| |
|
SR27 Transferência de Calor e Massa |
| |
|
Title:
|
STEADY STATE TRANSMEMBRANE FLUX OF MACROMOLECULAR SOLUTION WITH MICRO AND ULTRA-FILTRATION CONDITIONS
|
| |
|
Summary :
|
|
ABSTRACT. THIS STUDY PRESENTS RESULTS OF A MICRO AND ULTRA-FILTRATION EXPERIMENT USING THE FOOD ADDITIVE KNOWN AS GUAR GUM IN WATER SOLUTION OF 1000 PPM. THE TRANSMEMBRANE FLUX WAS DETERMINED BY A LABORATORY UNIT WHICH WAS EQUIPPED WITH A CERAMIC TUBULAR HAVING A MOLECULAR WEIGHT CUT-OFF OF 500.000 DALTONS. EXPERIMENTS WERE CONDUCTED USING AN AVERAGE TRANSMEMBRANE PRESSURE OF 300 KPA, 400 KPA AND 500 KPA FOR TANGENTIAL FLOW RATES OF 2.4; 3.5 AND 5.0 M/S IN THE TURBULENT REGIME FLOW. EXPERIMENTAL DATA FOR FOULING (GEL LAYER) AND REJECTION COEFFICIENT ARE PRESENTED, AND THE EFFECTS FROM PRESSURE CHANGES IN THE PROCESS OPTIMIZATION. THE TRANSMEMBRANE FLUX REACHES VALUES UP TO 40% LARGER IN THE RANGE OF FLOWS STUDIED. FINALLY, THE VALUES OF ELECTRIC CONDUTIVITY OF THE PERMEATE FLUX ARE INDICATING SIGNIFICANT CHANGES OF TOTAL ION CONCENTRATION IN PERMEATE AND CONCENTRATE SOLUTION.
KEYWORDS: MICROFILTRATION; ULTRAFILTRATION; GUAR GUM; MASS TRANFER
|
| |
|
Author :
|
Fontes, Sergio Rodrigues
|
| |
|
Paper View :
|
|
COBEM99
| Organizing Committee | Keynotes
| Technical
Sessions | Author
| Symposia and special sessions
| Referees |
Work
Titles | Venue
|
