Show simple item record

dc.contributor.advisorCobo Ángel, Martha Isabel
dc.contributor.advisorco-asesor
dc.contributor.authorCañón Pérez, Cristhian David
dc.date.accessioned2022-09-09T17:14:32Z
dc.date.available2022-09-09T17:14:32Z
dc.date.issued2022-07-21
dc.identifier.urihttp://hdl.handle.net/10818/51666
dc.description96 páginases_CO
dc.description.abstractValorization of agro-industrial wastes into valuable products is an alternative to boost the economic and social development of those regions where agricultural practices are unsustainable. Herein, upgrading of Colombian rice straw (RS) to ethyl levulinate (EL) was considered as an alternative fulfill the aforecited goal. To do so, a technical and environmental analysis were carried out. Process design was performed using Aspen Plus v12. Life Cycle Assessment (LCA) methodology was used to estimate the environmental impacts using ILCD 2011 midpoint + impact assessment method. The product system was a cradle-to-gate approach, including the cultivation stage and the biorefinery process using dilute acid hydrolysis. Said stage encompasses: (i) RS pretreatment; (ii) levulinic acid (LA) purification; and (iii) EL production. Concerning the technical analysis, the overall yield obtained was 0.115 kg EL/kg RS with a total energy consumption of 37kWh/kg of EL produced. Energy consumption was associated with high-water requirements needed to hydrolyze RS. Regarding the environmental impact, carbon footprint was 5.3 kg CO2-eq/kg EL, mainly ascribed to the use of steam derived from fossil fuels even with the CO2 capture from the paddy rice culture. Alternative scenario for reducing the overall environmental impacts was assessed. For this purpose, both low pressure steam (LPS) and medium pressure steam (MPS) generation from solid hydrolyzed residue was implemented as well as an increase in paddy rice yield from 4.97 to 5.7 ton/ha. Steam generation reduce carbon footprint by 11 % since steam from fossil fuels is avoided, as well as a reduction of 8 % in photochemical ozone formation, 9.7 % in acidification, and 12.5 % in ozone depletion. Furthermore, a comparison among RS combustion and diesel-EL blends combustion were performed to determine the environmental feasibility on the use of EL for energy purposes.es_CO
dc.formatapplication/pdfes_CO
dc.language.isospaes_CO
dc.publisherUniversidad de La Sabanaes_CO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleLife cycle assessment of the catalytic production of ethyl levulinate derived from Colombian residual lignocellulosic biomassses_CO
dc.typemaster thesises_CO
dc.type.hasVersionpublishedVersiones_CO
dc.rights.accessRightsrestrictedAccesses_CO
dc.subject.armarcBiomasa
dc.subject.armarcBiomasa lignocelulósica
dc.subject.armarcDesarrollo social
dc.subject.armarcEtileno
dc.subject.armarcAgricultura
thesis.degree.disciplineFacultad de Ingenieríaes_CO
thesis.degree.levelMaestría en Diseño y Gestión de Procesoses_CO
thesis.degree.nameMagíster en Diseño y Gestión de Procesoses_CO


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivatives 4.0 InternacionalExcept where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional