Highly Efficient Novel Nanofiltration Membrane for Treatment of Acidic Wastewater wastewater nanofiltration nano
Graphene eBook Compilation of the top interviews, articles, and news in the last year. Download a free copy This type of membrane exhibits high H+ permeation while maintaining high retention for organics, which is useful for achieving “zero discharge” in the reclamation of strongly acidic organic wastewater.Commercially available NF membranes frequently exhibit poor performance and stability in the treatment of acidic wastewater because they are acid sensitive.
To increase separation selectivity for H+/organics, the researchers aimed to increase membrane permeability and enhance separation layer homogeneity. Then, to create the acid-resistant poly network, the 3-aminobenzenesulfonamide with a strong conjugation effect was chosen as the aqueous monomer to react with trimesoyl chloride.
The membrane demonstrated pigment/H+ selectivity that was superior to the commercial GE Duracid membrane at 8 wt% H2SO4 condition, even for wastewater that was actually acidic from cane molasses. This was possible owing to the membrane’s acid-stable polysulfonamide backbone, low layer thickness, and narrow pore size distribution.
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