Experimental and theoretical study of a forward osmosis hollow fiber membrane module with a cross-wound configuration

Shibuya, Masatoyo; Yasukawa, Masahiro; Goda, Shohei; Sakurai, Hidehiko; Takahashi, Tomoki; Higa, Mitsuru; Matsuyama, Hideto

doi:10.1016/j.memsci.2015.12.040

Cited by 40 publications

(19 citation statements)

References 51 publications

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“…This is because the HF membrane module has about eight times higher packing density ( S m / V mod ) than that of the SW modules. Moreover, an appropriate flow pattern, especially in the FS-side also would increase the PRO performance of the HF module, which is different from the SW module case because the FS side central partitioning wall for the SW FO module is absent in the case of HF FO module [ 30 ]. Therefore, these results clearly indicated that the CTA HF module was more efficient than the SW module, despite much lower membrane performance.…”

Section: Resultsmentioning

confidence: 99%

“…The HF has an outer active layer surface [ 32 ] and therefore DS and FS were introduced to the shell-side and the lumen-side of the HF membranes, respectively. The DS flow was streamed from the central core tube, where the HF bundles were crossly wounded, into the radial flow direction as shown in our previous literature [ 30 ].…”

Section: Methodsmentioning

confidence: 99%

“…The purpose of this study was to evaluate the PRO performance of a pilot-scale PRO HF module with an effective area exceeding 70 m 2 under wide range operational conditions (e.g., inlet flow rates of DS and FS, applied pressure differences and DS concentrations). To evaluate the steady state HF module performance, a PRO/RO hybrid system in which the RO system as DS regeneration system [ 30 ] was used in this study. 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.…”

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: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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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“…Cellulose triacetate (CTA)-based hollow fiber (HF) membrane is therefore one of the commercially successful semipermeable membranes that has a long historical development due to its reliable excellent performances especially for drinking water production from seawater. In addition, recently, because of the versatile demands in energy consumption and environmental concerns about brine discharge as mentioned above, CTA-based HFs have caught attention for the usage of different methods, such as forward osmosis (FO) [ 23 , 24 , 25 , 26 ], pressure-retarded osmosis (PRO) [ 11 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ] and brine concentration (BC) [ 34 , 35 ] for the emerging technologies. Because their applications require optimum characteristics individually, different strategies for designing the membrane and module are required in spite of using the same CTA material.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Triacetate (CTA) Hollow-Fiber (HF) Membranes for Sustainable Seawater Desalination: A Review

et al. 2021

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Cellulose triacetate (CTA)-based hollow fiber (HF) membrane is one of the commercially successful semipermeable membranes that has had a long progress since the time the excellent semi-permeable feature of cellulose-based polymers was found in 1957. Because of the reliable and excellent performances, especially for drinking water production from seawater, CTA-HFs have been widely used as reverse osmosis (RO) membranes, especially in arid regions. In this review, recent developments and research trends on CTA-HF membranes for seawater reverse osmosis (SWRO) plants were presented. A flux analytical model, an optimization strategy for chlorine injection without losing salt rejection performance, and a module of current high performance CTA RO membranes along with its plant operation data were updated in this paper. Furthermore, a newly developed CTA-HF membrane for brine concentration (BC) application (called BC membrane) was also addressed. Finally, RO/BC hybrid operation was introduced as an effective SWRO desalination technique that enables minimizing the volume of brine disposal from the RO plant by increasing the recovery ratio and the subsequent amount of produced freshwater, without an additional energy input.

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“…These modules have been studied in other membrane processes such as RO, pressure retarded osmosis (PRO), and forward osmosis (FO). [14][15][16][17][18][19][20] However, testing of the OARO process using pilot scale membrane modules has not been investigated to date. In this research, we conducted fundamental studies of OARO using a cellulose triacetate (CTA) 5-inch hollow fiber membrane module, which is widely used in Middle Eastern seawater desalination plants.…”

Section: Introductionmentioning

confidence: 99%

Osmotically Assisted Reverse Osmosis Utilizing Hollow Fiber Membrane Module for Concentration Process

Togo

Nakagawa

Shintani

et al. 2019

Ind. Eng. Chem. Res.

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Solution concentration processes such as evaporation, freeze concentration, and reverse osmosis are commonly used in food processing and environmental applications. However, these processes are frequently examined to lower energy costs and improve concentration ratios. This study performed concentration tests and theoretical calculations for osmotically assisted reverse osmosis (OARO) using a pilot scale hollow fiber membrane module. In the concentration test using NaCl solution, water flux and concentration ratio were measured with changing flow rate, concentration, and applied pressure. Water permeation and solution concentration were achieved, even using concentrated salt solutions (0.5 and 1.0 M), with applied pressure of 8-12 bar, which was lower than the osmotic pressure (25 bar for 0.5 M NaCl; 50 bar for 1.0 M NaCl). The calculation results were in good agreement with the experimental results and the validity of the calculation model was confirmed. Analysis revealed that the concentration gradient and concentration polarization in the module changed with operating conditions and these factors affected the water flux and the concentration ratio.

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Experimental and theoretical study of a forward osmosis hollow fiber membrane module with a cross-wound configuration

Cited by 40 publications

References 51 publications

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

Cellulose Triacetate (CTA) Hollow-Fiber (HF) Membranes for Sustainable Seawater Desalination: A Review

Osmotically Assisted Reverse Osmosis Utilizing Hollow Fiber Membrane Module for Concentration Process

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