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Removal of dyes from textile wastewater by using nanofiltration membranes modified by interfacial polymerization
With the advent of the textile industries since 19th century the dyeing technology is
thriving ever since. However its progress is followed by lack of responsibility and
knowledge in treating the dye-containing wastewater. There are some emerging
technologies in treating such kind of wastewater, where membrane technology is one of
those technologies that has uniqueness in the performance of separating dyes from
wastewater, accompanied with small amount of energy. However, there are a lot of rooms
for improvement for this membrane technology, especially for the application in treating
textile wastewater in Indonesia. Based on the demand in Indonesia for clean water and further treatment of dye-containing
wastewater, the purpose of this research is to fabricate nanofiltration (NF) membranes to
accommodate those problems. Furthermore, the fabricated NF membrane will be modified
by interfacial polymerization to impart a new selective layer on top of NF membrane in
order to improve the performance of the separation of the dyes from dye-containing
wastewater.
The NF membrane will be created by using polyeherimide (PEl) as polymer, N-methyl-2
pyrollidone (NMP) as solvent and acetone as a non-solvent. The membrane will be
fabricated by applying phase inversion method. The created membrane will be further
modified by interfacial polymerization (IP) method using trimesoyl chloride (TMC) and
m-phenylene diarnine (MPD) as monomers of acyl chloride and amine, immersed in two
immiscible liquids of hexane and water, respectively. The IP method will create a new
selective layer composed of tightly-packed nylon-like polyamide layer that might improve
the separation performance.
This research was conducted into two phase of experiments. In the first phase the
formulation of polymeric dope solution of PEI/Acetone!NMP, in which the best dope
solution of 16/64/20 and 15/65/20 were found.Secondly, those membranes were modified
using IP method with 0.05%TMC in hexane and 1.5%MPD in water. We used dope
composition of 15/65/20 for IP method, because it showed good result for rejection and the
flux is not too low. The experimental res ult as showed that the fluxes ranged.from 0.01 to
0.07 L/m2 h psi, the rejection varied 20 -55% for Reactive Red 120, while that of Reactive
Black 5 ranged around 60-80%/. SEM and FTIR were carried out for comprehending the
reasons behind the improved separation performance. SEM and FTIR revealed that the
interfacial polymerization was successfully developed and the selective layer was created
on top of the membrane surface.
Keywords: Dyes, Textile wastewater treatment, Nanofiltration membrane, Interfacial polymerization.
Barcode | Tipe Koleksi | Nomor Panggil | Lokasi | Status | |
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skp31245 | DIG - FTI | Skripsi | TK FEB r/16 | Perpustakaan | Tersedia namun tidak untuk dipinjamkan - Missing |
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