Solid-salt pressure-retarded osmosis with exothermic dissolution energy for sustainable electricity production

Wook Choi, Harim Bae, Pravin G. Ingole, Hyung Keun Lee, Sung Jo Kwak, Nam Jo Jeong, Soon Chul Park, Jong Hak Kim, Jonghwi Lee, Chul Ho Park

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Salinity gradient power (SGP) systems have strong potential to generate sustainable clean electricity for 24 hours. Here, we introduce a solid-salt pressure-retarded osmosis (PRO) system using crystal salt powders rather than seawater. Solid salts have advantages such as a small storage volume, controllable solubility, high Gibbs dissolution energy, and a single type of water intake, low pretreatment costs. The power densities with 3 M draw solutions were 11 W/m2 with exothermic energy and 8.9 W/m2 without at 35 bar using a HTI FO membrane (water permeability A = 0.375 L m-2 h-1 bar-1). These empirical power densities are ~13% of the theoretical value.

Original languageEnglish
Pages (from-to)113-126
Number of pages14
JournalMembrane Water Treatment
Volume6
Issue number2
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

Osmosis
osmosis
electricity
Dissolution
Electricity
Salts
dissolution
salt
energy
Water
Seawater
Powders
solubility
Solubility
permeability
crystal
membrane
seawater
Membranes
salinity

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Water Science and Technology

Cite this

Choi, Wook ; Bae, Harim ; Ingole, Pravin G. ; Lee, Hyung Keun ; Kwak, Sung Jo ; Jeong, Nam Jo ; Park, Soon Chul ; Kim, Jong Hak ; Lee, Jonghwi ; Park, Chul Ho. / Solid-salt pressure-retarded osmosis with exothermic dissolution energy for sustainable electricity production. In: Membrane Water Treatment. 2015 ; Vol. 6, No. 2. pp. 113-126.
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Choi, W, Bae, H, Ingole, PG, Lee, HK, Kwak, SJ, Jeong, NJ, Park, SC, Kim, JH, Lee, J & Park, CH 2015, 'Solid-salt pressure-retarded osmosis with exothermic dissolution energy for sustainable electricity production', Membrane Water Treatment, vol. 6, no. 2, pp. 113-126. https://doi.org/10.12989/mwt.2015.6.2.113

Solid-salt pressure-retarded osmosis with exothermic dissolution energy for sustainable electricity production. / Choi, Wook; Bae, Harim; Ingole, Pravin G.; Lee, Hyung Keun; Kwak, Sung Jo; Jeong, Nam Jo; Park, Soon Chul; Kim, Jong Hak; Lee, Jonghwi; Park, Chul Ho.

In: Membrane Water Treatment, Vol. 6, No. 2, 01.01.2015, p. 113-126.

Research output: Contribution to journalArticle

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AU - Choi, Wook

AU - Bae, Harim

AU - Ingole, Pravin G.

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AU - Kwak, Sung Jo

AU - Jeong, Nam Jo

AU - Park, Soon Chul

AU - Kim, Jong Hak

AU - Lee, Jonghwi

AU - Park, Chul Ho

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