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- W1973132904 abstract "Abstract In this work an experimental procedure was established to assess the main engineering parameters characterizing the ultrafiltration (UF) recovery of a commercial sample of sodium alginate from model solutions, using both a laboratory-scale and a pilot-scale plant equipped with ceramic tubular UF membrane modules. Several total recycle tests were performed in the laboratory-scale plant so as to assess the effects of transmembrane pressure difference (ΔP), feed superficial velocity ( v S ) and solute concentration (cBR) in the ranges of 0.5–4.5 bar, 4–10 m/s, and 3–22 kg m−3, respectively, on the permeation flux under a constant process temperature of 50 °C. As cBR increased from approximately 3 to 7 kg m−3, the limiting permeation flux (JP∞) decreased almost linearly from 140 to 320 dm3 m−2 h−1 (depending on v S ) to about 40 dm3 m−2 h−1, the latter value being independent of v S . The change in slope of the plot JP∞-vs.-log(cBR) was shown to be due to the transition from turbulent to laminar flow. Two empirical dimensionless correlations relating the modified Sherwood, Reynolds and Schmidt numbers, valid in the laminar or turbulent flow regime, enabled prediction of the permeation flux of two independent batch mode validation tests at high and low initial feed solute concentrations to within The two empirical correlations should be suitable as design tools for further scaling-up of the UF process under study." @default.
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- W1973132904 date "2009-01-01" @default.
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- W1973132904 title "Experimental strategy to assess the main engineering parameters characterizing sodium alginate recovery from model solutions by ceramic tubular ultrafiltration membrane modules" @default.
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- W1973132904 doi "https://doi.org/10.1016/j.memsci.2008.10.046" @default.
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