Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Pía Hernández"'
Autor:
Alejandro Maureira, Manuel Zapata, Jorge Olave, David Jeison, Liey-Si Wong, Antonio Panico, Pía Hernández, Luis A. Cisternas, Mariella Rivas
Publikováno v:
Frontiers in Bioengineering and Biotechnology, Vol 12 (2024)
In this study, native ureolytic bacteria were isolated from copper tailings soils to perform microbial-induced carbonate precipitation (MICP) tests and evaluate their potential for biocement formation and their contribution to reduce the dispersion o
Externí odkaz:
https://doaj.org/article/c634e29c696248c58357106d5e7225d4
Publikováno v:
Minerals, Vol 13, Iss 1, p 22 (2022)
Currently, the use of called “green solvents” is a challenge that must be assumed by the industry, since they contribute to a friendly process and where its use has been extended, causing research needs, and recognition of application and analysi
Externí odkaz:
https://doaj.org/article/8a1f13a642644982a3604e88477cf02b
Autor:
Rossana Sepúlveda, Norman Toro, Pía Hernández, Patricio Navarro, Cristian Vargas, Edelmira Gálvez, Jonathan Castillo
Publikováno v:
Metals, Vol 12, Iss 6, p 1053 (2022)
Recent works suggest that the use of ionic liquids in the copper solvent extraction industry is feasible. However, the reports did not use real solutions (or synthetic solutions with various elements). This fact remains poorly established, and the in
Externí odkaz:
https://doaj.org/article/b21f79921ba840429c77fd0f5bbc4925
Autor:
Jonathan Castillo, Norman Toro, Pía Hernández, Patricio Navarro, Cristian Vargas, Edelmira Gálvez, Rossana Sepúlveda
Publikováno v:
Metals, Vol 11, Iss 10, p 1585 (2021)
The leaching of copper ores produces a rich solution with metal interferences. In this context, Fe(III), Zn(II), and Mn(II) are three metals contained in industrial copper-rich solutions in high quantities and eventually can be co-extracted with the
Externí odkaz:
https://doaj.org/article/6495fc3385324231a8c322d025344460
Autor:
Giselle Araya, Norman Toro, Jonathan Castillo, Danny Guzmán, Alexis Guzmán, Pía Hernández, Ricardo I. Jeldres, Rossana Sepúlveda
Publikováno v:
Metals, Vol 10, Iss 5, p 627 (2020)
In this study, weak acid in the curing and leaching stages of copper ore was incorporated, and we analyzed its effect on the dissolution of copper and final impurities. The weak acid corresponds to a wastewater effluent from sulfuric acid plants prod
Externí odkaz:
https://doaj.org/article/68d7870436e1472ba920e19f39e73529
Autor:
Pía Hernández, Alexis Dorador, Monserrat Martínez, Norman Toro, Jonathan Castillo, Yousef Ghorbani
Publikováno v:
Minerals, Vol 10, Iss 5, p 477 (2020)
A less harmful approach for the environment regarding chalcopyrite concentrate leaching, using seawater/brine and caliche’s salts as a source of chloride and nitrate ions, was investigated. Different variables were evaluated: sulfuric acid concentr
Externí odkaz:
https://doaj.org/article/2fce5bf7ee85423aa6a9ce6c40510043
Publikováno v:
Metals, Vol 10, Iss 4, p 551 (2020)
Hydrometallurgical processing of chalcopyrite is of great interest today due to the depletion of oxidized copper minerals. This will also enable existing plants to continue operation. The objective of this work is to study the behavior of chalcopyrit
Externí odkaz:
https://doaj.org/article/33992e5ee99a4db1a4e938c18df8f56b
Autor:
Manuel Saldaña, Norman Toro, Jonathan Castillo, Pía Hernández, Emilio Trigueros, Alessandro Navarra
Publikováno v:
Metals, Vol 9, Iss 8, p 903 (2019)
Multivariable analytical models provide a descriptive (albeit approximate) mathematical relationship between a set of independent variables and one or more dependent variables. The current work develops an analytical model that extends a design of ex
Externí odkaz:
https://doaj.org/article/dbc422373a1b44f8b73c8e79423a3101
Publikováno v:
Minerals, Vol 9, Iss 7, p 421 (2019)
The importance of mine planning is often underestimated. Nonetheless, it is essential in achieving high performance by identifying the potential value of mineral resources and providing an optimal, practical, and realistic strategy for extraction, wh
Externí odkaz:
https://doaj.org/article/daf753727ead41b481b5f6d9861b8db4
Autor:
Norman Toro, Williams Briceño, Kevin Pérez, Manuel Cánovas, Emilio Trigueros, Rossana Sepúlveda, Pía Hernández
Publikováno v:
Metals, Vol 9, Iss 7, p 780 (2019)
Chalcocite is the most important and abundant secondary copper ore in the world with a rapid dissolution of copper in an acid-chloride environment. In this investigation, the methodology of surface optimization will be applied to evaluate the effect
Externí odkaz:
https://doaj.org/article/63302d66c2514b86b208f607ec5fe697