To cite this article: Ahmad, A. L., Che Lah, N. F. & Ismail, S. (2018). Ultrasonically aided cross-flow membrane filtration for latex wastewater. J. Phys. Sci., 29(Supp. 1), 57–65, https://doi.org/10.21315/jps2018.29.s1.8
An ultrasonically-aided membrane filtration system that offers clean membrane after being fouled by latex wastewater was developed. Characterisation of latex wastewater was investigated to determine the best and suitable membrane used in this filtration system. The effect of frequency of the ultrasound waves and the sonication time were investigated. All parameters were compared based on the calculation of coefficient k value and the decay ratio (DR%). In overall, low frequency (35 kHz) gives better cleaning efficiency than high frequency (130 kHz) with DR% differences value of 12.2%. The permeate water quality was measured by the permeate turbidity. Even though the quality of permeate flux after the filtration by cleaned-membrane was lower than the filtration by uncleaned-membrane, the differences of these two were acceptable with 1% differences of rejection rate.