cu). A pH-neutralization would favor the formation of more minerals and, therefore, the immobilization of the heavy metals found in these waters. These results contribute to a better understanding of the effect of the confluence of water courses related to pollution by AMD. It is possible that the seasonal variation of the flows has an impact on the composition of water and minerals formed.es_CL
dc.description.sponsorshipEste trabajo no declara proyecto(s) ni fondo(s) de financiamiento asociado(s)es_CL
dc.format.extentARTÍCULO ORIGINALes_CL
dc.language.isoenes_CL
dc.publisherFacultad de Cienciases_CL
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chilees_CL
dc.subjectCIENCIAS DE LA SALUDes_CL
dc.titleOcurrence and Removal of Copper and Aluminum in a Stream Confluence Affected by Acid Mine Drainagees_CL
dc.typeArtículo o Paperes_CL
umayor.indizadorCOTes_CL
umayor.politicas.sherpa/romeos/datoes_CL
umayor.indexadoSCOPUSes_CL
dc.identifier.doi10.3390/w10040516es_CL]
umayor.indicadores.wos-(cuartil)Q2es_CL
umayor.indicadores.scopus-(scimago-sjr)0.548es_CL


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