Next Article in Journal
Rapid Processing of Abandoned Oil Palm Trunks into Sugars and Organic Acids by Sub-Critical Water
Next Article in Special Issue
Effect of Physical and Mechanical Activation on the Physicochemical Structure of Coal-Based Activated Carbons for SO2 Adsorption
Previous Article in Journal
Pelletization of Sunflower Seed Husks: Evaluating and Optimizing Energy Consumption and Physical Properties by Response Surface Methodology (RSM)
Previous Article in Special Issue
Adsorption of NO Gas Molecules on Monolayer Arsenene Doped with Al, B, S and Si: A First-Principles Study
Article

Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon

1
College of Textile Engineering, Taiyuan University of Technology, Jinzhong 030600, China
2
College of Forestry, Shanxi Agricultural University, Taigu 030801, China
3
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
4
Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China
*
Author to whom correspondence should be addressed.
Processes 2019, 7(9), 592; https://doi.org/10.3390/pr7090592
Received: 8 August 2019 / Revised: 21 August 2019 / Accepted: 28 August 2019 / Published: 3 September 2019
(This article belongs to the Special Issue Gas Capture Processes)
Low-cost activated carbons were prepared from waste polyurethane foam by physical activation with CO2 for the first time and chemical activation with Ca(OH)2, NaOH, or KOH. The activation conditions were optimized to produce microporous carbons with high CO2 adsorption capacity and CO2/N2 selectivity. The sample prepared by physical activation showed CO2/N2 selectivity of up to 24, much higher than that of chemical activation. This is mainly due to the narrower microporosity and the rich N content produced during the physical activation process. However, physical activation samples showed inferior textural properties compared to chemical activation samples and led to a lower CO2 uptake of 3.37 mmol·g−1 at 273 K. Porous carbons obtained by chemical activation showed a high CO2 uptake of 5.85 mmol·g−1 at 273 K, comparable to the optimum activated carbon materials prepared from other wastes. This is mainly attributed to large volumes of ultra-micropores (<1 nm) up to 0.212 cm3·g−1 and a high surface area of 1360 m2·g−1. Furthermore, in consideration of the presence of fewer contaminants, lower weight losses of physical activation samples, and the excellent recyclability of both physical- and chemical-activated samples, the waste polyurethane foam-based carbon materials exhibited potential application prospects in CO2 capture. View Full-Text
Keywords: waste polyurethane foam; physical activation; high selectivity; CO2 capture; ultra-micropore waste polyurethane foam; physical activation; high selectivity; CO2 capture; ultra-micropore
Show Figures

Graphical abstract

MDPI and ACS Style

Ge, C.; Lian, D.; Cui, S.; Gao, J.; Lu, J. Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon. Processes 2019, 7, 592. https://doi.org/10.3390/pr7090592

AMA Style

Ge C, Lian D, Cui S, Gao J, Lu J. Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon. Processes. 2019; 7(9):592. https://doi.org/10.3390/pr7090592

Chicago/Turabian Style

Ge, Chao, Dandan Lian, Shaopeng Cui, Jie Gao, and Jianjun Lu. 2019. "Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon" Processes 7, no. 9: 592. https://doi.org/10.3390/pr7090592

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop