PEMISAHAN KONJAK GLUKOMANAN MENGGUNAKAN MEMBRAN ULTRAFILTRASI
ABSTRACT: Glucomannan is a
polysaccharide from hemicelulose variety that consist of the chain bunch of
galactose, glucose and mannose. Glucomannan can be produced from porang
(Amorphallus konjac) with isolation method using enzyme amylase where
carbohydrate structure from the material will be broken to be monomers glucose
such as galactose, glucose and mannose. One of the efford for increasing yhe
quality and pureness of glucomannan can be used separation method using
ultrafiltration membrane. To know the potential of ultrafiltration membrane for
purification glucomannan will be done research for separation of glucomannan
solution using ultrafiltration membrane. The membrane used in this experiment
is Poly ether sulfon with pores 20 kda. This research used feed concentration
of 0.5 gr/L and 1.5 gr/L, with operation pressure 1 bar, 2 bar and 3 bar. The
characteristic of KGM showed that the KGM having particle size of 81.2 to 186
μm. The membrane permeability is 11.87 L/m2 h bar with porous assimetric type.
Flux profile show that the increase of pressure will decrease the membrane
flux. In addition, the membrane rejection is higher for pressure 3 bar than 1
bar and 2 bar. However at pressure of 2 and 3 bar membrane rejection decrease
with the increase of concentration due to lower permeate mass transfer.
Moreover, low permeate flux is caused by fouling and polarization of
concentration. We suggest for the next research about fouling affect and
polarization of membrane ultrafiltration.
Penuis: Yusiana Dewi Afriyani,
Anisah Nirmala, Nita Aryanti
Kode Jurnal: jpkimiadd130337
