Universität zu Köln

Brueck, Felix, Froehlich, Christine, Mansfeldt, Tim ORCID: 0000-0002-7557-6827 and Weigand, Harald (2018). A fast and simple method to monitor carbonation of MSWI bottom ash under static and dynamic conditions. Waste Manage., 78. S. 588 - 595. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 0956-053X

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Abstract

Accelerated carbonation may be employed to improve the leaching behaviour and the geotechnical properties of MSWI bottom ash (BA). Here we report on a novel method to monitor and evaluate the progress of carbonation in both static and dynamic reactor systems. The method is based on following the pressure drop in the gas phase induced by the CO2-uptake of BA and was benchmarked against carbonate contents as measured by thermogravimetry. Laboratory results demonstrated the serviceability and reproducibility of the method. Complementary logging of relative humidity and temperature showed constant moisture conditions and self -heating induced by the exothermal carbonation reaction, respectively. Under dynamic conditions BA carbonation was higher than in the static reactor. Consistently, the self-heating was more pronounced. After a reaction time of 120 min the pressure records indicated a CO2-uptake of 1.5 g CO2/100 g BA (static tests) and of 2.6 g CO2/100 g BA (dynamic tests). The proposed method is suited to study carbonation processes at minimum analytical expense and integrates over the small-scale heterogeneity of BA. (C) 2018 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Brueck, Felix UNSPECIFIED UNSPECIFIED UNSPECIFIED Froehlich, Christine UNSPECIFIED UNSPECIFIED UNSPECIFIED Mansfeldt, Tim UNSPECIFIED orcid.org/0000-0002-7557-6827 UNSPECIFIED Weigand, Harald UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-177664
DOI:	10.1016/j.wasman.2018.06.042
Journal or Publication Title:	Waste Manage.
Volume:	78
Page Range:	S. 588 - 595
Date:	2018
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	0956-053X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Geosciences > Geographisches Institut
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ACCELERATED CARBONATION; DIOXIDE SEQUESTRATION; CO2; PERSPECTIVES; LANDFILL; RESIDUES; VIEW Multiple languages Engineering, Environmental; Environmental Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17766