RT info:eu-repo/semantics/article
T1 Energy recovery from two-stage SWRO plant using PRO without external freshwater feed stream: theoretical analysis.
A1 Toauti, Khaled
A1 Salamanca Parra, Jacobo Manuel
A1 Hamza, Elfil
A1 Tadeo Rico, Fernando Juan
K1 Pressure retarded osmosis
K1 Seawater reverse osmosis
K1 Desalination
K1 Energy Recovery
K1 Energy Efficiency
K1 Desalination
AB Research into pressure retarded osmosis (PRO) as a method to extract energy from salinity gradients is on the rise. Seawater Reverse Osmosis (SWRO) is now a leading technology in the desalination industry worldwide, in both small and large scale applications, due to the remarkable improvements in membrane performance and associated energy efficiency. Nonetheless, SWRO desalination is inherently more energy intensive when compared to conventional fresh water treatment. The integration of PRO with SWRO systems is studied in terms of energy consumption and effluent changes. For this, two novel integration designs are evaluated, with SWRO-PRO specific energy consumption being modeled using SWRO conditions at the thermodynamic restriction, and a developed PRO model. The results show lower SWRO energy consumption for both configurations, with a reduction in consumption of 12% to 18%, depending on the RO recovery ratios. Lastly, the effect of the initial flow ratio on the dilution factor has been studied. To do so, the dilution was modeled and studied for different operating conditions. It was found that detrimental effects severely reduce the dilution, especially the internal concentration polarization, which induces a decrease of energy recovery when using the PRO process.
PB Elsevier
SN 0960-1481
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/28867
UL http://uvadoc.uva.es/handle/10324/28867
LA eng
NO Renewable Energy, Volume 105, 2017, Pages 84-95,
NO Producción Científica
DS UVaDOC
RD 23-nov-2024