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Critical Analysis of Two Respirometric Methods for Solid Substrates Based On Continuous and Semi-Continuous Aeration | OMICS International | Abstract
ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
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Research Article

Critical Analysis of Two Respirometric Methods for Solid Substrates Based On Continuous and Semi-Continuous Aeration

Rada EC*, Ragazzi M and Venturi M
Department of Civil and Environmental Engineering, University of Trento, Via Mesiano 77, I-38050 Trento, Italy
Corresponding Author : Rada EC
Department of Civil and Environmental Engineering
University of Trento, Via Mesiano 77
I-38050 Trento, Italy
Received: August 01, 2012; Accepted: October 10, 2012; Published: October 27, 2012
Citation: Rada EC, Ragazzi M, Venturi M (2012) Critical Analysis of Two Respirometric Methods for Solid Substrates Based On Continuous and Semi- Continuous Aeration. J Bioremed Biodeg 3:170. doi:10.4172/2155-6199.1000170
Copyright: © 2012 Rada EC, et al. This is an open-a ccess article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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In the sector of respirometry applied to solid waste many tools are available. Moreover, methods for assessing the oxygen consumption can be significantly different. In Italy, the sector is characterized by the adoption of dynamic approaches that are preferred to the static ones. In this paper, a comparison between the two respirometers more adopted in Italy is presented. The first one is the Costech respirometer, with continuous aeration and without temperature control. The second one is the AIR-nl respirometer, with temperature control and a semicontinuous aeration based on the principle of avoiding limiting conditions of oxygen. Results were obtained during an experimental research that involved on one hand the construction of an analytical model for evaluating the Respirometric Index (RI) for various substrates and on the other, the critical analysis of the obtained measurements. In this paper, the relationship between the output of tests conducted in parallel with two different instruments on the same samples is analyzed. Some differences between the results of the measurements and obtainable parameters (RI24) are underlined. Considerations on reference moisture, temperature role, and respirometric index calculation method allow the understanding of the characteristics of the two methods in more detail.


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