Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression
The combined effect of dissolved ions and water temperature on the adsorption of a xanthate collector on chalcopyrite and pentlandite was investigated using multiple linear regression. Cationic species improved the adsorption of the collector on sulphide minerals through xanthate adsorption activati...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/10/9/733 |
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| author | Ngoni Mhonde Nora Schreithofer Kirsten Corin Mikko Mäkelä |
| author_facet | Ngoni Mhonde Nora Schreithofer Kirsten Corin Mikko Mäkelä |
| author_sort | Ngoni Mhonde |
| collection | DOAJ |
| description | The combined effect of dissolved ions and water temperature on the adsorption of a xanthate collector on chalcopyrite and pentlandite was investigated using multiple linear regression. Cationic species improved the adsorption of the collector on sulphide minerals through xanthate adsorption activation. Thiosulphate ions generally had a negative effect on collector adsorption, and the interaction of thiosulphate ions and cations effectively reduced collector adsorption on the sulphide minerals. With regards to temperature variation caused by seasonal variation, this study suggests that temperature can influence the adsorption of collectors in the flotation process and this should be approached on a case by case basis as it seems to differ with the type of mineral under investigation. These fundamental results prompt a discussion on how complex water matrices can affect interactions of reagents and sulphide minerals at the solid–liquid interface and the possible effect on flotation performance. |
| first_indexed | 2024-03-10T17:10:17Z |
| format | Article |
| id | doaj.art-9503c99672694e8ba58f44f398dcad6f |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T17:10:17Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-9503c99672694e8ba58f44f398dcad6f2023-11-20T10:41:42ZengMDPI AGMinerals2075-163X2020-08-0110973310.3390/min10090733Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear RegressionNgoni Mhonde0Nora Schreithofer1Kirsten Corin2Mikko Mäkelä3Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FIN-00076 Aalto, FinlandDepartment of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FIN-00076 Aalto, FinlandCentre for Minerals Research, Chemical Engineering Department, University of Cape Town, Rondebosch, Cape Town 7701, South AfricaVTT Technical Research Centre of Finland Ltd., FI-02044 Espoo, FinlandThe combined effect of dissolved ions and water temperature on the adsorption of a xanthate collector on chalcopyrite and pentlandite was investigated using multiple linear regression. Cationic species improved the adsorption of the collector on sulphide minerals through xanthate adsorption activation. Thiosulphate ions generally had a negative effect on collector adsorption, and the interaction of thiosulphate ions and cations effectively reduced collector adsorption on the sulphide minerals. With regards to temperature variation caused by seasonal variation, this study suggests that temperature can influence the adsorption of collectors in the flotation process and this should be approached on a case by case basis as it seems to differ with the type of mineral under investigation. These fundamental results prompt a discussion on how complex water matrices can affect interactions of reagents and sulphide minerals at the solid–liquid interface and the possible effect on flotation performance.https://www.mdpi.com/2075-163X/10/9/733pentlanditechalcopyriteadsorptionmultiple linear regressiontemperaturepassivation |
| spellingShingle | Ngoni Mhonde Nora Schreithofer Kirsten Corin Mikko Mäkelä Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression Minerals pentlandite chalcopyrite adsorption multiple linear regression temperature passivation |
| title | Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression |
| title_full | Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression |
| title_fullStr | Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression |
| title_full_unstemmed | Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression |
| title_short | Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression |
| title_sort | assessing the combined effect of water temperature and complex water matrices on xanthate adsorption using multiple linear regression |
| topic | pentlandite chalcopyrite adsorption multiple linear regression temperature passivation |
| url | https://www.mdpi.com/2075-163X/10/9/733 |
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