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|Title:||Accumulated flux and resistances in clarification of sugarcane juice by microfiltration – impact of operational parameters|
|Author:||Ferreira, R. E.|
Cozar, C. A.
Schmidt, F. L
|Abstract:||Effects of operational parameters of microfiltration on permeate flux and individual resistances were evaluated. Assays were undertaken using ceramic membranes (pore size of 0.2 µm). Operational parameters – temperature and transmembrane pressure (TMP) – varied from 25.9 to 54.1°C, and from 1.8 to 3.2 bar, respectively. The main influence on time of processing was exerted by temperature (lowest values for highest temperatures, indicating a relationship to the viscosity). Resistance by irreversible fouling (RIF) was the most representative, while by membrane (RM) was the least. RIF was influenced by temperature and TMP, although temperature had been the most important. Reversible fouling (RRF) was also influenced by temperature and TMP, with the first presenting the highest impact. Mathematical models proposed for RIF and RRF exhibits good fit to the experimental data, respectively, 95 and 93%. Results found suggest that: higher temperatures contribute for shorter periods of processing; higher TMP contribute for higher initial fluxes; the highest contribution of RIF to the general total resistance occurred as a function of a considerable blockage of pores of membrane by suspended and colloidal particles; and models proposed for the resistances (RIF and RRF) can be applied to predict the experimental data with good accuracy|
|Editor:||Universiti Putra Malaysia/Faculty of Food Science and Technology|
|Appears in Collections:||FEA - Artigos e Outros Documentos|
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