Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions
Abstract In Brazil, bentonite clays are not naturally sodic and it is an industrial practice the sodium additivation, since sodium ion expands their lamellae allowing a larger amount of water to penetrate. The objective was to analyze the influences of the use of sodium carbonate on the clay during...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Cerâmica
2019-12-01
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| Series: | Cerâmica |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132020000100081&tlng=en |
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| author | I. C. G. Morais I. A. Silva B. M. A. B. Buriti J. V. Fernandes D. S. Silva G. A. Neves H. S. Ferreira |
| author_facet | I. C. G. Morais I. A. Silva B. M. A. B. Buriti J. V. Fernandes D. S. Silva G. A. Neves H. S. Ferreira |
| author_sort | I. C. G. Morais |
| collection | DOAJ |
| description | Abstract In Brazil, bentonite clays are not naturally sodic and it is an industrial practice the sodium additivation, since sodium ion expands their lamellae allowing a larger amount of water to penetrate. The objective was to analyze the influences of the use of sodium carbonate on the clay during the additivation process, the moisture content and the cure time on cation exchange and viscosity of bentonite clay dispersions for water-based drilling fluids, since there is a shortage of studies on this subject. Newly discovered bentonite clays in Paraíba State, Brazil, were chemically, physically and mineralogically characterized and were additivated with sodium carbonate in aqueous solution (process 1) or in powder form (process 2). Samples with 25% to 60% of moisture (dry basis) were prepared and submitted to cure times of 7 to 45 days. Process 1, as expected, showed better results of cation exchange capacity, viscosity and filtrate volume. The ideal cure time was 15 days. After this period there was a reversal of the cation exchange reactions. |
| first_indexed | 2024-04-11T15:21:11Z |
| format | Article |
| id | doaj.art-5cf3b94c0067481b9f0053505caef39b |
| institution | Directory Open Access Journal |
| issn | 1678-4553 |
| language | English |
| last_indexed | 2024-04-11T15:21:11Z |
| publishDate | 2019-12-01 |
| publisher | Associação Brasileira de Cerâmica |
| record_format | Article |
| series | Cerâmica |
| spelling | doaj.art-5cf3b94c0067481b9f0053505caef39b2022-12-22T04:16:22ZengAssociação Brasileira de CerâmicaCerâmica1678-45532019-12-0166377818710.1590/0366-69132020663772695Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersionsI. C. G. MoraisI. A. SilvaB. M. A. B. Buritihttps://orcid.org/0000-0002-6787-4525J. V. FernandesD. S. SilvaG. A. NevesH. S. FerreiraAbstract In Brazil, bentonite clays are not naturally sodic and it is an industrial practice the sodium additivation, since sodium ion expands their lamellae allowing a larger amount of water to penetrate. The objective was to analyze the influences of the use of sodium carbonate on the clay during the additivation process, the moisture content and the cure time on cation exchange and viscosity of bentonite clay dispersions for water-based drilling fluids, since there is a shortage of studies on this subject. Newly discovered bentonite clays in Paraíba State, Brazil, were chemically, physically and mineralogically characterized and were additivated with sodium carbonate in aqueous solution (process 1) or in powder form (process 2). Samples with 25% to 60% of moisture (dry basis) were prepared and submitted to cure times of 7 to 45 days. Process 1, as expected, showed better results of cation exchange capacity, viscosity and filtrate volume. The ideal cure time was 15 days. After this period there was a reversal of the cation exchange reactions.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132020000100081&tlng=enbentonite claysadditivationcation exchange capacityviscositydrilling fluids |
| spellingShingle | I. C. G. Morais I. A. Silva B. M. A. B. Buriti J. V. Fernandes D. S. Silva G. A. Neves H. S. Ferreira Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions Cerâmica bentonite clays additivation cation exchange capacity viscosity drilling fluids |
| title | Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions |
| title_full | Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions |
| title_fullStr | Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions |
| title_full_unstemmed | Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions |
| title_short | Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions |
| title_sort | influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions |
| topic | bentonite clays additivation cation exchange capacity viscosity drilling fluids |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132020000100081&tlng=en |
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