Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model
In this work, we developed an extended surface complexation model (SCM) that successfully fits all tested ζ-potential data (63 in total) of synthetic calcite and three natural carbonates (Iceland spar, Indiana limestone, “SME” rock from a Middle East field) in brines with divalent ions in a wide ran...
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Online Access: | https://hdl.handle.net/1911/106215 https://doi.org/10.1021/acs.energyfuels.8b03896 |
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ftriceuniv:oai:scholarship.rice.edu:1911/106215 2023-05-15T16:51:49+02:00 Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model Song, Jin Rezaee, Sara Zhang, Leilei Zhang, Zhuqing Puerto, Maura Wani, Omar B. Vargas, Francisco Alhassan, Saeed Biswal, Sibani L. Hirasaki, George J. 2019 application/pdf https://hdl.handle.net/1911/106215 https://doi.org/10.1021/acs.energyfuels.8b03896 eng eng American Chemical Society Song, Jin, Rezaee, Sara, Zhang, Leilei, et al. "Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model." Energy Fuels, 33, no. 2 (2019) American Chemical Society: 957-967. https://doi.org/10.1021/acs.energyfuels.8b03896. https://hdl.handle.net/1911/106215 https://doi.org/10.1021/acs.energyfuels.8b03896 This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society. Journal article Text post-print 2019 ftriceuniv https://doi.org/10.1021/acs.energyfuels.8b03896 2022-08-09T20:39:24Z In this work, we developed an extended surface complexation model (SCM) that successfully fits all tested ζ-potential data (63 in total) of synthetic calcite and three natural carbonates (Iceland spar, Indiana limestone, “SME” rock from a Middle East field) in brines with divalent ions in a wide range of ionic strengths (0.001–0.5 M). To develop this extended model, our previous reported SCM is first optimized by incorporating the ζ-potential of synthetic calcite in a wide range of ionic strength (0.001–0.5 M) along with previously published data for parameter refitting. The model is then applied to predict the surface charge of synthetic calcite in concentrated solutions up to 5 M NaCl to reveal the role of high salinity in calcite wettability. Eventually, the model is extended to fit the ζ-potential of natural carbonates by adding surface reactions for impurities such as silica and organic-based carboxylic acids. The coverage of the organic impurities is found to be essential for explaining why the ζ-potential of natural carbonates is more negative compared to that of synthetic calcite. Naphthenic acid (assumed to have one carboxylic group) and humic/fulvic acid (assumed to have six carboxylic groups) are tested in the model calculation as possible sources of surface impurities to demonstrate the effect of the number of carboxylic groups in the acid molecule. Finally, the effect of a humic acid pretreatment on the ζ-potential of synthetic calcite is investigated experimentally to verify the assumption that absorbed organic impurities on the calcite surface contribute significantly to a more negatively charged natural carbonate surface when compared to that of pure calcite surfaces. Article in Journal/Newspaper Iceland Rice University: Digital Scholarship Archive Energy & Fuels 33 2 957 967 |
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Rice University: Digital Scholarship Archive |
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ftriceuniv |
language |
English |
description |
In this work, we developed an extended surface complexation model (SCM) that successfully fits all tested ζ-potential data (63 in total) of synthetic calcite and three natural carbonates (Iceland spar, Indiana limestone, “SME” rock from a Middle East field) in brines with divalent ions in a wide range of ionic strengths (0.001–0.5 M). To develop this extended model, our previous reported SCM is first optimized by incorporating the ζ-potential of synthetic calcite in a wide range of ionic strength (0.001–0.5 M) along with previously published data for parameter refitting. The model is then applied to predict the surface charge of synthetic calcite in concentrated solutions up to 5 M NaCl to reveal the role of high salinity in calcite wettability. Eventually, the model is extended to fit the ζ-potential of natural carbonates by adding surface reactions for impurities such as silica and organic-based carboxylic acids. The coverage of the organic impurities is found to be essential for explaining why the ζ-potential of natural carbonates is more negative compared to that of synthetic calcite. Naphthenic acid (assumed to have one carboxylic group) and humic/fulvic acid (assumed to have six carboxylic groups) are tested in the model calculation as possible sources of surface impurities to demonstrate the effect of the number of carboxylic groups in the acid molecule. Finally, the effect of a humic acid pretreatment on the ζ-potential of synthetic calcite is investigated experimentally to verify the assumption that absorbed organic impurities on the calcite surface contribute significantly to a more negatively charged natural carbonate surface when compared to that of pure calcite surfaces. |
format |
Article in Journal/Newspaper |
author |
Song, Jin Rezaee, Sara Zhang, Leilei Zhang, Zhuqing Puerto, Maura Wani, Omar B. Vargas, Francisco Alhassan, Saeed Biswal, Sibani L. Hirasaki, George J. |
spellingShingle |
Song, Jin Rezaee, Sara Zhang, Leilei Zhang, Zhuqing Puerto, Maura Wani, Omar B. Vargas, Francisco Alhassan, Saeed Biswal, Sibani L. Hirasaki, George J. Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model |
author_facet |
Song, Jin Rezaee, Sara Zhang, Leilei Zhang, Zhuqing Puerto, Maura Wani, Omar B. Vargas, Francisco Alhassan, Saeed Biswal, Sibani L. Hirasaki, George J. |
author_sort |
Song, Jin |
title |
Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model |
title_short |
Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model |
title_full |
Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model |
title_fullStr |
Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model |
title_full_unstemmed |
Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model |
title_sort |
characterizing the influence of organic carboxylic acids and inorganic silica impurities on the surface charge of natural carbonates using an extended surface complexation model |
publisher |
American Chemical Society |
publishDate |
2019 |
url |
https://hdl.handle.net/1911/106215 https://doi.org/10.1021/acs.energyfuels.8b03896 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Song, Jin, Rezaee, Sara, Zhang, Leilei, et al. "Characterizing the Influence of Organic Carboxylic Acids and Inorganic Silica Impurities on the Surface Charge of Natural Carbonates Using an Extended Surface Complexation Model." Energy Fuels, 33, no. 2 (2019) American Chemical Society: 957-967. https://doi.org/10.1021/acs.energyfuels.8b03896. https://hdl.handle.net/1911/106215 https://doi.org/10.1021/acs.energyfuels.8b03896 |
op_rights |
This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society. |
op_doi |
https://doi.org/10.1021/acs.energyfuels.8b03896 |
container_title |
Energy & Fuels |
container_volume |
33 |
container_issue |
2 |
container_start_page |
957 |
op_container_end_page |
967 |
_version_ |
1766041903172681728 |