The interaction of EDTA with barium sulfate
Ethylenediaminetetraacetic acid (EDTA) is a known complexing agent that interacts with a host of cations. In this paper, various techniques are used to elucidate the mechanism of interaction between EDTA and barium sulfate surfaces. It is shown that complexation with metal ions is not sufficient to...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2007
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| Online Access: | http://hdl.handle.net/20.500.11937/35537 |
| _version_ | 1848754523615526912 |
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| author | Jones, Franca Jones, Philip Ogden, Mark Richmond, William Rohl, Andrew Saunders, M. |
| author_facet | Jones, Franca Jones, Philip Ogden, Mark Richmond, William Rohl, Andrew Saunders, M. |
| author_sort | Jones, Franca |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Ethylenediaminetetraacetic acid (EDTA) is a known complexing agent that interacts with a host of cations. In this paper, various techniques are used to elucidate the mechanism of interaction between EDTA and barium sulfate surfaces. It is shown that complexation with metal ions is not sufficient to explain the inhibition of barite crystallization but that other processes such as chemisorption must also occur. EDTA is shown to always adsorb as the mono-protonated species?suggesting that the molecule is able to lose a proton when it adsorbs at lower pH. Molecular modelling shows that the interaction of the surface barium ions with the carboxylate group is an important one. Finally, in situ turbidity measurements provide information about the mechanism of nucleation/growth modification. It is found that the EDTA molecule inhibits barium sulfate nucleation and that this could be its primary means of inhibiting precipitation of barium sulfate. |
| first_indexed | 2025-11-14T08:41:46Z |
| format | Journal Article |
| id | curtin-20.500.11937-35537 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:41:46Z |
| publishDate | 2007 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-355372017-09-13T15:55:19Z The interaction of EDTA with barium sulfate Jones, Franca Jones, Philip Ogden, Mark Richmond, William Rohl, Andrew Saunders, M. Barium sulfate Amino-carboxylates Speciation Infrared spectroscopy Molecular modelling Adsorption Inhibitors Scale Precipitation Ethylenediaminetetraacetic acid (EDTA) is a known complexing agent that interacts with a host of cations. In this paper, various techniques are used to elucidate the mechanism of interaction between EDTA and barium sulfate surfaces. It is shown that complexation with metal ions is not sufficient to explain the inhibition of barite crystallization but that other processes such as chemisorption must also occur. EDTA is shown to always adsorb as the mono-protonated species?suggesting that the molecule is able to lose a proton when it adsorbs at lower pH. Molecular modelling shows that the interaction of the surface barium ions with the carboxylate group is an important one. Finally, in situ turbidity measurements provide information about the mechanism of nucleation/growth modification. It is found that the EDTA molecule inhibits barium sulfate nucleation and that this could be its primary means of inhibiting precipitation of barium sulfate. 2007 Journal Article http://hdl.handle.net/20.500.11937/35537 10.1016/j.jcis.2007.09.005 Elsevier fulltext |
| spellingShingle | Barium sulfate Amino-carboxylates Speciation Infrared spectroscopy Molecular modelling Adsorption Inhibitors Scale Precipitation Jones, Franca Jones, Philip Ogden, Mark Richmond, William Rohl, Andrew Saunders, M. The interaction of EDTA with barium sulfate |
| title | The interaction of EDTA with barium sulfate |
| title_full | The interaction of EDTA with barium sulfate |
| title_fullStr | The interaction of EDTA with barium sulfate |
| title_full_unstemmed | The interaction of EDTA with barium sulfate |
| title_short | The interaction of EDTA with barium sulfate |
| title_sort | interaction of edta with barium sulfate |
| topic | Barium sulfate Amino-carboxylates Speciation Infrared spectroscopy Molecular modelling Adsorption Inhibitors Scale Precipitation |
| url | http://hdl.handle.net/20.500.11937/35537 |