کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
625102 1455417 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Factorial design applied to flux decline of anionic polyacrylamide removal from water by modified polyvinylidene fluoride ultrafiltration membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Factorial design applied to flux decline of anionic polyacrylamide removal from water by modified polyvinylidene fluoride ultrafiltration membranes
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 274, Issues 1–3, 1 July 2011, Pages 7–12
نویسندگان
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