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Conceptual demonstration of novel closed-loop pressure retarded osmosis process for sustainable osmotic energy generation

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  • Han, Gang
  • Ge, Qingchun
  • Chung, Tai-Shung

Abstract

For the first time, one novel closed-loop pressure retarded osmosis (PRO) process promoted by an effective hydroacid complex draw solution has been demonstrated for harvesting the renewable salinity-gradient energy. The complex draw solute was molecularly constructed to possess unique characteristics of high osmotic pressure, large molecular size and relative low viscosity, and easy regeneration. Compared to conventional PRO processes, the newly developed closed-loop PRO process exhibits promising advantages of sustainable high power output, negligible internal concentration polarization and low membrane fouling, as well as no problems of feed water pretreatment and brackish water discharge. Employing a highly permeable (A=4.30 LMH/bar) and selective (B=0.47 LMH) thin film composite PRO hollow fiber membrane, a power density of 16.2W/m2 can be achieved with an ultralow reverse solute flux (Js/Jw<0.062gL−1) at 12bar when using 1M complex draw solution and deionized water as feeds. The diluted complex draw solution can be regenerated via a solvent precipitation process, and the outstanding PRO performance could be almost fully recovered. We believe the newly developed closed-loop PRO process shows great potential for salinity-gradient energy capture, although the specific benefits have to be fully defined through energy or cost analysis.

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  • Han, Gang & Ge, Qingchun & Chung, Tai-Shung, 2014. "Conceptual demonstration of novel closed-loop pressure retarded osmosis process for sustainable osmotic energy generation," Applied Energy, Elsevier, vol. 132(C), pages 383-393.
    • Handle: RePEc:eee:appene:v:132:y:2014:i:c:p:383-393
    DOI: 10.1016/j.apenergy.2014.07.029
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    1. Bruce E. Logan & Menachem Elimelech, 2012. "Membrane-based processes for sustainable power generation using water," Nature, Nature, vol. 488(7411), pages 313-319, August.
    2. Li, Xue & Chung, Tai-Shung, 2014. "Thin-film composite P84 co-polyimide hollow fiber membranes for osmotic power generation," Applied Energy, Elsevier, vol. 114(C), pages 600-610.
    3. Reali, M., 1980. "Closed cycle osmotic power plants for electric power production," Energy, Elsevier, vol. 5(4), pages 325-329.
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    1. Maisonneuve, Jonathan & Laflamme, Claude B. & Pillay, Pragasen, 2016. "Experimental investigation of pressure retarded osmosis for renewable energy conversion: Towards increased net power," Applied Energy, Elsevier, vol. 164(C), pages 425-435.
    2. Zadeh, Ali Etemad & Touati, Khaled & Mulligan, Catherine N. & McCutcheon, Jeffrey R. & Rahaman, Md. Saifur, 2022. "Closed-loop pressure retarded osmosis draw solutions and their regeneration processes: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 159(C).
    3. Jihye Kim & Kwanho Jeong & Myoung Jun Park & Ho Kyong Shon & Joon Ha Kim, 2015. "Recent Advances in Osmotic Energy Generation via Pressure-Retarded Osmosis (PRO): A Review," Energies, MDPI, vol. 8(10), pages 1-25, October.
    4. Altaee, Ali & Palenzuela, Patricia & Zaragoza, Guillermo & AlAnezi, Adnan Alhathal, 2017. "Single and dual stage closed-loop pressure retarded osmosis for power generation: Feasibility and performance," Applied Energy, Elsevier, vol. 191(C), pages 328-345.
    5. Tamburini, A. & Tedesco, M. & Cipollina, A. & Micale, G. & Ciofalo, M. & Papapetrou, M. & Van Baak, W. & Piacentino, A., 2017. "Reverse electrodialysis heat engine for sustainable power production," Applied Energy, Elsevier, vol. 206(C), pages 1334-1353.
    6. Wan, Chun Feng & Chung, Tai-Shung, 2018. "Techno-economic evaluation of various RO+PRO and RO+FO integrated processes," Applied Energy, Elsevier, vol. 212(C), pages 1038-1050.
    7. He, Wei & Wang, Yang & Shaheed, Mohammad Hasan, 2015. "Maximum power point tracking (MPPT) of a scale-up pressure retarded osmosis (PRO) osmotic power plant," Applied Energy, Elsevier, vol. 158(C), pages 584-596.
    8. Tawalbeh, Muhammad & Al-Othman, Amani & Abdelwahab, Noun & Alami, Abdul Hai & Olabi, Abdul Ghani, 2021. "Recent developments in pressure retarded osmosis for desalination and power generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).
    9. Long, Rui & Lai, Xiaotian & Liu, Zhichun & Liu, Wei, 2019. "Pressure retarded osmosis: Operating in a compromise between power density and energy efficiency," Energy, Elsevier, vol. 172(C), pages 592-598.
    10. Altaee, Ali & Zaragoza, Guillermo & Drioli, Enrico & Zhou, John, 2017. "Evaluation the potential and energy efficiency of dual stage pressure retarded osmosis process," Applied Energy, Elsevier, vol. 199(C), pages 359-369.
    11. Tufa, Ramato Ashu & Pawlowski, Sylwin & Veerman, Joost & Bouzek, Karel & Fontananova, Enrica & di Profio, Gianluca & Velizarov, Svetlozar & Goulão Crespo, João & Nijmeijer, Kitty & Curcio, Efrem, 2018. "Progress and prospects in reverse electrodialysis for salinity gradient energy conversion and storage," Applied Energy, Elsevier, vol. 225(C), pages 290-331.
    12. Wan, Chun Feng & Chung, Tai-Shung, 2016. "Energy recovery by pressure retarded osmosis (PRO) in SWRO–PRO integrated processes," Applied Energy, Elsevier, vol. 162(C), pages 687-698.

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