吸附剂
二氧化碳
烟气
巴(单位)
纳米
材料科学
二氧化碳去除
碳纤维
化学工程
地球大气中的二氧化碳
二氧化碳去除
废物管理
碳捕获和储存(时间表)
温室气体
环境科学
化学
复合材料
有机化学
吸附
气象学
工程类
气候变化
物理
复合数
生物
生态学
作者
Wala A. Algozeeb,Paul E Savas,Zhe Yuan,Zhe Wang,Carter Kittrell,Jacklyn N. Hall,Weiyin Chen,Praveen Bollini,James M. Tour
出处
期刊:ACS Nano
[American Chemical Society]
日期:2022-04-05
卷期号:16 (5): 7284-7290
被引量:29
标识
DOI:10.1021/acsnano.2c00955
摘要
Plastic waste (PW) and increasing atmospheric carbon dioxide (CO2) levels are among the top environmental concerns presently facing humankind. With an ambitious 2050 zero-CO2 emissions goal, there is a demand for economical CO2 capture routes. Here we show that the thermal treatment of PW in the presence of potassium acetate yields an effective carbon sorbent with pores width of 0.7-1.4 nm for CO2 capture. The PW to carbon sorbent process works with single or mixed streams of polyolefin plastics. The CO2 capacity of the sorbent at 25 °C is 17.0 ± 1.1 wt % (3.80 ± 0.25 mmol g-1) at 1 bar and 5.0 ± 0.6 wt % (1.13 ± 0.13 mmol g-1) at 0.15 bar, and it regenerates upon reaching 75 ± 5 °C. The CO2 capture cost from flue gas via this technology is estimated to be <$21 ton-1 CO2, much lower than competing CO2 capture technologies. Hence, this PW-derived carbon material should find utility in the capture of CO2 from point sources of high CO2 emissions while providing a use for otherwise deleterious PW.
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