2.4. Filtration capacity test
In order to evaluate the SSFF process, a filtration capacity test
was performed on the filtration unit to determine what solid concentration
can be pumped through and the lifetime of a cross-flow
membrane. Tap water was initially used to examine the flow rate
of water in the membrane and flow rate of water as permeate
out of the membrane. Diluted pretreated slurry (5%, 7.5%, 10%,
11%, 12%, 13% and 14%) was successfully pumped through the filtration
device without clogging. Finally, slurry adjusted to 14.4%
SS concentration was enzymatically prehydrolysed and used to
evaluate how long the membrane can be used for effective filtration
of the glucose until clogging or fouling occurs.