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Issue 7, 2020
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The application of ultrasonic treatment and a bis(2-ethylhexyl)sulfosuccinate-based novel ionic liquid for cadmium extraction

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Abstract

A hydrophobic functional ionic liquid (IL) [N4444]AOT based on bis(2-ethylhexyl)sulfosuccinate anions was designed and synthesized for cadmium extraction. To study the characteristics of [N4444]AOT, Fourier transform infrared (FTIR) spectroscopy, hydrogen nuclear magnetic resonance spectroscopy (1H NMR), and thermogravimetric analysis were used. The extraction ability of [N4444]AOT towards Cd under ultrasonic conditions was also investigated. The results showed that more than 95.08% of Cd in a water solution could be extracted with [N4444]AOT under ultrasonic conditions. The results of FTIR and 1H NMR analyses showed that Cd mainly coordinated with the S–O bond provided by [N4444]AOT during extraction. The extraction of Cd from soil with [N4444]AOT was high and reached the value of 62.57%. Furthermore, [N4444]AOT could extract some stable and bound Cd species from the soil, which existed in a weakly acidic, reducible or oxidizable state. The application of [N4444]AOT significantly decreased the bioavailability of Cd in the soil. [N4444]AOT can be a good agent for Cd-contaminated soil remediation without changing the soil properties.

Graphical abstract: The application of ultrasonic treatment and a bis(2-ethylhexyl)sulfosuccinate-based novel ionic liquid for cadmium extraction

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Supplementary files

Article information


Submitted
12 Dec 2019
Accepted
20 Jan 2020
First published
20 Jan 2020

New J. Chem., 2020,44, 3045-3051
Article type
Paper

The application of ultrasonic treatment and a bis(2-ethylhexyl)sulfosuccinate-based novel ionic liquid for cadmium extraction

J. Guo, Y. Li, X. Ren, H. Xu, T. Wei, H. Jia, L. Hua, Y. Zhang and Y. Li, New J. Chem., 2020, 44, 3045
DOI: 10.1039/C9NJ06081B

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