| Issue |
E3S Web Conf.
Volume 569, 2024
GeoAmericas 2024 - 5th Pan-American Conference on Geosynthetics
|
|
|---|---|---|
| Article Number | 22002 | |
| Number of page(s) | 2 | |
| Section | Mining 3 | |
| DOI | https://doi.org/10.1051/e3sconf/202456922002 | |
| Published online | 19 September 2024 | |
Ca-bentonite/polymer blends to compose GCLs for effective containment of mining leachates
Federal University of Sao Carlos, Civil Engineering Department, Washington Luis Rd., km 235, 1356590 Sao Carlos, SP, Brazil
* Corresponding author: ncorreia@ufscar.br
This study investigates the swelling potential of blends of a Brazilian sodium-activated calcium bentonite with linear structure polymers and a cross-linked structure polymer in contact with aggressive mining solutions (sodium hydroxide, calcium chloride, simulated bauxite liquor, copper tailing and gold tailing leachates). Results showed that the polymer addition contributed to the swelling of the bentonite under aggressive solutions. The effectiveness of the polymers varied with the permeant liquid and concentration. Sodium Polyacrylate and Carboxymethyl Cellulose proved the most effectiveness in bentonite swelling capacity. Research presents valuable insights into the chemical compatibility of bentonitepolymer blends when exposed to aggressive liquids.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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