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- Ortega et al.
In order to implement osmotic power as a renewable energy source it is necessary to take into account the site-specific characteristics of any river mouth location where a project is proposed. This includes the salinity structure, inter- and intra-annual flow variations, ecological and social restrictions of the flow extraction, among others. Using the case of a location with suitable…
- Salamanca et al.
The Magdalena River mouth in Colombia is studied as a candidate site for a renewable power plant via osmotic energy technology, using pressure retarded osmosis. This power generation plant would operate through the controlled mix of two flows with different salinities (river water and seawater in this case study). A preliminary design of a pressure retarded osmosis power plant is proposed here…
- Ashly and Fernandes
Discharge from the desalination plants of Kuwait returns brines of high salinity to the Gulf that contain other contaminants, such as chlorine or chromium, impacting the environment of the coastal region. Conversely, wastewater discharges to the Gulf have low salinity but may drive eutrophication of coastal waters. Pressure retarded osmosis (PRO) is a promising source of renewable energy and…
- Stancanelli et al.
The feasibility of a small scale Pressure Retarded Osmosis (PRO) plant located along the eastern coast of Sicily (Italy) is assessed by considering fresh water intake from a river and salt water intake from the sea. Firstly, PRO design methods are applied in order to estimate potential power production in terms of both the availability of water resources and of local salinity gradients.…
- Karunarathne and Walpalage
In this study the applicability of pressure retarded osmosis power generation was investigated in order to fulfil current electricity demand in Sir Lanka. Pressure retarded osmosis (PRO) process is a renewable and green technology with zero carbon emission to the environment. Salinity gradient through a membrane is the key parameter in osmotic pressure development. Theoretically it is a…
- Alvarez-Silva et al.
Salinity gradient energy (SGE) is a clean and renewable energy source that can be harnessed from the controlled mixing of two water masses of different salt concentration. Various natural and artificial systems offer conditions under which SGE can be harnessed amongst which river mouths play the prominent role in a global assessment. The theoretical SGE potential at river mouths has been…
- Roldan-Carvajal et al.
This paper evaluates the implementation of salinity gradient power (SGP) based on reverse electrodialysis (RED) in the Caribbean region of Colombia, specifically at the Magdalena River mouth (MRM). Our multidisciplinary approach comprises technical, technological, and technology diffusion assessments (market analysis). We estimate the theoretical energy potential in the MRM from spatial and…
- Esteban et al.
Renewable energies play a fundamental role within the current political and social framework for minimizing the impacts of climate change. The ocean has a vast potential for generating energy and therefore, the marine renewable energies are included in the Sustainable Development Goals (SDGs). These energies include wave, tidal, marine currents, ocean thermal, and osmotic. Moreover, it can…
- Leijon et al.
Some countries are facing issues on freshwater and electricity production, which can be addressed with the use of renewable energy powered desalination systems. In the following study, a reverse osmosis desalination plant powered by marine current energy converters is suggested. The marine current energy converters are designed at Uppsala University in Sweden, specifically for utilizing low…
- Hernández-Fontes et al.
The Atlantic and Pacific coasts of Mexico offer a variety of marine energy sources for exploitation. Although the Mexican government has made important efforts to reduce its dependence on fossil fuels, national participation in clean energies is still limited in terms of electricity production. This paper presents a practical theoretical assessment of marine energy sources around Mexico, with…
- Maisonneuve et al.
Diesel-generated electricity is currently used to supply electricity to community micro-grids in remote regions of Quebec. Given its high cost and environmental impact there is interest in developing renewable energy alternatives for such applications. The potential of pressure retarded osmotic (PRO) power to supply remote community loads is investigated here. A mathematical model for PRO…
- García-Santiago et al.
While the need to make use of clean, renewable energies in electricity generation is universally understood, Mexico is lagging behind other countries in terms of the contribution these sources have in the production of energy nationally. The first hurdle to overcome is that of providing accurate information for decision makers and potential investors. In the case of renewable marine energy…
- Reyes-Mendoza et al.
Natural and artificial systems containing water resources that have different salinities can be used to generate salinity-gradient energy (SGE). In this paper, the feasibility of implementing SGE in hypersaline coastal lagoons is addressed, taking the coastal lagoon La Carbonera in Yucatan, Mexico, as an exemplary case. A realistic approach to the exploitation conditions and potential that…
- Salamanca et al.
The gain in net power produced by Salinity Gradient plants in river mouths due to the optimal location of water intakes is analysed in this paper. More precisely, this work focuses on stratified river mouths and the membrane-based technology of Pressure-Retarded Osmosis. A methodology for this analysis is proposed and then applied to a case study in Colombia. Temperature, salinity and water…
- Daborn et al.
There should be little doubt that the world needs to diminish its dependence upon fossil fuels for electricity generation. Marine renewable energy (MRE), in the forms of offshore wind, tidal, wave, or ocean thermal energy, remains the largest under-exploited energy source, with the potential to supply more than the total electricity demand in the world. It is estimated that the global wave…
- Wang et al.
Facing great pressure of economic growth and energy crisis, China pays much attention to the renewable energy. An overview of policy and legislation of renewable energy as well as status of development of renewable energy in China was given in this article. By analysis, the authors believe that ocean energy is a necessary addition to existent renewable energy to meet the energy demand of the…
- Emdadi et al.
Salinity gradient energy potential at the hyper saline Urmia Lake – ZarrinehRud River system in Iran
Salinity gradienthas globally high potential for electric energy production, especially where low salinity rivers discharge into hyper-saline lakes. Lake Urmia is world's second hyper-saline lake, with a number of low salinity rivers discharging into the lake, the most significant of which is ZarrinehRud River. Based onthermodynamic calculationsand on field data, the theoretical potential…
- Alvarez-Silva and Osorio
The theoretical potential ofsalinity gradientenergy in river mouth systems is the maximum amount of energy that can be extracted from the controlled mixing ofriver waterand seawater. It is calculated using theGibbs free energyof mixing equations considering as inputs the mean rivers' discharge and thelong termsalinity of the ocean basin. However, this theoretical amount of energy can be…
- Alvarez-Silva et al.
River mouths are potentially abundant locations for the exploitation of the clean and renewable salinity gradient energy (SGE) as here perpetually fresh water mixes with saline seawater. However, the practical yield of SGE depends on the spatiotemporal variability of the salinity structure. Here we show this relationship for exemplary river mouths. Depending on characteristics of the salinity…
- Fouz et al.
Hydrokinetic energy can contribute to diversify and decarbonise the energy mix in many coastal regions, in particular estuaries. These are typically areas of high environmental value and with intense socioeconomic activity. The aim of this work is to provide a comprehensive methodology for selecting the optimum locations for hydrokinetic energy exploitation, by considering all the relevant…
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