A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants

The implementation of the anaerobic digestion technology as a method for reducing the amount of solid waste sent to landfill has been a success with more than 25,000 plants in operation in the world. One of the main factors that has driven this worldwide implementation is the associated production o...

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Autor: Pérez Martínez, Victor
Tipo de recurso: tesis doctoral
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad de Valladolid
Repositorio:UVaDOC. Repositorio Documental de la Universidad de Valladolid
OAI Identifier:oai:uvadoc.uva.es:10324/60629
Acceso en línea:https://doi.org/10.35376/10324/60629
https://uvadoc.uva.es/handle/10324/60629
Access Level:acceso abierto
Palabra clave:Medio Ambiente
Biogas
Biogás
Economic analysis
Análisis económico
Methanotrophs
Metanótrofos
Bioproducts
Bioproductos
3308 Ingeniería y Tecnología del Medio Ambiente
id ES_ff3d91c46bd6801aae478f76bd354e74
oai_identifier_str oai:uvadoc.uva.es:10324/60629
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
title A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
spellingShingle A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
Pérez Martínez, Victor
Medio Ambiente
Biogas
Biogás
Economic analysis
Análisis económico
Methanotrophs
Metanótrofos
Bioproducts
Bioproductos
3308 Ingeniería y Tecnología del Medio Ambiente
title_short A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
title_full A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
title_fullStr A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
title_full_unstemmed A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
title_sort A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plants
dc.creator.none.fl_str_mv Pérez Martínez, Victor
author Pérez Martínez, Victor
author_facet Pérez Martínez, Victor
author_role author
dc.contributor.none.fl_str_mv Muñoz Torre, Raúl
Lebrero Fernández, Raquel
Universidad de Valladolid. Escuela de Doctorado
dc.subject.none.fl_str_mv Medio Ambiente
Biogas
Biogás
Economic analysis
Análisis económico
Methanotrophs
Metanótrofos
Bioproducts
Bioproductos
3308 Ingeniería y Tecnología del Medio Ambiente
topic Medio Ambiente
Biogas
Biogás
Economic analysis
Análisis económico
Methanotrophs
Metanótrofos
Bioproducts
Bioproductos
3308 Ingeniería y Tecnología del Medio Ambiente
description The implementation of the anaerobic digestion technology as a method for reducing the amount of solid waste sent to landfill has been a success with more than 25,000 plants in operation in the world. One of the main factors that has driven this worldwide implementation is the associated production of biogas, further valorized as an energy vector in heat and power co-generation engines (CHP). However, anaerobic digestion plants face nowadays a major dilemma, due to the higher cost of producing energy from biogas in CHP systems, compared to the rapidly declining cost of competing renewable energies such as wind or solar power. These problems have been aggravated by the lack of policy drivers towards the production of renewable energy from biogas and the reduction of feed-in tariffs and fiscal exemptions during the last decade. In fact, the attention of policy makers has shifted to the production of higher added-value products from waste, in the framework of a cleaner, greener and more circular economy and in line with the growingly restrictive environmental policies. Hence, medium and large-scale biogas production plants must reconsider their economic schemes and find innovative sources of revenue for guaranteeing their present and future economic viability. Therefore, there is a growing motivation for transitioning from linear waste treatment plants, where only bioenergy is produced, to more circular urban biorefineries, where all sort of bioproducts can be commercialized. In this transition to urban biorefineries, a better valorization of biogas plays a major role. Its utilization as a source of raw materials (mainly methane (CH4) and carbon dioxide (CO2)) instead of being merely regarded as an energy vector, has gained attention from both the academia and the industry. In this context, the utilization of methanotrophic bacteria, capable of using CH4-biogas as their only source of carbon and energy, has emerged as an opportunity for increasing the current value of biogas. During the last decade, academics have widely demonstrated at laboratory scale the ability of methanotrophic bacteria for manufacturing bioproducts which are ranked higher up in the waste valorization pyramid such as polihydroxyalkanoates (PHA) (chemicals and materials), single cell protein (feed and food) and ectoine (fine chemicals). However, the future technical and economic sustainability of these processes at large scale as well as their robustness in a global economic context in constant change is still unveiled. It is also of paramount importance to evaluate the current biotechnological limitations in bioproducts manufacturing and the potential reduction of production costs derived from future biotechnological advances, thus defining the roadmap to develop cost-competitive biogas biorefineries. This PhD thesis focused on the development and implementation of a methodology for evaluating the technical, economic and environmental feasibility of the bioconversion of biogas into added-value products using methanotrophic bacteria as an alternative to the current utilization of biogas as energy vector in waste treatment plants. This methodology was also designed to identify the biotechnological bottlenecks of these innovative technologies.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
info:eu-repo/semantics/publishedVersion
format doctoralThesis
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.35376/10324/60629
https://uvadoc.uva.es/handle/10324/60629
url https://doi.org/10.35376/10324/60629
https://uvadoc.uva.es/handle/10324/60629
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname:Universidad de Valladolid
instname_str Universidad de Valladolid
reponame_str UVaDOC. Repositorio Documental de la Universidad de Valladolid
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spelling A techno-economic assessment methodology for the production of polyhydroxyalkanoates and ectoine from biogas in waste treatment plantsPérez Martínez, VictorMedio AmbienteBiogasBiogásEconomic analysisAnálisis económicoMethanotrophsMetanótrofosBioproductsBioproductos3308 Ingeniería y Tecnología del Medio AmbienteThe implementation of the anaerobic digestion technology as a method for reducing the amount of solid waste sent to landfill has been a success with more than 25,000 plants in operation in the world. One of the main factors that has driven this worldwide implementation is the associated production of biogas, further valorized as an energy vector in heat and power co-generation engines (CHP). However, anaerobic digestion plants face nowadays a major dilemma, due to the higher cost of producing energy from biogas in CHP systems, compared to the rapidly declining cost of competing renewable energies such as wind or solar power. These problems have been aggravated by the lack of policy drivers towards the production of renewable energy from biogas and the reduction of feed-in tariffs and fiscal exemptions during the last decade. In fact, the attention of policy makers has shifted to the production of higher added-value products from waste, in the framework of a cleaner, greener and more circular economy and in line with the growingly restrictive environmental policies. Hence, medium and large-scale biogas production plants must reconsider their economic schemes and find innovative sources of revenue for guaranteeing their present and future economic viability. Therefore, there is a growing motivation for transitioning from linear waste treatment plants, where only bioenergy is produced, to more circular urban biorefineries, where all sort of bioproducts can be commercialized. In this transition to urban biorefineries, a better valorization of biogas plays a major role. Its utilization as a source of raw materials (mainly methane (CH4) and carbon dioxide (CO2)) instead of being merely regarded as an energy vector, has gained attention from both the academia and the industry. In this context, the utilization of methanotrophic bacteria, capable of using CH4-biogas as their only source of carbon and energy, has emerged as an opportunity for increasing the current value of biogas. During the last decade, academics have widely demonstrated at laboratory scale the ability of methanotrophic bacteria for manufacturing bioproducts which are ranked higher up in the waste valorization pyramid such as polihydroxyalkanoates (PHA) (chemicals and materials), single cell protein (feed and food) and ectoine (fine chemicals). However, the future technical and economic sustainability of these processes at large scale as well as their robustness in a global economic context in constant change is still unveiled. It is also of paramount importance to evaluate the current biotechnological limitations in bioproducts manufacturing and the potential reduction of production costs derived from future biotechnological advances, thus defining the roadmap to develop cost-competitive biogas biorefineries. This PhD thesis focused on the development and implementation of a methodology for evaluating the technical, economic and environmental feasibility of the bioconversion of biogas into added-value products using methanotrophic bacteria as an alternative to the current utilization of biogas as energy vector in waste treatment plants. This methodology was also designed to identify the biotechnological bottlenecks of these innovative technologies.La implementación de la tecnología de digestión anaerobia como método para reducir la cantidad de residuos sólidos orgánicos enviados a vertedero ha sido un éxito, con más de 25,000 plantas operadas en todo el mundo en la actualidad. La obtención de biogás en el proceso de digestión anaerobia y su valorización como vector energético en motores de co-generación de electricidad y calor (CHP) ha impulsado en gran parte esta implementación a nivel global. Sin embargo, las plantas de digestión anaerobia se enfrentan a día de hoy a un gran dilema, ya que la producción energética a partir de biogás en sistemas CHP presenta unos elevados costes de producción, comparados con los costes de producción decrecientes de otras energías renovables como la solar y la eólica. Este problema se ha visto agravado por la falta de incentivos públicos a la producción de energía renovable a partir de biogás, cuyas rebajas fiscales y bonus a la producción se han reducido considerablemente durante la última década. De hecho, la atención de los actores políticos ha virado hacia la producción de productos de mayor valor añadido a partir de los residuos, en el marco de una economía más limpia, verde y circular, alineándose con unas políticas medioambientales cada vez más restrictivas. Por lo tanto, las plantas de producción de biogás de mediano y gran tamaño deben de reconsiderar sus esquemas económicos y encontrar fuentes de ingresos innovadoras que garanticen su viabilidad económica presente y futura. Como consecuencia, hay una creciente motivación para llevar a cabo la transición desde plantas de tratamiento de residuos lineales donde sólo se produce bioenergía hacia biorrefinerías urbanas mucho más circulares donde toda clase de bioproductos puedan ser ofrecidos al mercado. En esta transición hacia las biorrefinerías urbanas de última generación, una mejor valorización del biogás jugaría un papel principal. De hecho, la utilización de biogás como fuente de materias primas (principalmente metano (CH4) y dióxido de carbono (CO2)) frente a su uso como mero vector energético está atrayendo la atención de la academia y de la industria. En este contexto, la utilización de bacterias metanótrofas, capaces de utilizar el CH4 contenido en el biogás como única fuente de carbono y energía, ha surgido como una oportunidad para incrementar el valor actual del biogás. Durante la última década, los académicos han demostrado a escala de laboratorio la habilidad de las bacterias metanótrofas para producir bioproductos que se encuentran mucho más arriba en la pirámide de valorización de los residuos, como los polihidroxialcanoatos (PHA) (reactivos químicos y materiales), proteína unicelular (alimentación humana y animal) y ectoína (productos de química fina). Sin embargo, la futura sostenibilidad técnica, económica y medioambiental de estos procesos a gran escala, así como su robustez en un contexto económico global cambiante, son todavía una incógnita. Es también de una enorme importancia evaluar las limitaciones biotecnológicas actuales para la comercialización de estos bioproductos y la potencial reducción de costes derivada de futuros avances biotecnológicos para definir la hoja de ruta hacia biorrefinerías de biogás competitivas económicamente. Esta tesis doctoral se ha enfocado en el desarrollo e implementación de una metodología para evaluar la viablidad técnica y económica de los procesos de bioconversión de biogás en productos de valor añadido utilizando bacterias metanótrofas como alternativa a la utilización actual del biogás como vector energético en plantas de tratamiento. Esta metodología ha sido diseñada también para ser capaz de identificar y cuantificar los cuellos de botella biotecnológicos de estas tecnologías innovadoras.Escuela de DoctoradoDoctorado en Ingeniería Química y AmbientalMuñoz Torre, RaúlLebrero Fernández, RaquelUniversidad de Valladolid. Escuela de Doctorado2023info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.35376/10324/60629https://uvadoc.uva.es/handle/10324/60629reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolidinstname:Universidad de ValladolidInglésinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:uvadoc.uva.es:10324/606292026-06-13T12:44:47Z
score 15,300719

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