Experimental study of a hollow fiber membrane module in pressure-retarded osmosis: Module performance comparison with volumetric-based power outputs

Higa, Mitsuru; Shigefuji, D.; Shibuya, Masatoyo; Izumikawa, Shinsuke; Ikebe, Yuki; Yasukawa, Masahiro; Endo, Nobutaka; Tanioka, Akihiko

doi:10.1016/j.desal.2017.06.015

Cited by 21 publications

(33 citation statements)

References 45 publications

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“…Figure 1 shows a schematic diagram of the PRO/RO hybrid system for the HF module performance analysis [ 31 ]. This system consisted of a PRO evaluation unit and a DS-regeneration unit by RO.…”

Section: Methodsmentioning

confidence: 99%

“…In the case of a pilot-scale module experiment, the FS up-concentration and DS dilution must have occurred and are not negligible unlike the lab-scale experiment. Therefore, to estimate the effect of FS up-concentration, the permeation rate ( η ) was defined as follows [ 31 ]:

…”

Section: Methodsmentioning

confidence: 99%

“…When η = 100, the entire FS-side solution permeates through the membrane to the DS side. To estimate the effect of DS dilution, the dilution factor ( Φ ) is also defined for as follows [ 31 ]:

…”

Section: Methodsmentioning

confidence: 99%

“…To compare the PRO membrane performance in lab-scale, membrane area-based power density ( W area ), defined as the calculated power output per unit membrane area, is often used as follows [ 31 , 34 ]:

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Section: Methodsmentioning

confidence: 99%

“…We investigated the effect of operational parameters such as DS and FS inlet flow rates, DS concentration, and applied hydraulic pressure on the module performance. Furthermore, the PRO performance of the CTA-HF module was then compared with those of the SW modules reported in literature that considered membrane area-based and volumetric-based power density [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

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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) 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 SW module, that is, the required number of the module would be less than that of SW module in a full-scale PRO plant.

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Section: Methodsmentioning

confidence: 99%

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Section: Methodsmentioning

confidence: 99%

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Section: Methodsmentioning

confidence: 99%

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Section: Methodsmentioning

confidence: 99%