Impact of hydrodynamic conditions on optimum power generation in dual stage pressure retarded osmosis using spiral-wound membrane

Nahawand AlZainati; Sudesh Yadav; Ali Altaee; Senthilmurugan Subbiah; Syed Javaid Zaidi; John Zhou; Raed A. Al-Juboori; Yingxue Chen; Mohammad Hasan Shaheed

Energy Nexus (Mar 2022)

Impact of hydrodynamic conditions on optimum power generation in dual stage pressure retarded osmosis using spiral-wound membrane

Nahawand AlZainati,
Sudesh Yadav,
Ali Altaee,
Senthilmurugan Subbiah,
Syed Javaid Zaidi,
John Zhou,
Raed A. Al-Juboori,
Yingxue Chen,
Mohammad Hasan Shaheed

Affiliations

Nahawand AlZainati: Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, NSW, 2007, Australia
Sudesh Yadav: Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, NSW, 2007, Australia
Ali Altaee: Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, NSW, 2007, Australia; Corresponding authors.
Senthilmurugan Subbiah: Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
Syed Javaid Zaidi: Department of Civil and Architectural Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
John Zhou: Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, NSW, 2007, Australia
Raed A. Al-Juboori: Water and Environmental Engineering Research Group, Department of Built Environment, Aalto University, P.O. Box 15200, Aalto, FI-00076 Espoo, Finland; Corresponding authors.
Yingxue Chen: School of Engineering and Materials Science, Queen Mary University of London, London, E1 4NS, UK
Mohammad Hasan Shaheed: School of Engineering and Materials Science, Queen Mary University of London, London, E1 4NS, UK

Journal volume & issue: Vol. 5
p. 100030

Abstract

Read online

The Dual Stage Pressure Retarded Osmosis technique is considered for power generation. The influence of feed flow rates, hydraulic pressure, and pressure drop on mass transfer and solute diffusion in a full-scale membrane model was investigated for the first time to maximize power generation. Dead Sea-seawater, Dead Sea-reverse osmosis brine, reverse osmosis brine-wastewater, and seawater-wastewater salinity gradient resources were investigated for power generation. Results revealed a 71.07% increase in the specific power generation due to the dual-stage pressure retarded osmosis process optimization using Dead Sea-seawater salinity gradient resources. The increase in the specific power generation due to the dual-stage pressure retarded osmosis optimization was 108.8%, 63.18%, and 133.54%, respectively, for Dead Sea-reverse osmosis brine, reverse osmosis brine-wastewater, and seawater-wastewater salinity gradient resources. At optimum operating conditions, using the dual-stage pressure retarded osmosis process as an alternative to the single pressure retarded osmosis process achieved up to a 22% increase in the energy output. Interestingly, the hydraulic pressure at optimum operating conditions was slightly higher than the average osmotic pressure gradients in the dual-stage pressure retarded osmosis process. The study also revealed that power generation in the dual-stage pressure retarded osmosis process operating at constant mass transfer and solute resistivity parameters was overestimated by 2.8%.

Published in Energy Nexus

ISSN: 2772-4271 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Mechanical engineering and machinery: Renewable energy sources; Agriculture: Agriculture (General)
Website: https://www.journals.elsevier.com/energy-nexus

About the journal

Abstract

Keywords