Volume 4, Issue 6, December 2019, Page: 132-135
Modification of Waste-derived CaO Using Organic Acids for CO2 Capture
Azra Nawar, US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, Pakistan
Majid Ali, US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, Pakistan
Rashid Khan, School of Environment, Tsinghua University, Beijing, China
Mariam Mahmood, US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, Pakistan
Received: Nov. 2, 2019;       Published: Jan. 6, 2020
DOI: 10.11648/j.ijeee.20190406.13      View  414      Downloads  100
Calcium looping is a widely used CO2 capture technology, where calcium oxide (CaO) is used as a sorbent. However, it has many drawbacks such as expensive raw material and reduction in sorbent capacity over multiple cycles. This study is aimed at developing economic as well as environment friendly sorbents for CO2 capturing. For this purpose, chicken eggshells were collected from household municipal waste as a CaO sorbent for CO2 capture. The eggshell sorbent was characterized using different techniques such as SEM-EDS, XRD and TGA. Three different organic acids were used to improve the conversion of eggshell sorbents i.e., lactic, oxalic and tartaric acid. The results showed that one out of three acids i.e., lactic acid (ES LA-10%) showed improved conversion and stability over a period of 20 cycles as compared to other acids. In terms of CaO conversion ES LA-10% displayed the maximum performance of 47.8% and had improved cyclic stability during 20 cycles. Hence, this study showed that modifying sorbent (eggshells) by using acid is a better sorbent in comparison with other natural and synthetic sorbent, therefore reducing waste and cost simultaneously.
Eggshell, Organic Acids, CaO Based Sorbent, CO2 Capture
To cite this article
Azra Nawar, Majid Ali, Rashid Khan, Mariam Mahmood, Modification of Waste-derived CaO Using Organic Acids for CO2 Capture, International Journal of Economy, Energy and Environment. Vol. 4, No. 6, 2019, pp. 132-135. doi: 10.11648/j.ijeee.20190406.13
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Poortinga, W., et al., Climate change perceptions and their individual-level determinants: A cross-European analysis. Global Environmental Change, 2019. 55: p. 25-35.
Ridha, F. N., et al., Assessment of limestone treatment with organic acids for CO2 capture in Ca-looping cycles. Fuel Processing Technology, 2013. 116: p. 284-291.
Chen, J., L. Duan, and Z. Sun, Accurate Control of Cage-Like CaO Hollow Microspheres for Enhanced CO2 Capture in Calcium Looping via a Template-Assisted Synthesis Approach. Environmental Science & Technology, 2019. 53 (4): p. 2249-2259.
Azimi, B., et al., Multicycle CO2 capture activity and fluidizability of Al-based synthesized CaO sorbents. Chemical Engineering Journal, 2019. 358: p. 679-690.
Jiang, B., et al., An environment-friendly process for limestone calcination with CO2 looping and recovery. Journal of Cleaner Production, 2019. 240: p. 118147.
Teixeira, P., et al., Enhancement of sintering resistance of CaO-based sorbents using industrial waste resources for Ca-looping in the cement industry. Separation and Purification Technology, 2020. 235: p. 116190.
Pi, S., et al., Investigation of Y2O3/MgO-modified extrusion–spheronized CaO-based pellets for high-temperature CO2 capture. Asia-Pacific Journal of Chemical Engineering, 2019. 0 (0): p. e2366.
Hu, Y., et al., Structurally improved CaO-based sorbent by organic acids for high temperature CO2 capture. Fuel, 2016. 167: p. 17-24.
Ridha, F. N., et al., Post-combustion CO2 capture by formic acid-modified CaO-based sorbents. International Journal of Greenhouse Gas Control, 2013. 16: p. 21-28.
Sun, R., et al., Enhancement of CO2 capture capacity by modifying limestone with propionic acid. Powder Technology, 2013. 233: p. 8-14.
Zhao, M., et al., Zirconia incorporated calcium looping absorbents with superior sintering resistance for carbon dioxide capture from in situ or ex situ processes. Sustainable Energy & Fuels, 2018. 2 (12): p. 2733-2741.
Yin, X., et al., Biodiesel production from soybean oil deodorizer distillate usingcalcined duck eggshell as catalyst. Energy Conversion and Management, 2016. 112: p. 199-207.
Li, Y., et al., Modified CaO-based sorbent looping cycle for CO2 mitigation. Fuel, 2009. 88 (4): p. 697-704.
Ridha, F. N., et al., Pelletized CaO-based sorbents treated with organic acids for enhanced CO2 capture in Ca-looping cycles. International Journal of Greenhouse Gas Control, 2013. 17: p. 357-365.
Lin, K. H., et al., Acidic Treatment of CaO-Based Materials for Medium-High Temperature CO2 Capture. Key Engineering Materials, 2015. 656-657: p. 18-22.
Li, Y.-j., et al., Cyclic calcination/carbonation looping of dolomite modified with acetic acid for CO2 capture. Fuel Processing Technology, 2008. 89 (12): p. 1461-1469.
Sacia, E. R., et al., Synthesis and Regeneration of Sustainable CaO Sorbents from Chicken Eggshells for Enhanced Carbon Dioxide Capture. ACS Sustainable Chemistry & Engineering, 2013. 1 (8): p. 903-909.
Li, Y., et al., CO2 capture efficiency and energy requirement analysis of power plant using modified calcium-based sorbent looping cycle. Energy, 2011. 36 (3): p. 1590-1598.
Ni, C., et al., Facile recovery of acetic acid from waste acids of electronic industry via a partial neutralization pretreatment (PNP) – Distillation strategy. Separation and Purification Technology, 2014. 132: p. 23-26.
Browse journals by subject