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Examinando Investigación por Programa "Ingeniería Industrial"
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- ÍtemA critical techno-economic analysis of coffee processing utilizing a modern fermentation system: Implications for specialty coffee production(Universidad Cooperativa de Colombia, campus Pasto. Ingeniería Industrial, 2021) Coral Medina, Jesus David; Magalhaes, Antonio; Dao Pedro, de Carvalho Neto; Gilberto, Melo Pereira; Alexandre , da Silva; Julio, de carvalho; Carlos Ricardo, SoccolFermentation is an important step in coffee processing which promotes the removal of mucilage adhering to the fruits. This process has a direct impact on the coffee quality, and the use of bioreactors and starter cultures has been suggested for process control. In this study, a techno-economic analysis was performed to assess the investment costs and economic performance of the inclusion of a stirred tank bioreactor (STB) model and starter cultures into a coffee processing plant. The total capital investment and production costs for a 45-ton capacity coffee farm operating with 2 STB were US$ 1 million and 0.74 $/kg higher, respectively, than the conventional processing using open tanks. The main factors for rising costs included the implementation of bioreactors (73% of the equipment costs) and starter cultures (88% of the production costs). However, the modern fermentation system (STB with the use of starter cultures) enables the production of specialty coffee beverages with scores among 85.5 and 91.5, which can be sold at 15.50 and 40.92 $/kg, respectively—more than sixteen times the estimated price for commodity coffee. Thus, the techno-economic analysis showed a viable and extremely favorable scenario, providing the economic support for the modernization of coffee fermentation and to value co-creation in the specialty coffee chain
- ÍtemBioeconomy and biofuels: the case of sugarcane ethanol in Brazil(Universidad Cooperativa de Colombia, campus Pasto. Ingeniería Industrial, 2021) Susan, Karp; Jesus David, Coral Medina; Luiz, Letti; Adenice, Woiciechowski; Julio, de carvalho; Caroline, Schmitt; Carlos , SoccolBrazilian bioethanol is one of the most prominent biofuels produced on a large scale, representing 30% of the global fuel ethanol production share. Around 8.6 billion gallons were produced in 2019, second only to the US fuel ethanol production in the same period (15.8 billion gallons). Obtained from sugarcane in a highly energy-efficient process, the biofuel, which can be used in Brazil as 100% ethanol (hydrated, minimum mass content of 92.5%) or in a volume proportion of 27% (anhydrous ethanol) in common gasoline, has contributed to the reduction of oil dependency and CO2 emissions, as well as to the development of an important economic sector. Pioneer biofuel policies and important advances in science and technology led to the establishment of a 46% renewable energy matrix. In this manuscript, an overview of the impacts of ethanol production and utilization will be given, with respect to environmental and socio-economic concerns. The public policies and some technical aspects of sugarcane and ethanol production and energy cogeneration will be reviewed and discussed. © 2021 Society
- ÍtemSimulation of different biorefinery configuration including environmental, technical and economic assay using sugarcane bagasse(Universidad Cooperativa de Colombia, campus Pasto. Ingeniería Industrial, 2021) Coral Medina, Jesús David; Bolaños Alomia, Fabio; Magalhaes, Antonio; Julio, de Carvalho; Adenise, Woiciechowski; Carlos, SoccolDue to growing environmental concerns mainly related to non-renewable fuels and high added-value chemicals, new solutions should reduce greenhouse gas emissions. Biorefineries, which use lignocellulosic biomass as raw material, emerges as a promising alternative to replace fossil fuels and to avoid competition between food and fuel production for arable land and drinking water. Sugarcane is one of the most harvested crops in the world, mainly in the equatorial zone. One tonne of processed cane generates between 300 and 400 kg of bagasse. This work proposes a biorefinery configuration for the co-production of ethanol, xylitol, lignin, and cellulose acetate, analyzing two different scenarios in the context of low sugarcane availability. The analysis included the deter- mination of mass, total capital investment, total manufacturing costs, CO2 footprint, and water consumption. The cellulose acetate, ethanol, and xylitol production were economically viable only if lignin is considered a product. Positive net income, with return on investment in at least ten years, was achieved. Based on the environmental assessment, the carbon capture capacity is about 400 kg per tonne of sugarcane included in the process was determined
- ÍtemTechnical and environmental analysis of large-scale pig manure digestion through process simulation and life cycle assessment(Universidad Cooperaiva de Colombia, 2021) Acevedo, Paola; Amado, Monica; Carrasco, Jessica; Ochoa, Laura; Rangel, Carol; Becerra, Ana Paola; Cabeza, Ivan; Acevedo, Paola; Acevedo, PaolaThe biogas and by-products production from anaerobic digestion of pig manure was evaluated technically, economically, and environmentally in an industrial park in Bogotá, Colombia, in order to generate economic opportunities and to reduce environmental impacts. Mass and energy balances were performed using data from literature and developing a simulation of the AD process in Aspen Plus software based on stoichiometric balances. The environmental evaluation of this process was developed using LCA methodology. Also, the economic viability of the process was evaluated by calculating the internal rate of return and the net present value considering 10 years of life of the plant and equipment. The results of the environmental evaluation show that the stages of transport, and consumption of electrical and thermal energy contribute to the categories of acidification, abiotic, and ozone layer depletion, for both scenarios of interest according to the allocation of the final product. Furthermore, it is established that the project is viable as it has an internal rate of return of 26% and a payback time of 5 years, according to the results of the economic evaluation.