Effects of hydrophilic CuO nanoparticles on properties and performance of PVDF VMD membranes

Effects of Inorganic Nano-Additives on Properties and Performance of Polymeric Membranes in Water Treatment

“…On the other hand, Hou et al [86] revealed that there was a threshold concentration at 3 wt.% beyond which LEP w began to increase, which is consistent with the trend observed between the maximum pore size and concentration as discussed earlier in section 3-5-1. A similar behavior was also reported by Baghbanzadeh et al [153] in a novel work where they used hydrophilic CuO nanoparticles to prepare PVDF/CuO nanocomposite membranes for a vacuum membrane distillation (VMD) desalination process.…”

“…The results also demonstrated that porosity, mean pore size, and maximum pore size all showed a maximum at the concentration of 3.0 wt.% of the nano-fillers, which is attributed to the demixing rate change as the incorporation of the nanoparticles. Baghbanzadeh et al [153] also expressed that upon the addition of hydrophilic CuO nanoparticles into the PVDF neat membrane, surface pore size met a maximum at the medium concentrations, while the porosity increase was not significant at those loadings.…”

“…Hou et al [19] also demonstrated that CaCO 3 nanoparticles enhance the rejection performance of a PVDF membrane. According to Baghbanzadeh et al [153], the increase in the water permeability was without any compromise in the salt rejection and both the neat and PVDF/CuO nanocomposite membrane showed a perfect rejection of NaCl (99.99%).…”

Effects of superhydrophobic SiO2 nanoparticles on the performance of PVDF flat sheet membranes for vacuum membrane distillation

“…This shows that at concentration N10 wt.%, the membrane loses its asymmetric morphology, adapting to a more symmetric morphology made up primarily of the sponge-like layer and very dense. It is noted that the flux of the hydrophilic CuO nanoparticles incorporated PVDF composite membranes which increases with increasing concentration of nanoparticles due to the enlarging surface pores and thickening the finger-like layer [33].…”

Graphene/PVDF flat-sheet membrane for the treatment of RO brine from coal seam gas produced water by air gap membrane distillation

“…Several membrane design and surface modification techniques have been carried out to enhance the membrane properties such as plasma treatment [11], addition of pore additives (e.g. polyethylene glycol) [12] and incorporation of inorganic nanoparticles such as clay [13], calcium carbonate [14], CuO [15], carbon nanotube [16,17] and activated carbon [18]. The addition of nanoparticles is known to affect the morphology, porosity, pore size and mechanical properties of the membrane, and provides additional diffusion pathway.…”