Abstract
The ultrafiltration flat-sheet membranes were prepared from poly(ethylene terephthalate) (PET) bottle waste using the phase inversion technique. The effects of non-solvent including water, ethanol and ethylene glycol, and polyethylene glycol (PEG) as the additive on the membrane structure were investigated. The results showed that the membrane prepared using water as a non-solvent exhibited a combination of macrovoid and sponge structures, whereas those using ethanol exhibited a finger-like structure. The membrane prepared using ethylene glycol showed a nonporous structure, which could not be used for membrane application. The addition of PEG as an additive can increase the pore size of the membrane prepared using water and ethanol. In addition, the membrane prepared in ethylene glycol can be fabricated with the addition of PEG. The proposed membranes are expected to be used as a membrane in bioreactors for wastewater treatment.
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