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Using Agricultural Residues to Support Sustainable Development: a Case Study of Coffee Stems Gasification to Supply Energy Demands in Rural Areas of Colombia.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Using Agricultural Residues to Support Sustainable Development: a Case Study of Coffee Stems Gasification to Supply Energy Demands in Rural Areas of Colombia./
Author:	Garcia Freites, Samira.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	248 p.
Notes:	Source: Dissertations Abstracts International, Volume: 83-02, Section: B.
Contained By:	Dissertations Abstracts International83-02B.
Subject:	Biodiesel fuels. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28526297
ISBN:	9798515258559

Using Agricultural Residues to Support Sustainable Development: a Case Study of Coffee Stems Gasification to Supply Energy Demands in Rural Areas of Colombia.
Garcia Freites, Samira.

Using Agricultural Residues to Support Sustainable Development: a Case Study of Coffee Stems Gasification to Supply Energy Demands in Rural Areas of Colombia. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 248 p.

Source: Dissertations Abstracts International, Volume: 83-02, Section: B.

Thesis (Ph.D.)--The University of Manchester (United Kingdom), 2019.

This item must not be sold to any third party vendors.

The development of sustainable bioenergy plays an active role in the decarbonisation of the energysector. Unlike other renewables, bioenergy has the potential to expand its applications beyond climatechange mitigation by providing complementary environmental and socio-economic benefits that supportthe Sustainable Development Goals. The deployment of bioenergy could be particularly beneficial inthe rural areas of many low and middle-income countries where traditional uses of biomass still prevail. Locally available biomass in rural areas, such as agricultural residues, could be harnessed in moreefficient and sustainable manners, and this could be promoted with bioenergy development. The rollout of these technologies also arises challenges across the environmental, economic and socialdimensions, especially for emergent technologies. Tackling these challenges requires a widerunderstanding of bioenergy technologies' impacts across these dimensions, and this could be achievedthrough comprehensive and integrated assessments that investigate these dimensions. This research,therefore, seeks to gain further knowledge to unfold the following questions; how bioenergytechnologies using agri-residues could be sustainably and feasibly deployed?, and what are the widerco-benefits, from a sustainable development perspective to rural communities and agro-industries?.This study aimed to evaluate the feasibility of small-scale gasification systems to generate power and heat, using indigenous agricultural residues, to meet the energy demand of rural areas. Considering also that bioenergy is set within local contexts, this research was framed in a case study on the coffee sector in Colombia, using coffee stems as feedstock. The methodology in this research consisted of a combination of multi disciplinary approaches, comprising process modelling for a technical assessment ,lifecycle assessment (LCA) and techno-economic analysis.The results of the technical assessment indicate that the gasification of coffee stems could generate afuel gas suitable for power generation in engines. In addition, the heat recovery and integration to supplythe demand for coffee processing could enhance the conversion efficiency of the system. The LCAresults show that deploying the coffee stems gasification-CHP system could impact positively on manyenvironmental issues, including climate change, when traditional biomass uses and energy productionusing fossil fuels are replaced. However, trade-offs should be considered for certain scenarios, such asthose replacing grid electricity with high-hydropower generationThe evaluation of the economic feasibility indicates that costs of power generation in the gasification systems could equalise the costs of Diesel-power generation when the system reaches high capacityfactors. Matching the grid-electricity tariffs is more difficult to attain even at high capacity factors. Theintegration of the heat vector in the coffee processing chain contributes to fuel savings and could betranslated into a heat credit that reduces the power generation costs.The key findings from this research were integrated under a multidimensional framework that prompted discussions on pivotal drivers, synergies and trade-offs of this bioenergy system. The synergies relate to the importance of balancing the biomass availability and the energy demand in context-specific agricultural sectors. It also emphasises the usefulness of harnessing the biomass conversion by implementing heat recovery pathways in the system, and of maximising the utilisation of the system(increasing the capacity factor) to enhance the system's feasibility.The framework also contributes to understanding how bioenergy from agricultural residues couldcontribute achieving the Sustainable Development Goals. The multidimensional framework highlightspotential co-benefits to rural communities, in relation to improving energy access and health, promotingsustainable agriculture and economic growth, and reducing inequalities in rural areas.In conclusion, this research supports the overarching argument that bioenergy technologies have thepotential to deliver energy demands in rural areas while tapping the potential of agricultural residues.Overcoming barriers to these systems deployment is still challenging. Yet, the synergies identifiedacross all the dimensions could help to attain the system's feasibility and sustainability. Further more,wider societal co-benefits to rural communities could also be realised, as suggests the strong correlationbetween bioenergy and the Sustainable Development Goals.

ISBN: 9798515258559Subjects--Topical Terms:

587935
Biodiesel fuels.

Using Agricultural Residues to Support Sustainable Development: a Case Study of Coffee Stems Gasification to Supply Energy Demands in Rural Areas of Colombia.
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