Optimum green energy solution to address the remote islands’ water-energy nexus: the case study of Nisyros island

Triantafyllou, Panagiotis; Koroneos, C.; Kondili, E.; Kollas, Panagiotis; Zafirakis, D.; Ktenidis, Panagiotis; Kaldellis, J.K.

doi:10.1016/j.heliyon.2021.e07838

Cited by 12 publications

(6 citation statements)

References 29 publications

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“…The results obtained for the 2050 scenarios show the need to increase the renewable energies' mix in the islands, to reduce the energy dependence. These results are in concordance with the reported results for a Greek island, Nisyros, where new photovoltaic power plants have been evaluated for energy production [57]. Compared to studies performed in continental territories, where the increase in energy demand for the 2050 scenarios is in the range of 7.8-9% [18], the scenarios proposed in this work show an increase of 2.5% for the maintained trend scenario and a reduction of 12.5% for the ecology-aware scenario.…”

Section: Discussionsupporting

confidence: 92%

Analysis of the Water-Energy Nexus Applied to an Insular System: Case Study of Tenerife

et al. 2022

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Insular territories face important challenges in achieving effective sustainable development, mainly due to low internal availability of basic resources, which results in a high external dependency. The analysis of the energy–water nexus of islands is a powerful instrument to evaluate the sustainable goals of the region and to identify the key actions to take to fulfill these objectives in future scenarios. The aim of this study is to review the energy–water nexus applied to Tenerife (Canary Islands), considering three scenarios: the base case scenario, corresponding to the current situation, where 1.1% of consumed water is dedicated to energy production and 10.2% of the energy is supplied for water abstraction, depuration, and ocean discharge; and two projections for the year 2050: a maintained trend scenario, and an ecology-aware scenario, where the population growth and the deployment of electrical vehicles are considered. In 2018, the total energy consumed was 1954 ktoe, of which renewable energy made up 2%. In the maintained trend scenario, this amount rises to 2003 ktoe, of which renewable energies represent 29%. However, in the ecology-aware scenario, this amount could be reduced to 1710 ktoe of which 51% of energy is obtained from renewable sources.

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Section: Discussionsupporting

confidence: 92%

Analysis of the Water-Energy Nexus Applied to an Insular System: Case Study of Tenerife

et al. 2022

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“…Access to fresh water is a growing problem in many areas of the world, due partly to climate change and partly to other factors such as a rising population [1]. In this context, some research studies have focused on analyzing the influence of climate change on the scarcity of fresh water in traditionally desert-like regions, while others have considered the potential impact on other traditionally freshwater-abundant regions [2,3]. With desalination becoming an increasingly popular option to ensure the supply of fresh water, some studies have looked at the contribution to climate change made by the fossil fuel-based powering of the technologies used to desalt the water [4].…”

Section: Introductionmentioning

confidence: 99%

Wind-Powered Desalination on Islands: A Review of Energy–Water Pathways

Matos,

Cabrera,

Carta

et al. 2024

JMSE

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Water scarcity is a global problem that particularly affects islands located in arid regions or regions with limited water resources. This issue has prompted the development of non-conventional water sources such as fossil fuel-powered desalination systems. Concern about the high energy and environmental costs associated with this type of facility has created the ideal framework for the proliferation of desalination projects powered by renewable energies, especially wind energy due to the multiple advantages it offers. This article provides a bibliometric analysis to identify the advances made in wind-powered desalination on islands. While many studies explore wind-powered desalination, none compile references specific to islands. This paper analyses islands’ desalination needs and showcases wind-powered systems, exploring their types and uses. Firstly, the most relevant international scientific journals are identified to allow the subsequent selection and quantitative and qualitative analysis of articles directly dealing with wind-powered desalination systems. A total of 2344 articles obtained from the Scopus database were analyzed, of which 144 including 181 case studies were selected. Among the results of this study, an increasing year-on-year trend is observed in the number of published studies tackling wind-powered desalination. Finally, this paper presents a series of maps showing the most relevant facilities, projects, and data in this field, and provides an overview of the lessons learned in the decarbonization of desalination.

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“…Renewable energy sources such as solar, wind, hydropower, and geothermal can provide reliable and afordable energy for various purposes such as electricity generation, heating, cooling, and transportation [2,8]. By ensuring access to clean and afordable energy, renewable sources can meet the basic energy needs of communities, especially in remote or underdeveloped areas [10]. Te use of renewable energy sources can signifcantly reduce environmental problems associated with energy consumption [11].…”

Section: Introductionmentioning

confidence: 99%

“…Te use of renewable energy sources can signifcantly reduce environmental problems associated with energy consumption [11]. Fossil fuel combustion releases pollutants into the air, contributing to air pollution, smog formation, and adverse health efects [10]. Renewable energy technologies produce minimal or no emissions during operation, mitigating air pollution and its associated risks [12].…”

Section: Introductionmentioning

confidence: 99%

Biogas Production through Anaerobic Codigestion of Distillery Wastewater Sludge and Disposable Spent Yeast

Duguma,

Bekele,

Geda

2024

International Journal of Chemical Engineering

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The ongoing industrial transformation in developing countries, including Ethiopia, has resulted in a significant increase in harmful pollutants in the environment. Various industrial activities release toxic wastewater sludge and spent yeast into the surrounding ecosystem, posing risks to public health and the environment. However, these waste materials have the potential for energy extraction and recycling. This study aimed to investigate and harness the biogas potential through anaerobic codigestion of distillery wastewater sludge and waste yeast. The researchers employed a response surface approach utilizing Box–Behnken experimental designs (BBD) to assess the three key experimental parameters influencing biogas yield: pH levels (6, 7, and 8), volume ratio (85, 92, and 99%), and temperature (33, 36.5, and 40°C). Before and after the digestion process, the researchers measured the total solids (TS), biological oxygen demand (BOD5), chemical oxygen demand (COD), and pH of all substrates. Additionally, measurements of temperature, total nitrate, and total phosphate were taken before digestion. The methane yield was modeled using a second-order polynomial through the BBD method in Design Expert software, with a p value threshold of ≤5%. The results showed that the maximum methane yield of 61.18% was achieved at a pH of 7, a temperature of 36.5°C, and a volume ratio of 92%. Conversely, the lowest methane yield of 40.13% was obtained at a pH of 6, a temperature of 33°C, and a volume ratio of 92%. The linear and quadratic values of the model (A, B, C, A2, B2, and C2) were determined to be significant terms, with p values ≤5%. Overall, the biogas yields obtained from the anaerobic codigestion of distillery wastewater and waste yeast were promising. This process has the potential to effectively remove BOD5, COD, and TS from distillery spent wash and sludge. The findings suggest that anaerobic codigestion could be a viable approach for both energy production and waste management in the setting of distillery waste.

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Optimum green energy solution to address the remote islands’ water-energy nexus: the case study of Nisyros island

Cited by 12 publications

References 29 publications

Analysis of the Water-Energy Nexus Applied to an Insular System: Case Study of Tenerife

Analysis of the Water-Energy Nexus Applied to an Insular System: Case Study of Tenerife

Wind-Powered Desalination on Islands: A Review of Energy–Water Pathways

Biogas Production through Anaerobic Codigestion of Distillery Wastewater Sludge and Disposable Spent Yeast

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