title: Theoretical and experimental investigations of the potential of osmotic energy for power production.
abstract: This paper presents a study on the potential of osmotic energy for power production. The study includes both pilot plant testing and theoretical modelling as well as cost estimation. A projected cost of £30/MWh of clean electricity could be achieved by using a Hydro-Osmotic Power (HOP) plant if a suitable membrane is used and the osmotic potential difference between the two solutions is greater than 25 bar; a condition that can be readily found in many sites around the world. Results have shown that the membrane system accounts for 50%-80% of the HOP plant cost depending on the salinity difference level. Thus, further development in membrane technology and identifying suitable membranes would have a significant impact on the feasibility of the process and the route to market. As the membrane permeability determines the HOP process feasibility, this paper also describes the effect of the interaction between the fluid and the membrane on the system permeability. It has been shown that both the fluid physical properties as well as the membrane micro-structural parameters need to be considered if further development of the HOP process is to be achieved.
authors.affiliation: Centre for Osmosis Research and Applications, Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK. asharif@qf.org.qa.
authors.forename: Adel O
authors.initials: AO
authors.lastname: Sharif
authors.affiliation: Centre for Osmosis Research and Applications, Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK. alimerdaw@yahoo.com.
authors.forename: Ali A
authors.initials: AA
authors.lastname: Merdaw
authors.affiliation: Centre for Osmosis Research and Applications, Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK. m.aryafar@surrey.ac.uk.
authors.forename: Maryam
authors.initials: M
authors.lastname: Aryafar
authors.affiliation: Modern Water plc, Guildford GU3 1LR, UK. peter.nicoll@modernwater.co.uk.
authors.forename: Peter
authors.initials: P
authors.lastname: Nicoll
references.citation: Environ Sci Technol. 2012 May 1;46(9):5230-9
references.pmid: 22463483
references.citation: Nature. 2012 Aug 16;488(7411):313-9
references.pmid: 22895336