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Chemical and nano-mineralogical study for determining potential uses of legal Colombian gold mine sludge: Experimental evidence


Sánchez, Nazly E.
Narváez-Semanate, José Luis
Pabón Patiño, Daniela
Fernández Mera, Javier E.
Silva Oliveira, Marcos Leandro
Da Boit Martinello, Katia
Fonseca Tutikian, Bernardo
Crissien Borrero, Tito José
Pinto, Diana C.
Serrano Arrieta, Ivan Dario
Ayala Rueda, Claudia Ines
Duarte Gonzalez, Ana Lucia
Ruiz Ariza, Jose David
Silva Oliveira, Luis Felipe

Artículo de revista

2018-01

Chemosphere

https://doi.org/https://doi.org/10.1016/j.chemosphere.2017.08.127

00456535

FertilizerBuscar en Repositorio UMECIT
Gold mineBuscar en Repositorio UMECIT
SludgeBuscar en Repositorio UMECIT
Tailing pondsBuscar en Repositorio UMECIT

The present study is focused on the chemical and nano-mineralogical characterization of sludge from gold mine activities, in order to put forward diverse solution alternatives, where lack of knowledge has been found. The sample was collected from “La Estrella” mine of Suarez, located in Department of Cauca, south-west Colombia. The sludge micro-structure and chemical composition were analyzed using a high resolution transmission electron microscopy (HR-TEM) equipped with a dispersive X-ray detector (EDS). X-ray diffraction technique was employed to identify the mineralogical phases present in the sludge. Additional mineralogical characterization was done by using RAMAN spectroscopy. Main findings points to its potential to be used as a fertilizer, this is why, mine sludge contains macronutrients such as P, Ca and S, together with micronutrients like Cu. However, the presence of goethite could decrease the mobilization of nutrients to soils, thus additional alternatives, for instance, a mixture with humus or another material containing Humic Acids should be done, in order to minimizing its retention effect. Additionally, another possible uses to explore could be as construction and ceramic material or in the wastewater treatment for nutrient retention and organic material removal. Rutile (TiO2 nanoparticles) particles have been also detected, what could cause health concern due to its nanoparticle toxic character, mainly during gold extraction process.

http://hdl.handle.net/11323/1906

  • Artículos científicos [2634]

Descripción: Chemical and nano-mineralogical study for determining potential uses of legal.pdf
Título: Chemical and nano-mineralogical study for determining potential uses of legal.pdf
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