Search results for "Pressure-retarded osmosis"

showing 4 items of 4 documents

Modelling the Reverse ElectroDialysis process with seawater and concentrated brines

2012

Technologies for the exploitation of renewable energies have been dramatically increasing in number, complexity and type of source adopted. Among the others, the use of saline gradient power is one of the latest emerging possibilities, related to the use of the osmotic/chemical potential energy of concentrated saline solutions. Nowadays, the fate of this renewable energy source is intrinsically linked to the development of the pressure retarded osmosis and reverse electrodialysis technologies. In the latter, the different concentrations of two saline solutions is used as a driving force for the direct production of electricity within a stack very similar to the conventional electrodialysis …

Chemical potentialSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/25 - Impianti Chimici020209 energyOcean Engineering02 engineering and technology7. Clean energyModellingSaline gradient powerSaline gradient power; Reverse electrodialysis; Modelling; Multi-scale; gPROMSStack (abstract data type)Reversed electrodialysisReverse electrodialysi0202 electrical engineering electronic engineering information engineeringOsmotic powergPROMSMulti-scaleWater Science and Technologybusiness.industryChemistryPressure-retarded osmosisEnvironmental engineeringElectrodialysis021001 nanoscience & nanotechnologyPollution6. Clean waterRenewable energySeawater0210 nano-technologybusinessDesalination and Water Treatment
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Optimization of Osmotic Desalination Plants for Water Supply Networks

2016

Water scarcity and the poor quality of water resources are leading to a wider diffusion of desalination plants using the Reverse Osmosis (RO) process. Unfortunately, the cost of a cubic meter of fresh water produced by an RO plants is still high and many efforts are in progress to increase the efficiency of the membranes used in osmotic plants and to limit the energy required by the process. A further reduction of the energy cost could be obtained by an optimal operation of the desalination plant so reducing the hourly energy cost, or by coupling the RO plant with an energy production plant based on direct osmosis (Pressure Retarded Osmosis PRO). The economic viability of the desalination p…

EngineeringEnergy recoveryWaste managementbusiness.industryDesalination020209 energyPressure-retarded osmosisEnvironmental engineeringWater supplyOsmosiDesalination; Osmosis; PAT; Water supply network; Water Science and Technology; Civil and Structural Engineering02 engineering and technologyGeothermal desalinationDesalinationReverse osmosis plantSettore ICAR/01 - Idraulica0202 electrical engineering electronic engineering information engineeringWater supply networkbusinessReverse osmosisPATWater supply networkWater Science and TechnologyCivil and Structural Engineering
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Characterization of pressure retarded osmosis lab-scale systems

2016

Power generation from salinity gradient is a viable alternative to produce energy from renewable sources. Pressure Retarded Osmosis (PRO) is one of the technologies proposed so far for the exploitation of such energy source. In the present preliminary work, two different geometry modules were tested under atmospheric pressure (i.e. forward osmosis or depressurized-PRO conditions). The first one is a conventional planar geometry cell. The second is a customized cylindrical membrane module, able to mechanically support the osmotic membrane along with the spacers. The latter, thanks to its design, allows membranes and spacers to be easily changed for testing purposes. A novel simplified proced…

PROEngineeringSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciBrineSettore ING-IND/25 - Impianti ChimiciForward osmosisMechanical engineeringOcean Engineering02 engineering and technology010501 environmental sciencesOsmosis01 natural sciencesOsmotic powerSalinity gradient powerBrine; Energy recovery; Forward osmosis; PRO; Salinity gradient power; Water Science and Technology; Ocean Engineering; Pollution0105 earth and related environmental sciencesWater Science and TechnologyEnergy recoverySettore ING-IND/24 - Principi Di Ingegneria ChimicaAtmospheric pressurebusiness.industryPressure-retarded osmosis021001 nanoscience & nanotechnologyForward osmosiPollutionEnergy recoveryMembrane0210 nano-technologybusinessEnergy source
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Modelling and optimization of modular system for power generation from a salinity gradient

2019

Abstract Pressure retarded osmosis has been proposed for power generation from a salinity gradient resource. The process has been promoted as a promising technology for power generation from renewable resources, but most of the experimental work has been done on a laboratory size units. To date, pressure retarded osmosis optimization and operation is based on parametric studies performed on laboratory scale units, which leaves a gap in our understanding of the process behaviour in a full-scale modular system. A computer model has been developed to predict the process performance. Process modelling was performed on a full-scale membrane module and impact of key operating parameters such as h…

Process modeling060102 archaeologyRenewable Energy Sustainability and the Environmentbusiness.industry020209 energyPressure-retarded osmosisProcess (computing)06 humanities and the arts02 engineering and technologyOsmosisRenewable energyMembrane technologyElectricity generation0202 electrical engineering electronic engineering information engineeringEnvironmental science0601 history and archaeologyProcess optimizationbusinessProcess engineeringRenewable Energy
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