کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
635842 1456113 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrostatic contributions to permeate flux behavior in single bovine serum albumin ultrafiltration
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Electrostatic contributions to permeate flux behavior in single bovine serum albumin ultrafiltration
چکیده انگلیسی

A modified free-solvent based (FSB) osmotic pressure model was used to characterize the pressure-dependent permeate flux behavior of completely rejected bovine serum albumin (BSA) UF. Tangential-flow diafiltration experiments (30 kDa MWCO CRC membrane) were performed using BSA (69 kDa) at a pH range of between pH 4.7 and pH 10, and various ionic strength conditions (0.0037–0.15 M). Flux behaviors under various solution conditions were observed and analyzed. The FSB model for permeate flux characterization for UF processes using moderate ionic strength aqueous solutions was modified to include electrostatic contributions by adapting a modified film theory model. Comparison of the experimental results with the resulting modified FSB model calculations showed that the model provides good prediction and characterization of the pressure-dependent permeate flux behaviors of BSA UF when electrostatic effects are considered.

Research highlights▶ A modified free-solvent based (FSB) osmotic pressure model characterizes BSA UF. ▶ Model uses a modified film theory to account for electrostatic contributions. ▶ Comparison of the experimental results showed good prediction and characterization.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 366, Issues 1–2, 1 January 2011, Pages 184–191
نویسندگان
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