Effect of DS Concentration on the PRO Performance Using a 5-Inch Scale Cellulose Triacetate-Based Hollow Fiber Membrane Module

Effect of DS Concentration on the PRO Performance Using a 5-Inch Scale Cellulose Triacetate-Based Hollow Fiber Membrane Module

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In this study, pressure-retarded osmosis (PRO) performance of a 5-inch scale cellulose triacetate (CTA)-based hollow fiber (HF) membrane module was evaluated under a wide range of operating conditions (0.0–6.0 MPa of applied pressure, 0.5–2.

0 L/min feed solution (FS) 6 Piece King Poster Bedroom inlet flow rate, 1.0–6.0 L/min DS inlet flow rate and 0.1–0.

9 M draw solution (DS) concentration) by using a PRO/reverse osmosis (RO) hybrid system.The subsequent RO system for DS regeneration enabled the evaluation of the steady-stated module performance.In the case of pilot-scale module operation, since the DS dilution and the feed solution (FS) up-concentration had occurred and was not negligible, unlike the lab-scale experiment, PRO performance strongly depended on operating conditions such as inlet flow rates of both the DS and FS concentration.To compare the module performance with different configurations, we proposed a converted parameter in which a difference of the packing density between the spiral wound (SW) and the HF module was fairly considered.

In the case of HF configuration, because of high packing density, volumetric-based performance was higher than that of grip right SW module, that is, the required number of the module would be less than that of SW module in a full-scale PRO plant.