Abstract:
A comparative study was undertaken to investigate the potential of silica-pectin
ultrafiltration membrane on varied operation pressure (0.1-0.3 MPa). Cross-flow
ultrafiltration works were explored with tubular alumina substrates in single and
multichannel configuration. The silica-pectin sol was prepared from TEOS as silica
precursor by sol-gel method, afterward pectin was templated into the silica sol to induce
carbon on it. Thereafter, both of single and multichannel alumina substrates was coated
by the silica-pectin sol via inner coating technique. The study exhibited better
performance of multichannel silica-pectin ultrafiltration membrane (with 4 bores)
compared to the single channel membrane in terms of the permeate quality of UV254
rejection, as well as the permeate flux. The UV254 rejection of multichannel silica-pectin
ultrafiltration membranes conducted over 84% in compliance with highest permeate
fluxes of 234.3 L.m-2.h-1.bar-1 at high operation pressure (TMP 0.3 MPa). The multichannel
ultrafiltration membrane permeate flux in this work is slightly high 60-75% over single
channel. Hence, both single and multichannel silica-pectin membranes exhibited steady
neutralized permeate fluxes under TMP 0.3 MPa conditions for natural 100% peat water
concentration, which indicates that fouling is not occurred during filtration time up to 60
min. Therefore, multichannel silica-pectin ultrafiltration membrane in this work is success
to treatment of natural peat water, that the natural organic matter removal was found
to be fit for uses as clean water sources.
