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Open AccessArticle

Comparison of Pressure-Retarded Osmosis Performance between Pilot-Scale Cellulose Triacetate Hollow-Fiber and Polyamide Spiral-Wound Membrane Modules

1
Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
2
Blue Energy Center for SGE Technology (BEST), 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
3
Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, Jejawi 02600, Perlis, Malaysia
4
Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, Pusat Pengajian Jejawi 3, Jejawi 02600, Perlis, Malaysia
*
Author to whom correspondence should be addressed.
Academic Editor: Oumarou Savadogo
Membranes 2021, 11(3), 177; https://doi.org/10.3390/membranes11030177
Received: 1 February 2021 / Revised: 24 February 2021 / Accepted: 25 February 2021 / Published: 28 February 2021
(This article belongs to the Special Issue Seawater Reverse Osmosis Desalination)
Pressure-retarded osmosis (PRO) has recently received attention because of its ability to generate power via an osmotic pressure gradient between two solutions with different salinities: high- and low-salinity water sources. In this study, PRO performance, using the two pilot-scale PRO membrane modules with different configurations—five-inch cellulose triacetate hollow-fiber membrane module (CTA-HF) and eight-inch polyamide spiral-wound membrane modules (PA-SW)—was evaluated by changing the draw solution (DS) concentration, applied hydrostatic pressure difference, and the flow rates of DS and feed solution (FS), to obtain the optimum operating conditions in PRO configuration. The maximum power density per unit membrane area of PA-SW at 0.6 M NaCl was 1.40 W/m2 and 2.03-fold higher than that of CTA-HF, due to the higher water permeability coefficient of PA-SW. In contrast, the maximum power density per unit volume of CTA-SW at 0.6 M NaCl was 4.67 kW/m3 and 6.87-fold higher than that of PA-SW. The value of CTA-HF increased to 13.61 kW/m3 at 1.2 M NaCl and was 12.0-fold higher than that of PA-SW because of the higher packing density of CTA-HF. View Full-Text
Keywords: pressure-retarded osmosis; pilot scale; hollow fiber; spiral wound; power density pressure-retarded osmosis; pilot scale; hollow fiber; spiral wound; power density
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MDPI and ACS Style

Kakihana, Y.; Jullok, N.; Shibuya, M.; Ikebe, Y.; Higa, M. Comparison of Pressure-Retarded Osmosis Performance between Pilot-Scale Cellulose Triacetate Hollow-Fiber and Polyamide Spiral-Wound Membrane Modules. Membranes 2021, 11, 177. https://doi.org/10.3390/membranes11030177

AMA Style

Kakihana Y, Jullok N, Shibuya M, Ikebe Y, Higa M. Comparison of Pressure-Retarded Osmosis Performance between Pilot-Scale Cellulose Triacetate Hollow-Fiber and Polyamide Spiral-Wound Membrane Modules. Membranes. 2021; 11(3):177. https://doi.org/10.3390/membranes11030177

Chicago/Turabian Style

Kakihana, Yuriko; Jullok, Nora; Shibuya, Masafumi; Ikebe, Yuki; Higa, Mitsuru. 2021. "Comparison of Pressure-Retarded Osmosis Performance between Pilot-Scale Cellulose Triacetate Hollow-Fiber and Polyamide Spiral-Wound Membrane Modules" Membranes 11, no. 3: 177. https://doi.org/10.3390/membranes11030177

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