Enhancement of the Dual Pressure Retarded Osmosis (PRO) Process forPower Generation Utilising Seawater and Brackish Water as Draw andFeed Solutions

In this paper, new enhancements of the dual PRO process for powergeneration have been suggested and tested theoretically. Seawater and brackishwater were exploited as draw and feed solutions in the processes. The dual PROprocess, which has been previously suggested as efficient cycle for powergeneration, was used as stranded or reference power cycle. The assessment ofthe newly suggested PRO cycles was done based on the total water volumeproduced as permeate across a selective membrane and hence on the net powergenerated for an individual process. The results indicated that under the sameoperational conditions, the newly suggested PRO cycles were produced higherpower than that produces by the standard one. In addition, the cycle given bycase (3) represented the most powerful PRO cycle.