Experimental investigation of forward osmosis process for boron removal from water
| Autor: | Hamad AlRomaih, Nawaf Bin Darwish, Abdullah Alkhudhiri, Nidal Hilal, Abdulrahman Alalawi |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Chemistry
Process Chemistry and Technology Forward osmosis Analytical chemistry Aquaporin chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences Desalination Membrane Boron concentration Flux (metallurgy) 020401 chemical engineering Water treatment 0204 chemical engineering Safety Risk Reliability and Quality Boron Waste Management and Disposal 0105 earth and related environmental sciences Biotechnology |
| Zdroj: | Journal of Water Process Engineering. 38:101570 |
| ISSN: | 2214-7144 |
| DOI: | 10.1016/j.jwpe.2020.101570 |
| Popis: | Forward osmosis technology is one of the most rapidly developing processes of desalination and water treatment. The transport of boron in forward osmosis (FO) using various FO membranes was investigated in this study. Three specific membranes — an FTS H2O™ membrane, a PSU membrane and an Aquaporin Inside™ membrane — were applied to study the impact of the feed solution (FS) pH, boron concentration, and draw solution (DS) concentration on boron solute flux, boron rejection and water flux. The results indicated an increment in boron solute flux with increasing DS and boron concentration but a reduction with increasing FS pH. Moreover, increasing the FS pH from 4 to 10 enhanced the rejection rate of boron from 12% to 90% for the FTS H2O™ membrane, from 8% to 84% for the PSU membrane and from 8% to 76% for the Aquaporin Inside™ membrane. With increment in the DS concentration from 0.5 to 3 M, the rejection rate of boron increased from 20% to 54% for the FTS H2O™ membrane, from 14% to 50% for the PSU membrane and from 8% to 40% for the Aquaporin Inside™ membrane. Apparently, increasing the boron concentration in the FS did not have a significant effect on boron rejection. The boron rejection rate was approximately 20–30% for the Aquaporin Inside™ membrane, 32–40% for the FTS H2O™ membrane and 25–35% for the PSU membrane. |
| Databáze: | OpenAIRE |
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