Application of concrete and demolition waste as CO2 sorbent in chemical looping gasification of biomass

Moghtaderi, B, Zanganeh, J, Shah, K and Wu, H 2012, 'Application of concrete and demolition waste as CO2 sorbent in chemical looping gasification of biomass', Energy and Fuels, vol. 26, no. 4, pp. 2046-2057.


Document type: Journal Article
Collection: Journal Articles

Title Application of concrete and demolition waste as CO2 sorbent in chemical looping gasification of biomass
Author(s) Moghtaderi, B
Zanganeh, J
Shah, K
Wu, H
Year 2012
Journal name Energy and Fuels
Volume number 26
Issue number 4
Start page 2046
End page 2057
Total pages 12
Publisher American Chemical Society
Abstract This paper summarizes the results of an experimental investigation into sorbent chemical looping gasification (SCLG) of biomass for the production of high-purity hydrogen and in situ capture of the resulting CO 2. The key innovation was the use of concrete and demolition waste (CDW) as the source of CO 2 sorbent. A comprehensive series of thermogravimetric analysis (TGA) experiments was carried out over a range of temperatures between 650 and 900 °C and pressures up to 20 atm to benchmark the CO 2 capture efficiency of CDW against conventional lime-based sorbents [e.g., calcined limestone (CL) and hydrated Portland cement (HPC)]. Effects of controlling parameters, such as the Ca/C ratio, steam/carbon (S/C) ratio, steam partial pressure, and total pressure, on the gas yield, gas composition, and CO 2 capture efficiency were thoroughly examined. Experimental results confirmed that CO 2 capture efficiencies as high as 56.4% and high-grade hydrogen production can be achieved when CDW is used as a sorbent. These results combined with the high mechanical strength, durability, and low cost make CDW an attractive sorbent for chemical looping gasification of carbonaceous solid fuels, particularly biomass.
Subject Energy Generation, Conversion and Storage Engineering
Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
Chemical Engineering not elsewhere classified
DOI - identifier 10.1021/ef300145t
Copyright notice © 2012 American Chemical Society
ISSN 0887-0624
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