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

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

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

Full Length Article | Updated：2026-01-06

- Effect of K₂CO₃ doping on CO₂ sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment
- Chinese Journal of Chemical Engineering Vol. 51, Issue 11, Pages: 10-20(2022)
- Affiliations：
  
  1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology,Kunming,China,650500
  2. Ecological Environment Monitoring Station, Linxiang Branch, Lincang Municipal Bureau of Ecology and Environment,Lincang,China,677000
  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,TN,Knoxville,United States,37996
  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,China,318000
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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摘要

Abstract

In this paper

a low-cost and environmental-friendly leaching agent citric acid (C

) was used to treat the sediment of Dianchi Lake (SDL) to synthesize lithium silicate (Li

SiO

) based CO

sorbent. The results were compared with that treated with strong acid. Moreover

the effects of preparation conditions

sorption conditions and desorption conditions on the CO

sorption performance of prepared Li

SiO

were systematically studied. Under optimal conditions

the Li

SiO

sorbent was successfully synthesized and its CO

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 C

treatment may promote the sorption of synthetic Li

SiO

to CO

. In addition

after doping with K

the CO

uptake increases from the original 12.02% and 22.12% to 23.96% and 32.41% (mass) under the 20% and 50% CO

partial

pressure

respectively. More importantly

after doping K

the synthesized Li

SiO

has a high cyclic stability under the low CO

partial pressure.

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