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Flux enhancement in reverse osmosis membranes induced by synergistic effect of incorporated palygorskite/chitin hybrid nanomaterial
Flux enhancement in reverse osmosis membranes induced by synergistic effect of incorporated palygorskite/chitin hybrid nanomaterial
- Source :
- Journal of Environmental Chemical Engineering. 9:105432
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- The substrate of RO thin film composite membranes offers support for rejection layer formation. It remarkably affects the physicochemical and structural properties of the developed rejection layer. This denotes the relevance of substrates modification in realizing optimized substrate structure in terms of porosity, thickness and tortuosity with the goal of obtaining highly selective and enhanced hydrophilic membrane. Polyamide thin film nanocomposite (TFN) membranes with its polysulfone (PSF) substrate embedded with palygorskite-chitin (PAL-CH) hybrid nanomaterial have been fabricated in this study. The hybridization of palygorskite and chitin nanofibers was performed under the collision as well as the shear force of ball mill. The TFN membranes with different loadings of PAL-CH in the PSF layer were characterized and applied for desalination process. The incorporation of PAL-CH hybrid increased the finger like structure formation and improved the overall hydrophilicity besides highly cross linked and thinner PA layer. The flux of the neat and PAL-CH membranes was 0.82 L m−2 h−1 and 2.4 L m−2 h−1 respectively. The developed membranes exhibited remarkably improved pure water flux without compromising the salt rejection. Flux enhancement of 192.7% was achieved using 0.01 wt% PAL-CH3 hybrid nanomaterial.
- Subjects :
- Nanocomposite
Materials science
Process Chemistry and Technology
Substrate (chemistry)
02 engineering and technology
010501 environmental sciences
021001 nanoscience & nanotechnology
01 natural sciences
Pollution
chemistry.chemical_compound
Membrane
chemistry
Chemical engineering
Thin-film composite membrane
Nanofiber
Chemical Engineering (miscellaneous)
Polysulfone
Thin film
0210 nano-technology
Waste Management and Disposal
Layer (electronics)
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 22133437
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Journal of Environmental Chemical Engineering
- Accession number :
- edsair.doi...........b4592a121159adec83f2c6c832b3d0e3
- Full Text :
- https://doi.org/10.1016/j.jece.2021.105432