Issue 34, 2016
From the journal:

Physical Chemistry Chemical Physics

Utilization of the Donnan potential induced by reverse salt flux in pressure retarded osmosis systems

Chul Ho Park,*a   Sung Jo Kwak,a   Joo-Youn Nam,a   Moon Seok Janga  and  Jung-Hyun Leeb  

* Corresponding authors

a Jeju Global Research Center (JGRC), Korea Institute of Energy Research (KIER), 200 Haemajihaean-ro, Gujwa-eup, Jeju Specific Self-Governing Province 63357, South Korea
E-mail: chpark@kier.re.kr

b Department of Chemical & biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, South Korea

Abstract

Pressure retarded osmosis (PRO) generates energy from salinity gradients. Reverse salt flux through a semi-permeable PRO membrane reduces the energy efficiency. We demonstrate for the first time the direct conversion of the reverse salt flux into electrochemical potential, recovering >7% positive net power using a single electrochemical PRO membrane.

Graphical abstract: Utilization of the Donnan potential induced by reverse salt flux in pressure retarded osmosis systems

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Article information

DOI
https://doi.org/10.1039/C6CP03939A
Article type
Communication
Submitted
07 Jun 2016
Accepted
29 Jul 2016
First published
15 Aug 2016

Phys. Chem. Chem. Phys., 2016,18, 23469-23473

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Utilization of the Donnan potential induced by reverse salt flux in pressure retarded osmosis systems

C. H. Park, S. J. Kwak, J. Nam, M. S. Jang and J. Lee, Phys. Chem. Chem. Phys., 2016, 18, 23469 DOI: 10.1039/C6CP03939A

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