The role of phosphonate speciation on the inhibition of barium sulfate precipitation
The inhibition of barium sulfate precipitation in the presence of phosphonate containing molecules was investigated experimentally and speciation curves were used to elucidate the interactions involved. Inhibition of precipitation was found to be pH dependent and loss of inhibition was observed at b...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Elsevier Science
2003
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| Online Access: | http://hdl.handle.net/20.500.11937/43549 |
| _version_ | 1848756726983032832 |
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| author | Jones, Franca Stanley, A. Oliveira, Allan Rohl, Andrew Reyhani, Manijeh Parkinson, Gordon Ogden, Mark |
| author_facet | Jones, Franca Stanley, A. Oliveira, Allan Rohl, Andrew Reyhani, Manijeh Parkinson, Gordon Ogden, Mark |
| author_sort | Jones, Franca |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The inhibition of barium sulfate precipitation in the presence of phosphonate containing molecules was investigated experimentally and speciation curves were used to elucidate the interactions involved. Inhibition of precipitation was found to be pH dependent and loss of inhibition was observed at both very high and low pHs. Maximum inhibition for all the inhibitor molecules occurred at pH 8. While speciation curves showed that inhibition could be improved by the presence of 2 or more fully de-protonated phosphonate groups (for pure aminophosphonates) on the molecule at pH 8, at pH 12 inhibition was insensitive to the number of de- protonated phosphonate groups. It is, therefore, suggested that surface charge repulsion affects inhibition at very high pH. For molecules which are not pure aminophosphonates, stereochemistry as well as functional groups and their ionisation state appear to play a significant role in inhibition at 3<pH8. |
| first_indexed | 2025-11-14T09:16:47Z |
| format | Journal Article |
| id | curtin-20.500.11937-43549 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:16:47Z |
| publishDate | 2003 |
| publisher | Elsevier Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-435492017-09-13T15:59:41Z The role of phosphonate speciation on the inhibition of barium sulfate precipitation Jones, Franca Stanley, A. Oliveira, Allan Rohl, Andrew Reyhani, Manijeh Parkinson, Gordon Ogden, Mark crystal growth phosphonate barium sulfate Scale The inhibition of barium sulfate precipitation in the presence of phosphonate containing molecules was investigated experimentally and speciation curves were used to elucidate the interactions involved. Inhibition of precipitation was found to be pH dependent and loss of inhibition was observed at both very high and low pHs. Maximum inhibition for all the inhibitor molecules occurred at pH 8. While speciation curves showed that inhibition could be improved by the presence of 2 or more fully de-protonated phosphonate groups (for pure aminophosphonates) on the molecule at pH 8, at pH 12 inhibition was insensitive to the number of de- protonated phosphonate groups. It is, therefore, suggested that surface charge repulsion affects inhibition at very high pH. For molecules which are not pure aminophosphonates, stereochemistry as well as functional groups and their ionisation state appear to play a significant role in inhibition at 3<pH8. 2003 Journal Article http://hdl.handle.net/20.500.11937/43549 10.1016/S0022-0248(02)02271-6 Elsevier Science fulltext |
| spellingShingle | crystal growth phosphonate barium sulfate Scale Jones, Franca Stanley, A. Oliveira, Allan Rohl, Andrew Reyhani, Manijeh Parkinson, Gordon Ogden, Mark The role of phosphonate speciation on the inhibition of barium sulfate precipitation |
| title | The role of phosphonate speciation on the inhibition of barium sulfate precipitation |
| title_full | The role of phosphonate speciation on the inhibition of barium sulfate precipitation |
| title_fullStr | The role of phosphonate speciation on the inhibition of barium sulfate precipitation |
| title_full_unstemmed | The role of phosphonate speciation on the inhibition of barium sulfate precipitation |
| title_short | The role of phosphonate speciation on the inhibition of barium sulfate precipitation |
| title_sort | role of phosphonate speciation on the inhibition of barium sulfate precipitation |
| topic | crystal growth phosphonate barium sulfate Scale |
| url | http://hdl.handle.net/20.500.11937/43549 |