Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Maurício Leonardo Torem"'
Autor:
Carolina Rossini Simões, Matheus Willian Pereira da Silva, Rodrigo Fernandes Magalhães de Souza, Ronald Roja Hacha, Antônio Gutierrez Merma, Maurício Leonardo Torem, Flávia Paulucci Cianga Silvas
Publikováno v:
Resources, Vol 13, Iss 6, p 81 (2024)
The quest for sustainable mining processes has directed research towards environmentally friendly alternatives to conventional beneficiation practices, with biosurfactants emerging as a viable option due to their lower environmental impact. This stud
Externí odkaz:
https://doaj.org/article/12bfb32ddde54f3fb7a4e096a21e5826
Autor:
Amanda M. Rodrigues Pimentel, Patricia Reynoso Quispe, Rita J. Cabello Torres, Lorgio G. Valdiviezo Gonzales, Carlos A. Castañeda Olivera, Antonio Gutiérrez Merma, Iranildes Daniel dos Santos, Maurício Leonardo Torem
Publikováno v:
REM: International Engineering Journal, Vol 75, Iss 2, Pp 137-146 (2022)
Abstract Microbial biomass is considered a renewable and environmentally friendly resource. Thus, the research conducted a kinetic study and thermodynamic equilibrium modeling of the cobalt (Co) and manganese (Mn) bioadsorption process using the Rhod
Externí odkaz:
https://doaj.org/article/13692e5f26fe4d08b14af8da7e9e9ef9
Autor:
Jhonatan Soto Puelles, Antonio Gutierrez Merma, Carlos Alberto Castañeda Olivera, Maurício Leonardo Torem
Publikováno v:
REM: International Engineering Journal, Vol 74, Iss 3, Pp 353-362 (2021)
Abstract The aim of this study is to assess the floatability of hematite using a crude biosurfactant (BS) extracted from Rhodococcus opacus. Throughout high-pressure ethanol extraction, unrefined surfactant was extracted from the bacteria with a yiel
Externí odkaz:
https://doaj.org/article/e54bc25b3b494985b573c44bee51c7bc
Autor:
José Jonathan Vallejos Morán, Carlos Alberto Castañeda Olivera, Lorgio Valdiviezo Gonzalez, Antonio G. Merma, Maurício Leonardo Torem
Publikováno v:
REM: International Engineering Journal, Vol 74, Iss 3, Pp 369-377 (2021)
Abstract Adsorption of microorganisms and/or their different components onto a mineral surface would modify the surface characteristics of the mineral. Thus, this investigation evaluated the adsorption capacity of the Rhodococcus opacus strain onto a
Externí odkaz:
https://doaj.org/article/af2ed412e1bb40709f545f37542a9579
Autor:
Antonio Gutiérrez Merma, Carlos Alberto Castañeda Olivera, Ronald Rojas Hacha, Maurício Leonardo Torem, Brunno Ferreira dos Santos
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 3, Pp 3076-3087 (2019)
Mineral flotation using microorganisms and/or their derived products is called “bioflotation.” This is a promising process due to its low environmental impact; however, it is also a very complicated process, due to its multidisciplinary character
Externí odkaz:
https://doaj.org/article/fbefe3cba2fd4553a3cbe64684ed5e70
Autor:
Afonso Henriques Martins, Hugo Walisson Silva, Antônio Clark Peres, Carlos Alberto Pereira, Maurício Leonardo Torem, Achilles Junqueira Dutra
Publikováno v:
Holos, Vol 4, Iss 0, Pp 3-11 (2014)
Este trabalho apresenta os resultados experimentais para a recuperação de estanho presente em soluções aquosas a parir da reciclagem de computadores sucatados, através da técnica de eletroeluição de resina polimérica catiônica Amberlite IR-
Externí odkaz:
https://doaj.org/article/f8574f0e7098418192b9e1c16e5755cf
Autor:
Luiz Carlos Bertolino, Maurício Leonardo Torem, Rosa Bernstein Scorzelli, Alexandre Malta Rossi
Publikováno v:
Holos, Vol 5, Iss 0, Pp 83-92 (2012)
Na região de Prado, sul da Bahia, Brasil, ocorre um importante depósito de caulim que tem sido explorado pela Mineração de Caulim Monte Pascoal desde 1992. O caulim destina-se principalmente à indústria do papel e para produção de catalisador
Externí odkaz:
https://doaj.org/article/ad16f0447ed14aefbe0d9762886b47ef
Publikováno v:
REM: International Engineering Journal, Vol 70, Iss 1, Pp 67-76
Abstract It is well known that the culture conditions of microorganisms may affect their surface properties, zeta potential and hydrophobicity via the modification of the cell wall functional groups or metabolic products. The R. opacus bacteria strai
Externí odkaz:
https://doaj.org/article/77db1c36b8bf4277929bd77386320146
Publikováno v:
REM: International Engineering Journal, Vol 72, Iss 4, Pp 655-659
Abstract The use of biosurfactants as reagents represents a promising alternative to the conventional surfactants used in the mineral industry because they may present low toxicity and high biodegradability. Therefore, this research studied the hemat
Externí odkaz:
https://doaj.org/article/cd5cf439e24a48afb56f2d1af3095ad9
Autor:
Antonio Gutiérrez Merma, Ronald Rojas Hacha, Marcelo Carneiro Camarate, Maurício Leonardo Torem
Publikováno v:
Separation Science and Technology. 57:36-47
In the last decade the mineral industry has been working in order to face its biggest challenge: The processing of ultrafine mineral particles. Several techniques and processes have been used to im...