Imperial College London
Alternate

Professor Nilay Shah OBE FREng

Faculty of Engineering, Department of Chemical Engineering

Professor of Process Systems Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6621n.shah

 
 
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Assistant

 

Miss Jessica Baldock +44 (0)20 7594 5699

 
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Location

 

ACEX 522ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Leonzio:2022:10.1016/j.spc.2022.04.004,
author = {Leonzio, G and Mwabonje, O and Fennell, PS and Shah, N},
doi = {10.1016/j.spc.2022.04.004},
journal = {Sustainable Production and Consumption},
pages = {101--111},
title = {Environmental performance of different sorbents used for direct air capture},
url = {http://dx.doi.org/10.1016/j.spc.2022.04.004},
volume = {32},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Currently, conventional carbon dioxide (CO2) mitigation solutions may be insufficient to achieve the stringent environmental targets set for the coming decades. CO2 removal (CDR) technologies, such as direct air capture (DAC), capturing CO2 from the ambient air, are required.In this research, an independent life cycle assessment (LCA) of DAC adsorption systems based on three physisorbents (metal organic frameworks) and two chemisorbents (amine functionalized sorbents) is presented. These capture processes have been optimised by us in previous work.Results show that for the overall capture process, negative CO2 emissions are ensured by using a cellulose-based amine sorbent (cradle-to-gate) ensuring even the net removal of CO2 from the atmosphere (cradle-to-grave). Processes using physisorbents have poorer performances. Chemisorbents yield operating conditions allowing lower impacts on the environment. In 2050, these processes could reduce climate change but can generate other environmental impacts.With the aim to have better environmental performances of DAC systems, future research should be focused on improving the physical properties of sorbents such as the silica gel based amine sorbent to increase their capture capacities. If metal organic frameworks are to be used, it is necessary to drop their energy consumption (by increasing the loading) and the required mass of sorbent.
AU  - Leonzio,G
AU  - Mwabonje,O
AU  - Fennell,PS
AU  - Shah,N
DO  - 10.1016/j.spc.2022.04.004
EP  - 111
PY  - 2022///
SN  - 2352-5509
SP  - 101
TI  - Environmental performance of different sorbents used for direct air capture
T2  - Sustainable Production and Consumption
UR  - http://dx.doi.org/10.1016/j.spc.2022.04.004
UR  - https://www.sciencedirect.com/science/article/pii/S2352550922000926?via%3Dihub
UR  - http://hdl.handle.net/10044/1/96469
VL  - 32
ER  -
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