| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 625102 | Desalination | 2011 | 6 Pages |
Experiments were performed with a lab-scale setup under constant flux conditions with synthetic feed water containing anionic polyacrylamide (APAM) colloid as a fouling component to predict the decline of UF process. A four-factor two-level full factorial design analysis was conducted to screen the significant factors influencing relative flux reduction (J/J0) of APAM with 6880 kDa in ultrafiltration (UF) process. Factors investigated were pH of the solution (3 ~ 10), total dissolved solids (TDS) (0 ~ 3.5 g/L), concentrations of APAM (10 ~ 100 mg/L), and transmembrane pressures (TMP) (0.07 ~ 0.2 MPa). A significant TMP effect on J/J0 of this APAM UF process was obtained. Analysis of variance (ANOVA) showed a high coefficient of determination value (R2 = 0.9658) and satisfactory prediction regression model was derived. The optimum UF TMP, pH and initial concentration of solution were found to be 0.07 MPa, 3, and 10 mg/L, respectively. Under the optimal value of process parameters, J/J0 (24.9%) was obtained for this UF process after 30 min.
Research Highlights► A factorial design to screen the significant factors that influenced flux decline. ► Factorial design could be a powerful tool to identify the optimal UF process conditions. ► The results show importance order of factors in APAM UF process: TMP > C > pH > C × pH. ► Under the optimal condition, J/J0 (24.9%) was obtained for this UF process after 30 min.
