Next Article in Journal
Time-Space-Quantity-Energy Coupling in Intelligent Caving Mines: A Review of Ore-Flow Control and Mining-Processing Coordination
Previous Article in Journal
Aeromagnetic Characterisation of the Breccia Zone at Machanur, Dharwar Craton
Previous Article in Special Issue
Comparative Study on the Differential Adsorption Mechanisms of Typical Light/Heavy Rare Earth Ions by Kaolinite and Halloysite
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Minerals
Volume 16
Issue 6
10.3390/min16060582
minerals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

S-[2-(Hydroxyamino)-2-Oxoethyl]-O-Octyl-Dithiocarbonate Ester (EHAOX): Performance and Adsorption Mechanism

by
Yue Zhou
1,
Jiaxiang Li
1,
Hongli Fan
1,2,3,*,
Zhilong Li
1,
Yuesheng Gao
4,*,
Tian Lin
1,
Haiyan Tang
1,
Tingting Wang
3 and
Wei Sun
2
1
School of Mining and Coal Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
2
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
3
Baotou Research Institute of Rare Earths, Baotou 014030, China
4
Department of Chemical Engineering, Michigan Technological University, Houghton, MI 49931, USA
*
Authors to whom correspondence should be addressed.
Minerals 2026, 16(6), 582; https://doi.org/10.3390/min16060582 (registering DOI)
Submission received: 20 April 2026 / Revised: 21 May 2026 / Accepted: 24 May 2026 / Published: 28 May 2026
(This article belongs to the Collection Advanced Extraction and Recovery of Rare Earth Elements)
Browse Figure
Versions Notes

Abstract

This study explores the interfacial interactions between a novel collector, S-[2-(hydroxyamino)-2-oxoethyl]-O-octyl-dithiocarbonate ester (EHAOX), and bastnaesite mineral surfaces during selective flotation. Compared to conventional octylhydroxamic acid (OHA), EHAOX demonstrated superior recovery, achieving an over 40% absolute increase in recovery compared to octylhydroxamic acid (OHA) at the same collector concentration (1 × 10−5 mol/L) and pH 8.0, and selectivity for bastnaesite, attributed to its optimized hydrophobicity (supported by CLogP calculations). Mechanistic studies via zeta potential, UV/vis spectroscopy, and FTIR revealed the formation of a complex composite via chemisorption between EHAOX and Ce3+ sites on the bastnaesite surface, with coordination occurring through the sulfur (N-C(=S)) and oxygen (-C(=O)N-OH) functional groups. This selective adsorption minimized EHAOX’s affinity for calcite, highlighting its potential for tailoring composite mineral separation processes. The findings advance the design of functionalized collectors for rare-earth mineral enrichment, with implications for composite material processing in resource recovery.
Keywords: EHAOX; OHA; bastnaesite; flotation; mechanism EHAOX; OHA; bastnaesite; flotation; mechanism
Graphical Abstract

Share and Cite

MDPI and ACS Style

Zhou, Y.; Li, J.; Fan, H.; Li, Z.; Gao, Y.; Lin, T.; Tang, H.; Wang, T.; Sun, W. S-[2-(Hydroxyamino)-2-Oxoethyl]-O-Octyl-Dithiocarbonate Ester (EHAOX): Performance and Adsorption Mechanism. Minerals 2026, 16, 582. https://doi.org/10.3390/min16060582

AMA Style

Zhou Y, Li J, Fan H, Li Z, Gao Y, Lin T, Tang H, Wang T, Sun W. S-[2-(Hydroxyamino)-2-Oxoethyl]-O-Octyl-Dithiocarbonate Ester (EHAOX): Performance and Adsorption Mechanism. Minerals. 2026; 16(6):582. https://doi.org/10.3390/min16060582

Chicago/Turabian Style

Zhou, Yue, Jiaxiang Li, Hongli Fan, Zhilong Li, Yuesheng Gao, Tian Lin, Haiyan Tang, Tingting Wang, and Wei Sun. 2026. "S-[2-(Hydroxyamino)-2-Oxoethyl]-O-Octyl-Dithiocarbonate Ester (EHAOX): Performance and Adsorption Mechanism" Minerals 16, no. 6: 582. https://doi.org/10.3390/min16060582

APA Style

Zhou, Y., Li, J., Fan, H., Li, Z., Gao, Y., Lin, T., Tang, H., Wang, T., & Sun, W. (2026). S-[2-(Hydroxyamino)-2-Oxoethyl]-O-Octyl-Dithiocarbonate Ester (EHAOX): Performance and Adsorption Mechanism. Minerals, 16(6), 582. https://doi.org/10.3390/min16060582

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop