Lights and shadows of the environmental impacts of fossil-based electricity generation technologies: A contribution based on the Ecuadorian experience

Ramírez, Angel D.; Rivela, Beatriz; Boero, Andrea; Melendres, Ana M.

doi:10.1016/j.enpol.2018.11.005

Cited by 28 publications

(21 citation statements)

References 82 publications

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“…Life cycle inventories for the production of feed ingredients, water, and heat were derived from Ecoinvent databases. Life cycle inventory for electricity production in Ecuador was derived from [46,47]. The pig production system includes swine production, water treatment, wastewater treatment, and solid waste treatment.…”

Section: Feed Productionmentioning

confidence: 99%

Life Cycle Assessment as a Methodological Framework for the Evaluation of the Environmental Sustainability of Pig and Pork Production in Ecuador

Pazmiño

Ramírez

2021

Sustainability

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Pork is one of the proteins of greatest demand worldwide. This study has evaluated the environmental sustainability of pig production by applying the life cycle assessment methodological framework. The system boundaries include feed production, pig production, slaughtering, and slaughterhouse by-product management. Within this context, three scenarios have been proposed: the first related to the management of slaughter by-products in an open dump, the second contemplates a model for using these by-products in a rendering plant, and a third where the environmental burden of slaughterhouse co-products is portioned according to economic allocation. The primary data collected correspond to the period of 2019 for the facilities of a producer in a coastal province of Ecuador. Three functional units were used—“1 kg of pig carcass at the slaughterhouse gate”, “1 kg pig live weigh at the farm gate”, and “1 kg of feed at the plant gate”. The impact categories included were global warming, fossil depletion, marine eutrophication, ozone layer depletion, particulate matter formation, photochemical oxidation formation, and terrestrial acidification. The results revealed that the production of ingredients for feed is the largest contributor to the environmental burden of pig and pork. The rendering of slaughter by-products that avoid the production of other fats and proteins results in a lower environmental impact than the other scenarios in almost all categories.

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Section: Feed Productionmentioning

confidence: 99%

Life Cycle Assessment as a Methodological Framework for the Evaluation of the Environmental Sustainability of Pig and Pork Production in Ecuador

Pazmiño

Ramírez

2021

Sustainability

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“…La construcción de centrales hidroeléctricas ha diversificado la matriz energética y ha satisfecho la creciente demanda de electricidad en el país. Sin embargo, la electricidad basada en combustibles fósiles posee un papel primordial durante las horas pico, así como también en periodos de baja producción hidroeléctrica (Ramírez, Rivela, Boero y Melendres, 2019). Según la Agencia de Regulación y Control de Electricidad (ARCONEL), la potencia nominal alcanzada hasta abril del 2019 en generación de energía eléctrica se divide entre el 58,33% (energía hidráulica) y el 39,16% energía térmica, siendo minoritaria la producción de energía eólica, fotovoltaica, biomasa y biogás (ARCONEL, 2019).…”

Section: Community Participation Design For Photovoltaic Energy Projectsunclassified

Diseño de participación comunitaria para proyectos de energía fotovoltaica

Alvarez

Maks-Davis

Rodríguez

2020

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This study took place in Llano Chico, a peri-urban parish in the Metropolitan District of Quito, in Ecuador. Photovoltaic energy was chosen, given the location of the site on the Equator with optimal solar conditions. The objective was to develop participatory methodology to determine the spatial configuration of a possible photovoltaic project. Community participation was key. Qualitative research methods were based on observation, snowball techniques, semi-structured interviews and a participatory workshop. The results open the doors to the possibility of having community photovoltaic energy for the installation of public lighting in informal residential areas that suffer from security issues. This could fill a void of services, due to public companies not being able to carry out operations in informal urban areas. The academic sector through strategies of community participation can bring about compelling opportunities that foster development.

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“…Generation of electrical energy has been one of the utmost important tasks in human history since the discovery of electrons and electrical bulbs ( Gaurmieri, 2015 , 2018 ). Although the power stations based on fossil and nuclear fuels have mainly contributed to the electrical energy supply, these stations are expected to be continuously minimized and will eventually disappear because of fatal environmental issues and unrecoverable disasters ( Martins et al., 2019 ; Ramirez et al., 2019 ). For alternative big-scale electrical energy generation, renewable energy sources such as solar photovoltaics and wind powers are being globally installed, but there are a lot of keen concerns including inevitable environmental damages and noise issues ( Wilberforce et al., 2019 ; Kasaei et al., 2017 ; Amrouche et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Persistent electrical energy generation from organic diodes under constant pressure: Toward organic gravity nanogenerators

Lee

Kim

2021

iScience

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Summary Here it is demonstrated that electricity can be continuously generated by pressing organic diodes with the poly(3-hexylthiophene) (P3HT) layers which are sandwiched between indium-tin oxide and aluminum (Al) electrodes. The optimized single devices with the 150-nm-thick P3HT layers are able to generate 60 μV and 45 μA by pressing, while persistent voltage (50 μV) and current (45 μA) generations are achieved by continuous pressing for 7 days. The charge generation by pressing of organic diodes is supported by the current density-voltage and capacitance measurements, while the friction of pi-orbital electrons in the P3HT chains upon pressing is proposed for the mechanism of persistent electricity generation. Organic diode modules with 14 sub-cells in series deliver ca. 0.4 V and ca. 20 μW. The present technology is expected to pave the way for next-generation energy conversion devices, organic gravity nanogenerators that enable continuous electricity generation by gravitational forces.

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Lights and shadows of the environmental impacts of fossil-based electricity generation technologies: A contribution based on the Ecuadorian experience

Cited by 28 publications

References 82 publications

Life Cycle Assessment as a Methodological Framework for the Evaluation of the Environmental Sustainability of Pig and Pork Production in Ecuador

Life Cycle Assessment as a Methodological Framework for the Evaluation of the Environmental Sustainability of Pig and Pork Production in Ecuador

Diseño de participación comunitaria para proyectos de energía fotovoltaica

Persistent electrical energy generation from organic diodes under constant pressure: Toward organic gravity nanogenerators

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