TY - JOUR
T1 - Facultative hybrid RO-PRO concept to improve economic performance of PRO: Feasibility and maximizing efficiency
AU - Blankert, Bastiaan
AU - Kim, Youngjin
AU - Vrouwenvelder, Johannes S.
AU - Ghaffour, NorEddine
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2019/12/24
Y1 - 2019/12/24
N2 - A facultative hybrid reverse osmosis (RO) – pressure retarded osmosis (PRO) system can switch its operation between i) RO mode, where high quality water is produced from waste-water treatment plant effluent and ii) PRO mode, where the salinity difference between seawater desalination brine and wastewater is converted to energy. This system takes advantage of fluctuating energy pricing, by consuming low cost energy to produce water and producing high value energy. The system was modeled by a local concentration polarization and solution diffusion model, considering several geometries. The system was optimized and for different ratios of the economic value of electricity vs water, to find process settings and switch points. A necessary condition for the feasibility of the facultative hybrid RO-PRO concept is that the permeate value satisfies: i) low enough, to justify electricity production and ii) high enough, to justify water production. With a maximum energy price of 0.25 USD/kWh, the first condition translates into
AB - A facultative hybrid reverse osmosis (RO) – pressure retarded osmosis (PRO) system can switch its operation between i) RO mode, where high quality water is produced from waste-water treatment plant effluent and ii) PRO mode, where the salinity difference between seawater desalination brine and wastewater is converted to energy. This system takes advantage of fluctuating energy pricing, by consuming low cost energy to produce water and producing high value energy. The system was modeled by a local concentration polarization and solution diffusion model, considering several geometries. The system was optimized and for different ratios of the economic value of electricity vs water, to find process settings and switch points. A necessary condition for the feasibility of the facultative hybrid RO-PRO concept is that the permeate value satisfies: i) low enough, to justify electricity production and ii) high enough, to justify water production. With a maximum energy price of 0.25 USD/kWh, the first condition translates into
UR - http://hdl.handle.net/10754/660915
UR - https://linkinghub.elsevier.com/retrieve/pii/S0011916419318831
UR - http://www.scopus.com/inward/record.url?scp=85076852660&partnerID=8YFLogxK
U2 - 10.1016/j.desal.2019.114268
DO - 10.1016/j.desal.2019.114268
M3 - Article
SN - 0011-9164
VL - 478
SP - 114268
JO - Desalination
JF - Desalination
ER -