Adsorption Kinetics and Thermodynamics of O-isopropyl-N, N-diethyl Thionocarbamate on Chalcopyrite Surfaces

ZHU Huimin; BAO Qiyu; LUO Ziting; GONG Congying; CAO Fei; SUN Desi

doi:10.13779/j.cnki.issn1001-0076.2021.02.004

2021 Vol. 41, No. 2

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ZHU Huimin, BAO Qiyu, LUO Ziting, GONG Congying, CAO Fei, SUN Desi. Adsorption Kinetics and Thermodynamics of O-isopropyl-N, N-diethyl Thionocarbamate on Chalcopyrite Surfaces[J]. Conservation and Utilization of Mineral Resources, 2021, 41(2): 23-27. doi: 10.13779/j.cnki.issn1001-0076.2021.02.004

Citation:

ZHU Huimin, BAO Qiyu, LUO Ziting, GONG Congying, CAO Fei, SUN Desi. Adsorption Kinetics and Thermodynamics of O-isopropyl-N, N-diethyl Thionocarbamate on Chalcopyrite Surfaces[J]. Conservation and Utilization of Mineral Resources, 2021, 41(2): 23-27. doi: 10.13779/j.cnki.issn1001-0076.2021.02.004

Adsorption Kinetics and Thermodynamics of O-isopropyl-N, N-diethyl Thionocarbamate on Chalcopyrite Surfaces

1.
School of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, Jiangxi, China
2.
State Key Laboratory of Mineral Processing Science and Technology, Beijing 102600, China
3.
Jiujiang University Library, Jiujiang 332005, Jiangxi, China

More Information

Corresponding author: CAO Fei, jjyz2001@163.com

Received Date: 06 March 2021

Publish Date: 25 April 2021

Abstract

Abstract

O-isopropyl-N, N-diethyl thionocarbamate (XBE) is a new collector developed by the research group, which has good flotation separation effect for copper and sulfur. In order to further study the flotation performance of XBE, the effects of stirring time, reagent concentration, pulp pH and temperature on adsorption capacity of XBE onto chalcopyrite surfaces were studied. The adsorption kinetics and thermodynamics were investigated. The results show that adsorption capacity of XBE on chalcopyrite surfaces didn't change basically when the pH was between 7 and 11. After stirring for 25 minutes, adsorption equilibrium of XBE on chalcopyrite surfaces was reached, and adsorption process conformed to the second-order reaction kinetic equation. The adsorption capacity of XBE on chalcopyrite surfaces increased with the increase of reagent concentration and temperature. The adsorption of XBE on chalcopyrite surfaces conformed to Freundlich multilayer adsorption model.
- thionocarbamate /
- chalcopyrite /
- adsorption kinetics /
- thermodynamics

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References

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