Browsing by Author "Andrade Herrera, Christian Javier"

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Análisis de la calidad de agua de riego de la junta 54-A y su incidencia en la actividad de los usuarios
(2019-10-03) Andrade Herrera, Christian Javier; Astudillo Ochoa, Sonia Margoth
The purpose of this project is to analyze and study the water quality of the irrigation canal that passes through the areas of Checa, Sidcay and Ricaurte (parishes adjacent to the Cuenca canton) through the use of water quality indicators, in order to recommend plans of improvement that prevent the contamination of the irrigation system, improving the water quality and the well-being of the users that consume said resource. This research project is focused on the analysis of certain physical, chemical and microbiological parameters previously studied with the Ministry of Water; where water quality results will be obtained that will serve as a basis for decision-making, awareness, education and continuous improvement criteria that guarantee the health and well-being of the population that uses this surface water source, considering that it is a well from which hundreds of citizens benefit. The data were analyzed in such a way that graphs were developed that denote how certain pollutants in the water vary over time and distance, where key points of contamination have been identified for which possible solutions have been proposed for the partners who use this Water source for your day to day.
Design and development of a catalytic fixed-bed reactor for gasification of banana biomass in hydrogen production
(2022) Tacuri Sarmiento, Diego Mauricio; Andrade Herrera, Christian Javier; Álvarez Lloret, Edgar Paúl; Abril González, Mónica Fernanda; Salamea Piedra, Teresita Silvana; Pinos Vélez, Verónica Patricia; Jara Cobos, Lourdes Elizabeth; Montero Izquierdo, Iván Andrés
Hydrogen produced from biomass is an alternative energy source to fossil fuels. In this study, hydrogen production by gasification of the banana plant is proposed. A fixed-bed catalytic reactor was designed considering fluidization conditions and a height/diameter ratio of 3/1. Experimentation was carried out under the following conditions: 368 °C, atmospheric pressure, 11.75 g of residual mass of the banana (pseudo-stem), an average particle diameter of 1.84 mm, and superheated water vapor as a gasifying agent. Gasification reactions were performed using a catalyzed and uncatalyzed medium to compare the effectiveness of each case. The catalyst was Ni/Al2O3, synthesized by coprecipitation. The gas mixture produced from the reaction was continuously condensed to form a two-phase liquid–gas system. The synthesis gas was passed through a silica gel filter and analyzed online by gas chromatography. To conclude, the results of this study show production of 178 mg of synthesis gas for every 1 g of biomass and the selectivity of hydrogen to be 51.8 mol% when a Ni 2.5% w/w catalyst was used. The amount of CO2 was halved, and CO was reduced from 3.87% to 0% in molar percentage. Lastly, a simulation of the distribution of temperatures inside the furnace was developed; the modeled behavior is in agreement with experimental observations.