کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
625102 | 1455417 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Factorial design applied to flux decline of anionic polyacrylamide removal from water by modified polyvinylidene fluoride ultrafiltration membranes Factorial design applied to flux decline of anionic polyacrylamide removal from water by modified polyvinylidene fluoride ultrafiltration membranes](/preview/png/625102.png)
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.
Journal: Desalination - Volume 274, Issues 1–3, 1 July 2011, Pages 7–12