AI Article Synopsis
- The text discusses the growing issue of freshwater scarcity due to population growth and highlights seawater desalination as a potential solution.
- It introduces a new type of desalination membrane, called a nanofibrous thin-film composite (NF-TFC) membrane, made from chitosan and poly (vinylpyrrolidone) on a cellulose acetate substrate.
- The membrane shows promising results in salt rejection (98.3%) and water permeation flux (42.9 L/mh), indicating its effectiveness for desalinating seawater.
Article Abstract
Fresh and clean water is consistently depleting and becoming a serious problem with rapid increases in population, so seawater desalination technology has captured global attention. For an efficient desalination process, this work proposes a novel, nanofibrous, thin-film composite membrane (NF-TFC) based on the deposition of the nanofibrous active layer of a blend of chitosan (CS) and poly (vinylpyrrolidone) (PVP) crosslinked with maleic acid on a 3-triethoxysilylpropylamine functionalized cellulose acetate substrate. FTIR analysis demonstrated the development of chemical and physical interactions and confirmed the incorporation of functional groups present in the NF-TFC. Scanning electron microscopy (SEM) micrographs depict the fibrous structure of the active layers. The reverse osmosis (RO) desalination characteristics of NF-TFC membranes are elevated by increasing the concentration of the crosslinker in a CS/PVP blend. Cellulose acetate (CA)-S4 attained an optimal salt rejection of 98.3% and permeation flux of 42.9 L/mh, suggesting that the NF-TFC membranes could be favorable for seawater desalination.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7582265 | PMC |
| http://dx.doi.org/10.3390/ijms21197338 | DOI Listing |
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