Effect of K2CO3 doping on CO2 sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment

doi:10.1016/j.cjche.2022.07.025

Chinese Journal of Chemical Engineering ›› 2022, Vol. 51 ›› Issue (11): 10-20.DOI: 10.1016/j.cjche.2022.07.025

Effect of K₂CO₃ doping on CO₂ sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment

Junya Wang¹, Kai Chen¹, Yi Wang¹, Jiuming Lei², Abdullah Alsubaie³, Ping Ning¹, Shikun Wen¹, Taiping Zhang^1,2, Abdulraheem S.A. Almalki⁴, A. Alhadhrami⁴, Zhiping Lin⁵, Hassan Algadi⁶, Zhanhu Guo⁷

1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2. Ecological Environment Monitoring Station, Linxiang Branch, Lincang Municipal Bureau of Ecology and Environment, Lincang 677000, China;
3. Department of Physics, College of Khurma, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
4. Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
5. Integrated Composites Laboratory (ICL), Department of Chemical and Bimolecular Engineering, University of Tennessee, Knoxville, TN 37996, United States;
6. Department of Electrical Engineering, Faculty of Engineering, Najran University, P.O. Box 1988, Najran 11001, Saudi Arabia;
7. College of Materials Science and Engineering, Taizhou University, Taizhou 318000, China

Received:2022-04-13 Revised:2022-07-20 Online:2023-01-18 Published:2022-11-18
Contact: Shikun Wen,E-mail:shikunwen@kust.edu.cn;Taiping Zhang,E-mail:810849646@qq.com;Zhanhu Guo,E-mail:nanomaterials2000@gmail.com
Supported by:
The authors are very grateful to the financial support from National Natural Science Foundation of China (21868015, 51802135), and the Applied Basic Research Programs of Yunnan Province (140520210057), and Taif University Researchers Supporting Project number (TURSP-2020/163), Taif University, Taif, Saudi Arabia.

Effect of K₂CO₃ doping on CO₂ sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment

1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2. Ecological Environment Monitoring Station, Linxiang Branch, Lincang Municipal Bureau of Ecology and Environment, Lincang 677000, China;
3. Department of Physics, College of Khurma, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
4. Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
5. Integrated Composites Laboratory (ICL), Department of Chemical and Bimolecular Engineering, University of Tennessee, Knoxville, TN 37996, United States;
6. Department of Electrical Engineering, Faculty of Engineering, Najran University, P.O. Box 1988, Najran 11001, Saudi Arabia;
7. College of Materials Science and Engineering, Taizhou University, Taizhou 318000, China

通讯作者: Shikun Wen,E-mail:shikunwen@kust.edu.cn;Taiping Zhang,E-mail:810849646@qq.com;Zhanhu Guo,E-mail:nanomaterials2000@gmail.com
基金资助:
The authors are very grateful to the financial support from National Natural Science Foundation of China (21868015, 51802135), and the Applied Basic Research Programs of Yunnan Province (140520210057), and Taif University Researchers Supporting Project number (TURSP-2020/163), Taif University, Taif, Saudi Arabia.

Abstract

Abstract: In this paper, a low-cost and environmental-friendly leaching agent citric acid (C₆H₈O₇) was used to treat the sediment of Dianchi Lake (SDL) to synthesize lithium silicate (Li₄SiO₄) based CO₂ sorbent. The results were compared with that treated with strong acid. Moreover, the effects of preparation conditions, sorption conditions and desorption conditions on the CO₂ sorption performance of prepared Li₄SiO₄ were systematically studied. Under optimal conditions, the Li₄SiO₄ sorbent was successfully synthesized and its CO₂ sorption capacity reached 31.37% (mass), which is much higher than that synthesized from SDL treated with strong acid. It is speculated that the presence of some elements after C₆H₈O₇ treatment may promote the sorption of synthetic Li₄SiO₄ to CO₂. In addition, after doping with K₂CO₃, the CO₂ uptake increases from the original 12.02% and 22.12% to 23.96% and 32.41% (mass) under the 20% and 50% CO₂ partial pressure, respectively. More importantly, after doping K₂CO₃, the synthesized Li₄SiO₄ has a high cyclic stability under the low CO₂ partial pressure.

Key words: CO₂ sorbents, Li₄SiO₄, Sediment, Citric acid, Doped with K₂CO₃

摘要： In this paper, a low-cost and environmental-friendly leaching agent citric acid (C₆H₈O₇) was used to treat the sediment of Dianchi Lake (SDL) to synthesize lithium silicate (Li₄SiO₄) based CO₂ sorbent. The results were compared with that treated with strong acid. Moreover, the effects of preparation conditions, sorption conditions and desorption conditions on the CO₂ sorption performance of prepared Li₄SiO₄ were systematically studied. Under optimal conditions, the Li₄SiO₄ sorbent was successfully synthesized and its CO₂ sorption capacity reached 31.37% (mass), which is much higher than that synthesized from SDL treated with strong acid. It is speculated that the presence of some elements after C₆H₈O₇ treatment may promote the sorption of synthetic Li₄SiO₄ to CO₂. In addition, after doping with K₂CO₃, the CO₂ uptake increases from the original 12.02% and 22.12% to 23.96% and 32.41% (mass) under the 20% and 50% CO₂ partial pressure, respectively. More importantly, after doping K₂CO₃, the synthesized Li₄SiO₄ has a high cyclic stability under the low CO₂ partial pressure.

关键词: CO₂ sorbents, Li₄SiO₄, Sediment, Citric acid, Doped with K₂CO₃

Junya Wang, Kai Chen, Yi Wang, Jiuming Lei, Abdullah Alsubaie, Ping Ning, Shikun Wen, Taiping Zhang, Abdulraheem S.A. Almalki, A. Alhadhrami, Zhiping Lin, Hassan Algadi, Zhanhu Guo. Effect of K₂CO₃ doping on CO₂ sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment[J]. Chinese Journal of Chemical Engineering, 2022, 51(11): 10-20.

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Effect of K₂CO₃ doping on CO₂ sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment

Effect of K₂CO₃ doping on CO₂ sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment

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