University of Oulu

Wan, H., Hu, X., Luukkanen, S., Qu, J., Zhang, C., Xue, J. ... Bu, X. (2022). Effect of the oxygen-containing functional group on the adsorption of hydrocarbon oily collectors on coal surfaces. Physicochemical Problems of Mineral Processing, 58(4), 149937. https://doi.org/10.37190/ppmp/149937

Effect of the oxygen-containing functional group on the adsorption of hydrocarbon oily collectors on coal surfaces

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Author: Wan, He1; Hu, Xianglin1; Luukkanen, Saija2;
Organizations: 1School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
2Oulu Mining School, University of Oulu, Oulu, FI-90014, Finland
3College of Resource and Civil Engineering, Northeastern University, Shenyang, 110819, China
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe202301102148
Language: English
Published: Politechnika Wroclawska Oficyna Wydawnicza, 2022
Publish Date: 2023-01-10
Description:

Abstract

The oxygen-containing functional groups (OCFG) on the coal surface affect the adsorption effect of hydrocarbon oily collectors (HOC). An investigation of the interaction between the HOC and OCFG in the absence and presence of water is conducive to understanding the effect of OCFG type on the adsorption of HOC on the coal surface. In this paper, FTIR analysis was used to analyze the OCFG type of coal surface. The adsorption behavior of HOC on different OCFG surfaces was investigated using molecular dynamics simulation. The results indicated the presence of OCFG such as -OH, -COOH, -C=O, and -COCH₃ on the coal surface. In conditions without water, the effect of OCFG on HOC adsorption capability follows the order -COOH > -C=O > -OH > -COCH₃. In an aqueous solution, the effect of OCFG on HOC adsorption capability follows the order -C=O>-COCH₃>-OH>-COOH. Moreover, the hydrophilicity of OCFG is the key factor that affects the adsorption effect of HOC. In other words, the adsorption effect of HOC on the coal surface in an aqueous solution does not depend on the strength of the interaction between the OCFG and HOC in the absence of water, but on the hydrophilicity of the OCFG. The -COOH and -OH on the coal surface are not conducive to the adsorption of HOC onto the coal surface. Masking the -COOH and -OH of the coal surface is beneficial in improving the coal flotation performance with HOC as a collector.

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Series: Physicochemical problems of mineral processing
ISSN: 1643-1049
ISSN-E: 2084-4735
ISSN-L: 1643-1049
Volume: 58
Issue: 4
Article number: 149937
DOI: 10.37190/ppmp/149937
OADOI: https://oadoi.org/10.37190/ppmp/149937
Type of Publication: A1 Journal article – refereed
Field of Science: 215 Chemical engineering
Subjects:
Funding: The authors are grateful for the financial support from the Shaanxi Provincial Department of Education Service Local Special Project (Grant No.21JC021), the China Scholarship Council (Grant No. 202008610058), the National Natural Science Foundation of China (Grant No. 52074206), the National Natural Science Foundation of China (Grant No. 51904222), the Natural Science Foundation of Qinghai Province, China (Grant No. 2021-ZJ-975Q), Anhui Province Key Research and Development Program Project (Grant No. 202104a07020012).
Copyright information: © Wroclaw University of Science and Technology. All articles in Physicochemical Problems of Mineral Processing (ISSN 1643-1049) are published in full open access.