Zero Liquid Discharge of Ultrahigh-Salinity Brines with Temperature Swing Solvent Extraction

Zero Liquid Discharge of Ultrahigh-Salinity Brines with Temperature Swing Solvent Extraction

Zero liquid discharge (ZLD) of hypersaline brines is technically and energetically challenging. This study demonstrates ZLD of ultrahigh-salinity brines using temperature swing solvent extraction (TSSE), a membrane-less and nonevaporative desalination technology. TSSE utilizes a low-polarity solvent...

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Veröffentlicht in:Environmental science & technology 2020-07, Vol.54 (14), p.9124-9131
Hauptverfasser: Boo, Chanhee, Billinge, Ian H, Chen, Xi, Shah, Kinnari M, Yip, Ngai Yin
Format: Artikel
Sprache:eng
Schlagworte:
Brines
Desalination
Discharge
Drainage water
Evaporation
Irrigation drainage
Irrigation water
Low temperature
Polarity
Recyclability
Salinity
Salinity effects
Sodium chloride
Solid wastes
Solvent extraction
Solvent extraction processes
Solvents
Treatment and Resource Recovery
Ultrahigh temperature
Water quality
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Zusammenfassung:Zero liquid discharge (ZLD) of hypersaline brines is technically and energetically challenging. This study demonstrates ZLD of ultrahigh-salinity brines using temperature swing solvent extraction (TSSE), a membrane-less and nonevaporative desalination technology. TSSE utilizes a low-polarity solvent to extract water from brine and then releases the water as a product with the application of low-temperature heat. Complete extraction of water from a hypersaline feed, simulated by 5.0 M NaCl solution (≈292 g/L TDS), was achieved using diisopropylamine solvent. Practically all of the salt is precipitated as mineral solid waste and the product water contains
ISSN:0013-936X
1520-5851
DOI:10.1021/acs.est.0c02555