Introducing ultra-high-pressure low-salt-rejection reverse osmosis for energy-efficient concentration of industrial brines
This study demonstrated a novel membrane-based process consisting of Ultra-High-Pressure Reverse Osmosis (UHPRO) and Ultra-High-Pressure Low-Salt Rejection Reverse Osmosis (UHP-LSRRO) at 120 bar, combined with energy recovery technology in the context of brine concentration. Basic assessment of ener...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-12-01
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| Series: | Water Resources and Industry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212371725000277 |
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| Summary: | This study demonstrated a novel membrane-based process consisting of Ultra-High-Pressure Reverse Osmosis (UHPRO) and Ultra-High-Pressure Low-Salt Rejection Reverse Osmosis (UHP-LSRRO) at 120 bar, combined with energy recovery technology in the context of brine concentration. Basic assessment of energy demand and efficiency analysis were done based on experimental investigations using available industrial-scale equipment to facilitate accelerated industrial implementation, including the application-specific performance of the 4-inch membrane elements and the energy recovery device.With the membrane module prototype in this study, a maximum NaCl concentration of around 170 g/L was determined while the flux remained higher than 3.5 L/m2h. A simple and robust plant design combining UHPRO and UHP-LSRRO was proposed, and the integration of energy recovery was considered. A comparative energy consumption analysis revealed that the process achieved an approximate 45 % reduction in energy demand relative to Mechanical Vapor Compression (MVC) systems when concentrating sodium chloride solutions from initial concentrations of 65 g/L to final concentrations of 300 g/L. |
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| ISSN: | 2212-3717 |