Efficient CO2 capture by a novel deep eutectic solvent through facile, one-pot synthesis with low energy consumption and feasible regeneration

被引:51
作者
Bi, Yingying [1 ,2 ]
Hu, Zhengtian [1 ,2 ]
Lin, Xingyu [1 ,2 ]
Ahmad, Naveed [1 ,2 ]
Xu, Jian [1 ,2 ]
Xu, Xia [1 ,2 ]
机构
[1] Anhui Univ Technol, Biochem Engn Res Ctr, 59 Hudong Rd, Maanshan 243002, Anhui, Peoples R China
[2] Anhui Univ Technol, Sch Chem & Chem Engn, Maanshan 243002, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
Greenhouse gas; CO2; emission; capture; Deep eutectic solvent; Solvent regeneration; CARBON-DIOXIDE CAPTURE; IONIC LIQUIDS; CHOLINE CHLORIDE; HIGH-CAPACITY; SOLUBILITY; ABSORPTION; SEPARATION; GAS;
D O I
10.1016/j.scitotenv.2019.135798
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
With steady growth on CO2 emission over the years, removal of CO2 from the environment is a critical issue in preventing global warming and climate change. Due to negligible volatility and remarkable thermal stability, ionic liquids have become potential media for CO2 capture. However, their drawbacks such as high price, toxicity and inefficient energy consumption have severely limited their applications in CO2 capture. Here, a promising deep eutectic solvent was synthesized by a one-pot method, simply mixing NH4Cl with monoethanolamine (MEA) at 30 degrees C for 30 min to form [MEAHCI][MEA] confirmed by H-1 NMR. [MEAHCI][MEA] with EG exhibits a rapid initial kinetics of CO2 absorption, around 22.5 wt% within 10 min. It also has good thermal-stability, high tolerance to water contents, economically feasibility of regeneration and robust performance in recycle. This novel capture system which can be prepared on-site is feasible for industrialization and offers an efficient, inexpensive and safe system for CO2 capture. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页数:9
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