Abstract
Deep eutectic solvent (DES) was applied as the solvent of iron/alcohol amine system, and the prepared iron/ethanolamine/DES system was found to be a good desulfurizer for H2S removal. The absorbents were characterized by Fourier transform infrared spectroscopy. The iron/ethanolamine/DES system showed a significantly enhanced desulfurization performance compared with DES solution of iron or alcohol amine separately. Besides, the absorbents showed relatively stable desulfurization performance, which could keep a high H2S removal efficiency in a wide temperature range from 30–90°C. The iron/ethanolamine/DES system could be recycled for at least three times. The desulfurization product was analyzed by energy dispersive spectrum and X-ray diffraction, and the desulfurization product was identified as sulfur element.
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This work was supported by funding from the National Natural Science Foundation of China (Nos.21908134, 41771348), Natural Science Foundation of Shandong Province (Nos.ZR2019BB045).
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Xinpeng Liu conceived and planned the whole work. Baohua Wang, Yahui Qiu, and Xiaole Dong carried out the experimental work. Baohua Wang and Yixin Song contributed to the analysis and interpretation of results. Qingmei Meng and Menghong Li were contributors in writing the manuscript. All authors read and approved the final manuscript.
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Liu, X., Wang, B., Qiu, Y. et al. Study on the desulfurization performance of iron/ethanolamine/deep eutectic solvent system. Environ Sci Pollut Res 28, 38026–38033 (2021). https://doi.org/10.1007/s11356-021-13487-4
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DOI: https://doi.org/10.1007/s11356-021-13487-4