Development of polysulfone /silver oxide membranes for separation of natural organic matters
In this present work, the development of polysulfone (PSf)/silver oxide membrane was conducted with the used of silver oxide as hydrophilic additives, polyethylene glycol (PEG) as pore forming agent and 2,4,6-triaminopyrimidine (TAP) as a compatibilizer for separation natural organic matters (NOM)....
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| தலைமை எழà¯à®¤à¯à®¤à®¾à®³à®°à¯: | |
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| வடிவமà¯: | Thesis |
| வெளியீடபà¯à®ªà®Ÿà¯à®Ÿà®¤à¯: |
2014
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| பகà¯à®¤à®¿à®•à®³à¯: | |
| நிகழà¯à®¨à®¿à®²à¯ˆ அணà¯à®•à®²à¯: | http://eprints.uthm.edu.my/7489/ http://eprints.uthm.edu.my/7489/1/muhamad_zaini_yunos.pdf |
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| தொகà¯à®ªà¯à®ªà¯: | In this present work, the development of polysulfone (PSf)/silver oxide membrane
was conducted with the used of silver oxide as hydrophilic additives, polyethylene
glycol (PEG) as pore forming agent and 2,4,6-triaminopyrimidine (TAP) as a
compatibilizer for separation natural organic matters (NOM). The PSfIsilver oxide
membranes were characterized based on their contact angle, thermal behaviour,
tensile strength and morphology. The results were correlated with membrane
performance for NOM separation. The NOM samples used in this study were
collected from Sembrong river water in Parit Raja, Johor, Malaysia. The addition of
silver oxide was found to increase membrane hydrophilicity and improved water
permeability up to 323 liter per meter hour (LMH) for 1.5 wt. % silver oxide content.
Silver oxide also has improved membrane antifouling properties. The effect of PEG
as a pore forming agent in PSflsilver oxide membrane was investigated by
manipulating PEG content fiom 8 wt. % to 16 wt. % at fixed concentration of PSf,
silver oxide and TAP. It was observed that high PEG concentration improved the
water permeation properties of the membrane. Tensile strength increment, silver
oxide aggregation reduction, low silver loss during immersion and permeation
confirmed that TAP had successfully enhanced compatibility between PSf and silver
oxide. TAP has also improved rejection and antifouling of the membrane against
NOM. The entrapment of silver oxide in PSf membrane was proved using Fourier
transform infrared (FTIR) and X-ray diffraction (XRD). However, TAP was found to
decrease membrane permeability. Therefore, the optimization of membrane
formulation was carried out using response surface methodology (RSM), wherein the
main responses were pure water flux and NOM rejection. The optimum amount of
each component for membrane fabrication was found to be 10.58 wt. % PEG, 2.0 wt.
% silver oxide and 0.3 wt. % TAP. The average confirmation run of experimental
results for this optimum formulation was 356 LMH permeation and 94.38 %
rejection, which was only 5.90 % and 1.48 % off respectively from predicted results. |
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