Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4987614 | Desalination | 2017 | 9 Pages |
Abstract
Steady-state pressure-retarded osmosis (PRO) performance of a pilot-scale (72Â m2) cellulose triacetate (CTA) hollow fiber (HF) module using 0.5Â M NaCl and tap water as the draw solution (DS) and feed solution (FS), respectively, was evaluated by a PRO test system with a DS regeneration unit under a wide range of operational conditions. We investigated the effects of varying operational parameters, such as DS and FS inlet flow rates and hydraulic pressure difference, on PRO performance (water flux, pressure drops on the FS and DS sides, and power density). To estimate the module performance, we used conventional membrane area-based power density (Warea), as well as proposed and used a novel estimable parameter, power output per module volume (Wvol.), which promises to be useful when designing full-scale PRO plants. The obtained Warea of the CTA HF module was 0.14 W/m2 and was approximately one sixth of the Warea reported for a thin-film composite (TFC) polyamide spiral wound (SW) module [Y. C. Kim et al., Environ. Sci. Technol, 2966-2973]. However, the Wvol. of the CTA HF module was 1.11Â kW/m3-module and was at least 45% higher than those of the SW modules (0.75Â kW/m3-module).
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Mitsuru Higa, Daisuke Shigefuji, Masafumi Shibuya, Shinsuke Izumikawa, Yuki Ikebe, Masahiro Yasukawa, Nobutaka Endo, Akihiko Tanioka,