Modelling mass transport in hollow fibre membranes used for pressure retarded osmosis

► Developed a transport model suitable for hollow fibre membranes in PRO. ► Compared the model with a flat sheet model and the corresponding S parameters. ► Demonstrated the effect of the membrane parameters on the PRO performance. ► Demonstrated the effect of the boundary layer thicknesses on the PRO performance. ► Presented two alternative iso-watt diagrams for estimation of the PRO performance.