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Power generation system based on pressure retarded osmosis with a commercially-available hollow fiber PRO membrane module using seawater and freshwater
- Source :
- Desalination. 499:114805
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- This study evaluates the feasibility of a power generation system adopting pressure retarded osmosis (PRO) using seawater and fresh water. The authors measured the membrane power density of a commercially available hollow fiber membrane module. The power density of the current membrane module is 3.1 W/m2, but 6.5 W/m2 is required to realize a commercially feasible power plant adopting PRO. In this case of the net output power is 2.8 W/m2 when the DS pressure was 1.5 MPa and the FS pressure was 0.1 MPa, respectively. The cost of power generation is 0.20 $/kWh assuming a commercial plant that uses 1 million m3 of seawater per day and has the calculated membrane power density. It is necessary to improve the A and B values per membrane module to realize this system. Here, the A and B values are coefficients representing water permeability and salt permeability, respectively. The target membrane power density can be achieved using A and B values per membrane module of 2.05 × 10−6 m/s/MPa and 5.5 × 10−9 m/s, respectively. This evaluation is based on theoretical calculations using the solution-diffusion model of membrane permeation in PRO.
- Subjects :
- Materials science
Power station
Mechanical Engineering
General Chemical Engineering
Nuclear engineering
Pressure-retarded osmosis
02 engineering and technology
General Chemistry
Permeation
021001 nanoscience & nanotechnology
Membrane
Electricity generation
020401 chemical engineering
Hollow fiber membrane
General Materials Science
Seawater
0204 chemical engineering
0210 nano-technology
Water Science and Technology
Power density
Subjects
Details
- ISSN :
- 00119164
- Volume :
- 499
- Database :
- OpenAIRE
- Journal :
- Desalination
- Accession number :
- edsair.doi...........2005d3e7e3dc181f2e0f37fae3315b96