Zobrazeno 1 - 10
of 108
pro vyhledávání: '"David Jeison"'
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
Autor:
Héctor Zúñiga-Barra, Eduardo Ortega-Martínez, Javiera Toledo-Alarcón, Álvaro Torres-Aravena, Lorena Jorquera, Mariella Rivas, David Jeison
Publikováno v:
Minerals, Vol 13, Iss 4, p 506 (2023)
Mining activities offer clear economic benefits for mineral-rich countries. However, mining operations can produce several environmental impacts. Many of these are associated with generating and managing mining waste known as tailings, which are typi
Externí odkaz:
https://doaj.org/article/ba2ecc7fe6ed4dc3a09b0055357d0f7c
Publikováno v:
Applied Sciences, Vol 12, Iss 23, p 12194 (2022)
An alternative way to remove CO2 from biogas is the use of photosynthetic microorganisms, such as microalgae. This can be achieved by the operation of an open photobioreactor, connected with a mass transfer column, such as a counterflow column. This
Externí odkaz:
https://doaj.org/article/61bcebf60be54d84a821e9681fdff119
Publikováno v:
Fermentation, Vol 8, Iss 3, p 102 (2022)
The culture medium in many fermentations is a non-Newtonian fluid. In bacterial alginate batch production, the broth becomes more pseudoplastic as the alginate concentration increases, which impairs the mixing process. This work characterizes the eff
Externí odkaz:
https://doaj.org/article/1fa5b137f5914b7495e48a4476ca73f6
Autor:
Sebastián Sepúlveda, Carla Duarte-Nass, Mariella Rivas, Laura Azócar, Andrés Ramírez, Javiera Toledo-Alarcón, Leopoldo Gutiérrez, David Jeison, Álvaro Torres-Aravena
Publikováno v:
Minerals, Vol 11, Iss 8, p 905 (2021)
This research focused on the evaluation of the potential use of a soil-isolated bacteria, identified as Staphylococcus equorum, for microbial-induced calcite precipitation (MICP) and copper removal. Isolated bacteria were characterized considering gr
Externí odkaz:
https://doaj.org/article/35e9663d2459493288cda99dbddeefd3
Autor:
Freddy Valdés, Priscila Rosseto Camiloti, Jan Bartacek, Álvaro Torres-Aravena, Javiera Toledo-Alarcón, Marcelo Zaiat, David Jeison
Publikováno v:
Polymers, Vol 12, Iss 9, p 1990 (2020)
Sulfide produced by sulphate-reducing bacteria in anaerobic reactors can seriously affect biogas quality. Microaeration has become a reliable way to remove sulfide, by promoting its oxidation. However, limited research is available regarding its appl
Externí odkaz:
https://doaj.org/article/480c8edf22f14b8c985b7aa108c16938
Autor:
Dafne Crutchik, Oscar Franchi, Luis Caminos, David Jeison, Marisol Belmonte, Alba Pedrouso, Angeles Val del Rio, Anuska Mosquera-Corral, José Luis Campos
Publikováno v:
Water, Vol 12, Iss 4, p 1118 (2020)
Sludge is a by-product of municipal wastewater treatment plants (WWTPs) and its management contributes significantly to the operating costs. Large WWTPs usually have anaerobic sludge digesters to valorize sludge as methane and to reduce its mass. How
Externí odkaz:
https://doaj.org/article/49a81889dec442549933d1fef7192fce
Publikováno v:
Polymers, Vol 11, Iss 2, p 191 (2019)
Massive production and disposal of petrochemical derived plastics represent relevant environmental problems. Polyhydroxyalkanoates (PHA) are a renewable alternative that can even be produced from wastes. The production of PHA from acetate using mixed
Externí odkaz:
https://doaj.org/article/c51cd463d5c64e93836974d3a71b23be
Publikováno v:
Revista Ingenierías Universidad de Medellín, Vol 12, Iss 22, Pp 25-32 (2013)
Si bien los precios de las membranas han experimentado una reducción notable, estas siguen siendo parte importante del costo asociado a la implementación de biorreactores de membrana (BRM) para el tratamiento de aguas residuales. La operación de B
Externí odkaz:
https://doaj.org/article/876ff8f090b748cbab35643ce88cc1ed
Autor:
Álvaro Esteban Torres-Aravena, Carla Duarte-Nass, Laura Azócar, Rodrigo Mella-Herrera, Mariella Rivas, David Jeison
Publikováno v:
Crystals, Vol 8, Iss 11, p 438 (2018)
Microbially induced calcite precipitation (MICP) through a ureolytic pathway is a process that promotes calcite precipitation as a result of the urease enzymatic activity of several microorganisms. It has been studied for different technological appl
Externí odkaz:
https://doaj.org/article/c3785b3816cb4fa3bec19c6368616d59