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Use of Electrodialysis to Bentonitics Clays Dispersions

Published online by Cambridge University Press:  11 February 2011

L. V. Amorim ,
C. M. Gomes ,
F. L. H. Silva ,
K. B. França ,
H. L. Lira  and
H. C. Ferreira
L. V. Amorim
Affiliation:
Chemical Engineering Department/Federal University of Campina Grande, Av. Aprígio Veloso, 82 ZIP CODE: 58109–970 Campina Grande, PBheber@dema.ufpb.br
C. M. Gomes
Affiliation:
Chemical Engineering Department/Federal University of Campina Grande, Av. Aprígio Veloso, 82 ZIP CODE: 58109–970 Campina Grande, PBheber@dema.ufpb.br
F. L. H. Silva
Affiliation:
Materials Engineering Department/Federal University of Campina Grande, Av. Aprígio Veloso, 82 ZIP CODE: 58109–970 Campina Grande, PBheber@dema.ufpb.br
K. B. França
Affiliation:
Materials Engineering Department/Federal University of Campina Grande, Av. Aprígio Veloso, 82 ZIP CODE: 58109–970 Campina Grande, PBheber@dema.ufpb.br
H. L. Lira
Affiliation:
Chemical Engineering Department/Federal University of Campina Grande, Av. Aprígio Veloso, 82 ZIP CODE: 58109–970 Campina Grande, PBheber@dema.ufpb.br
H. C. Ferreira
Affiliation:
Chemical Engineering Department/Federal University of Campina Grande, Av. Aprígio Veloso, 82 ZIP CODE: 58109–970 Campina Grande, PBheber@dema.ufpb.br
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Abstract

The aim of this work is to study the uses of electrodialysis to bentonitics clays dispersions from Boa Vista City, PB, to improve the rheological properties. The dispersions were prepared with natural clay in the concentration of 4.86% w/w and submitted to electrodialysis process by using cationic polymeric membranes. Following, the dispersions were treated with Na2CO3. After cure, it was evaluated apparent (AV) and plastic (PV) viscosity and water loss (WL). The tests was setting up according to 22 experimental design, with three measures in the central point, to estimate the best applied voltage and time and the influence on AV, PV and WL. The results showed that variables (voltage and time) have significant influence on the rheological properties. It was observed an increase in PV and decrease in WL, with values that satisfy the specifications for water based drilling fluids.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 752: Symposium AA – Membranes–Preparation, Properties and Applications , 2002 , AA8.18
Copyright
Copyright © Materials Research Society 2003

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References

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