Methylene blue is a cation dyestuff that is often used in
the textile industry, and is susceptible to being discharged
into water because, this compound is only used about 5%
while the remaining 95% will be disposed of as waste.
The method of handling waste that is often done is to use
a membrane. One of the superior polymers used as
membranes is PVDF which is thermoplastic (strong) but
has a lack of rejection which is less than the maximum
which is usually caused by pore size that is too small so
that it can easily be blocked (fouling). To overcome this,
bentonite is added to the PVDF membrane in hopes of
increasing rejection. Bentonite is then dispersed into a
PVDF membrane that is made by phase reversal. PVDF
membranes and PVDF-Bentonite composite membranes
have been successfully made with porous, hydrophobic
characterization, and by adding bentonites to the polymer
will reduce the contact angle. PVDF-Bentonite
composite membrane was successfully made with a
thickness between 0.05-0.08 mm and an average pore
size below 2 μm so that it is classified as an ultrafiltration
membrane. After testing the separation ability of the
PVDF-Bentonite composite membrane against the
sample solution, it is known that the membrane rejection
coefficient under optimum conditions is at 1 bar pressure
and pH 5 with a rejection coefficient value of 82.65% and
permeability of 19.197 Lm-2h
-1bar-1 An increase in the
rejection coefficient and permeability of the modified
membrane where under the same conditions the usual
ultrafiltration PVDF membrane has a rejection
Synthesis and Characterization Nanofibers Membrane by electrospinning for
Adsorption of Methylene blue
coefficient of 76.45% and permeability of 8.921 Lm-2h1bar