Using absorbance as a measure of turbidity in highly caustic solutions
This note shows that the dissolution of kaolin and its subsequent re-crystallization as DSP can be monitored using a simple UV–vis method that measures the turbidity of the system. The method is shown to be accurate, reproducible and sensitive. The dissolution of kaolin can be accurately determined...
| Main Authors: | , , |
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| Format: | Journal Article |
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Elsevier
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/5896 |
| _version_ | 1848744923893858304 |
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| author | Radomirovic, Tomoko Smith, P. Jones, Franca |
| author_facet | Radomirovic, Tomoko Smith, P. Jones, Franca |
| author_sort | Radomirovic, Tomoko |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This note shows that the dissolution of kaolin and its subsequent re-crystallization as DSP can be monitored using a simple UV–vis method that measures the turbidity of the system. The method is shown to be accurate, reproducible and sensitive. The dissolution of kaolin can be accurately determined by way of a solids calibration curve and this is supported by simultaneous measurements of the dissolved silicate by an inductively coupled plasma (ICP) technique. Additionally, turbidity is often used to measure induction times of nucleation thus the method can monitor dissolution and nucleation simultaneously. It must be remembered, however, that turbidity will show different behaviour to ICP when phenomena such as settling and aggregation occur thus these processes must be considered when interpreting data. Finally, the size limit of the turbidimetric technique must be determined as this, too, can influence the interpretation of data. |
| first_indexed | 2025-11-14T06:09:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-5896 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:09:11Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-58962017-09-13T14:40:29Z Using absorbance as a measure of turbidity in highly caustic solutions Radomirovic, Tomoko Smith, P. Jones, Franca Desilication products Bayer crystallization dissolution kaolin This note shows that the dissolution of kaolin and its subsequent re-crystallization as DSP can be monitored using a simple UV–vis method that measures the turbidity of the system. The method is shown to be accurate, reproducible and sensitive. The dissolution of kaolin can be accurately determined by way of a solids calibration curve and this is supported by simultaneous measurements of the dissolved silicate by an inductively coupled plasma (ICP) technique. Additionally, turbidity is often used to measure induction times of nucleation thus the method can monitor dissolution and nucleation simultaneously. It must be remembered, however, that turbidity will show different behaviour to ICP when phenomena such as settling and aggregation occur thus these processes must be considered when interpreting data. Finally, the size limit of the turbidimetric technique must be determined as this, too, can influence the interpretation of data. 2013 Journal Article http://hdl.handle.net/20.500.11937/5896 10.1016/j.minpro.2012.11.005 Elsevier fulltext |
| spellingShingle | Desilication products Bayer crystallization dissolution kaolin Radomirovic, Tomoko Smith, P. Jones, Franca Using absorbance as a measure of turbidity in highly caustic solutions |
| title | Using absorbance as a measure of turbidity in highly caustic solutions |
| title_full | Using absorbance as a measure of turbidity in highly caustic solutions |
| title_fullStr | Using absorbance as a measure of turbidity in highly caustic solutions |
| title_full_unstemmed | Using absorbance as a measure of turbidity in highly caustic solutions |
| title_short | Using absorbance as a measure of turbidity in highly caustic solutions |
| title_sort | using absorbance as a measure of turbidity in highly caustic solutions |
| topic | Desilication products Bayer crystallization dissolution kaolin |
| url | http://hdl.handle.net/20.500.11937/5896 |