化学
胺气处理
二氧化碳
氢氧化钙
钙
解吸
氢氧化锂
碳酸钙
无机化学
再生(生物学)
化学工程
氢氧化物
热脱附
有机化学
吸附
离子交换
离子
工程类
细胞生物学
生物
作者
Ji Min Kang,Arti Murnandari,Myung-Joong Youn,Wonhee Lee,Ki Tae Park,Young Eun Kim,Hak Joo Kim,Sang-Yoon Kang,Jung Hyun Lee,Soon Kwan Jeong
标识
DOI:10.1016/j.cej.2017.10.136
摘要
To avoid the main disadvantage of the carbon dioxide (CO2) capture process, namely the large amount of energy consumed to regenerate the amine absorbent using current thermal methods, chemical regeneration has been introduced as a novel method to regenerate the amine. Chemical regeneration deploys a swing in the pH of the amine absorbent rather than the swing in temperature of typical thermal regeneration procedures, and hence reduces the regeneration energy. Here we tested calcium chloride (CaCl2) and calcium hydroxide (Ca(OH)2) as a calcium source for CO2 desorption and a pH swing agent for amine regeneration. After desorbing from the amine, CO2 in our procedures reacted with Ca2+ to form calcium carbonate (CaCO3). Forming precipitated CaCO3 is a permanent way to sequester CO2. Since carbonates have a low energy level compared to CO2, we expect the developed method to be an economical and energy-efficient process.
科研通智能强力驱动
Strongly Powered by AbleSci AI