Zobrazeno 1 - 10
of 226
pro vyhledávání: '"Hugo Alfonso"'
Autor:
Julie Joseane Murcia, Mónica Sirley Hernández-Laverde, Ivan Alexander Correa-Camargo, Hugo Alfonso Rojas-Sarmiento, José Antonio Navío, Maria del Carmen Hidalgo-López
Publikováno v:
Revista Facultad de Ingeniería Universidad de Antioquia (2024)
In this work, Titania was modified by sulfation or fluorination and platinum on the surface to improve the Cr (VI) reduction efficiency compared to the bare TiO2 material synthesized by the sol-gel method. The synthesized materials were characterized
Externí odkaz:
https://doaj.org/article/d0961b3e50ec47fca7471f2ce3179cf1
Autor:
Carolina Salto, Gabriela Minetti, Hugo Alfonso, Erica Zurita, Jose Hernandez, Mercedes Carnero
Publikováno v:
Chemical Engineering Transactions, Vol 100 (2023)
Water is becoming an essential commodity for human life and is one of the most important natural resources. Public water utilities provide more than 90 percent of the world's water supply today, so a safe water distribution system is critical for any
Externí odkaz:
https://doaj.org/article/081157ea9f9e47f980cffa21adbb63c9
Autor:
Jhon Sebastián Hernández-Niño, Julie Joseane Murcia-Mesa, Hugo Alfonso Rojas-Sarmiento, María del Carmen Hidalgo, Jose Antonio Navío-Santos
Publikováno v:
Revista Facultad de Ingeniería Universidad de Antioquia (2022)
In this study, ZnO/TiO2 and ZnO/Nb2O5 photocatalysts were evaluated in the river pollution remediation and wastewater treatment from textile factories, thus, the target pollutants selected for this study were enteropathogenic bacteria and commercial
Externí odkaz:
https://doaj.org/article/6454f3fbc65941e5ae49d7c61463d5a2
Autor:
Julie Joseane Murcia Mesa, Ceidy Geraldine Patiño Castillo, Hugo Alfonso Rojas Sarmiento, José Antonio Navío Santos, María del Carmen Hidalgo López, Alberto Angel Botero
Publikováno v:
Revista Facultad de Ingeniería Universidad de Antioquia, Iss 107 (2021)
The aim of the present work was to evaluate the effectiveness of a heterogeneous photocatalyst based on TiO2 in the treatment of coal mining drainage which contains a variety of heavy metals and high concentration sulfates and sulfides. The photocata
Externí odkaz:
https://doaj.org/article/c18c29052ba3469e9f171c64bb06022d
Autor:
Iván Supelano García, Carlos Andrés Palacio Gómez, Marc H. Weber, Indry Milena Saavedra Gaona, Claudia Patricia Castañeda Martínez, José Jobanny Martínez Zambrano, Hugo Alfonso Rojas Sarmiento, Julian Andrés Munevar Cagigas, Marcos A. Avila, Carlos Rettori, Carlos Arturo Parra Vargas, Julieth Alexandra Mejía Gómez
Publikováno v:
Condensed Matter, Vol 7, Iss 4, p 69 (2022)
The extensive production of coal fly ash by coal combustion is an issue of concern due to its environmental impact. TiO2-zeolite composites were synthesized, at low cost, using recycled coal fly ash from a local thermoelectric power plant to produce
Externí odkaz:
https://doaj.org/article/d55150b99ba3413ab2982df4cc3e5762
Publikováno v:
Logos Ciencia & Tecnología, Vol 11, Iss 1, Pp 77-86 (2019)
Durante el lavado de agregados pétreos para la ejecución de ensayos en el laboratorio se consumen grandes cantidades de agua. En el presente estudio se estimó, el volumen de agua que se utiliza cuando se realiza el diseño de una mezcla asfáltica
Externí odkaz:
https://doaj.org/article/748078d9a2744f8ca35aaf8b48b5812f
Publikováno v:
Dyna, Vol 87, Iss 214 (2020)
Cutinases are secreted by filamentous fungi that and hydrolyze polymers. However, few selection methods for cutinases are available. Here, we studied three screening methods using 33 strains of filamentous fungi isolated from banana rachis with high
Externí odkaz:
https://doaj.org/article/43b3b3ce85c142fc8c5867abbe52fe01
Autor:
Sandra Patricia Chaparro-Acuña, Mónica Liliana Becerra-Jiménez, José Jobanny Martínez-Zambrano, Hugo Alfonso Rojas-Sarmiento
Publikováno v:
Acta Agronómica, Vol 67, Iss 2, Pp 277-288 (2018)
Bacteria with ureasic activity are microorganisms found in soil that in presence of urea and calcium, they can produce calcium carbonate, a process known as microbiologically induced calcium carbonate precipitation (MICP). This article discusses this
Externí odkaz:
https://doaj.org/article/2e51242e7931406d90a23a675af72e9f
Autor:
Sebastián Sierra-Pérez, Néstor Ricardo Rojas-Reyes, José Martínez-Zambrano, Hugo Alfonso Rojas-Sarmiento
Publikováno v:
Revista Facultad de Ingeniería Universidad de Antioquia, Iss 89, Pp 44-51 (2018)
En el presente proyecto se analiza la recuperación de wolframio y cobalto a partir de residuos de herramientas fabricadas con carburo de wolframio - cobalto (WC-Co), las cuales son muy empleadas en la industria metalmecánica. El residuo de WC-Co se
Externí odkaz:
https://doaj.org/article/325c72b66164447cbef8221dd6ff841c
Publikováno v:
Revista Facultad de Ingeniería Universidad de Antioquia, Iss 89, Pp 73-80 (2018)
Se ha explorado la epoxidación enantioselectiva de estireno utilizando dimetildioxirano (DMD) generado in-situ y un complejo de base de Schiff homoquiral dimérico de Mn (III). Los parámetros evaluados fueron la relación molar olefina/oxidante, la
Externí odkaz:
https://doaj.org/article/78ba47a5dc1a49f3ac7b977528fb5586