DEVELOPMENT OF BULK-MODULUS MEASUREMENT APPARATUS FOR CHARACTERIZING MECHANICAL PROPERTIES OF NON-DARCY MEMBRANE
Water is one of the natural resources that has a very important function for the life of the entire world, including humans. However, the effectiveness in the use of water is still lacking because of the lack of clean water that is needed requires small (micro) and large (micro) impurities using...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/49146 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Water is one of the natural resources that has a very important function for the life
of the entire world, including humans. However, the effectiveness in the use of water
is still lacking because of the lack of clean water that is needed requires small
(micro) and large (micro) impurities using membranes as the filtration medium.
Darcy's law explains the relationship between the discharge rate and the fluid
passing through the porous media caused by changes in pressure. To find out the
membrane can be used for the filtration process, a filter test using fluid (water) that
carried out. Some types of membranes such as glass microfiber membranes show
an interesting phenomenon where compilation is carried out on these tests, not
fulfilling the Darcy equation. It happens because of the fiber permeability factor in
this type of membrane that changes due to changes in pressure must be approached
by the non-Darcy equation. To test the pressure change factor, a measuring
instrument was made that can change the pressure of the bulk membrane modulus
with an atomized system with a high level of accuracy. Calibration of the system
that has been made shows good results with a linear regression value (R2) of more
than 0.95 in the process of conversion from position (step) to position (?m). The
system consists of digital scales based on load cell sensors with micrometers as a
medium for compressing automated membranes using a 28BYJ-48 stepper motor
with ULN2003APG driver. In testing this system, variations in the type of
membrane used are Whatman membrane (GF / F, GF / B) and filter membrane
(MFIHPF, MFPN, IPF), as well as variations in the membrane suppressor crosssectional
area.. The results obtained on the test membrane are displayed in a graph.
From the resulting graph we can also see the mechanical properties of the tested
membrane. |
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