Abstract
A novel composite membrane was synthesized using crosslinked polyamide and fly ash ceramic substrate for phenol removal. Glutaraldehyde was used as crosslinker. Characterization shows that synthesized membrane possesses good permeability (0.184 l.m-2.h-1.kPa-1), MWCO (1.7 kDa), average pore size (1.08 nm) and good chemical stability. RSM was adopted for phenol removal studies. Box-Behnken-Design using quadratic model was chosen for three operating parameters (feed phenol concentration, pH and applied pressure) against two responses (phenol removal, flux). ANOVA shows that model is statistically valid with high coefficient of determination (R2) value for flux (0.9897) and phenol removal (0.9302). The optimum conditions are obtained as pH 2, 46 mg.l-1 (feed phenol concentration) and 483 kPa (applied pressure) with 92.3% phenol removal and 9.2 l.m-2.h-1 flux. Data validation with deviation of 4% confirms the suitability of model. Obtained results reveal that prepared composite membrane can efficiently separate phenol from aqueous solution.
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