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Article

Carbon Monoxide Formation during Aerobic Biostabilization of the Organic Fraction of Municipal Solid Waste: The Influence of Technical Parameters in a Full-Scale Treatment System

1
Institute of Agricultural Engineering, Faculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 37a Chełmońskiego Str., 51-630 Wrocław, Poland
2
School of Biosciences, Sir Martin Evans Building, Cardiff University, Museum Avenue, Cardiff CF10 3AX, UK
*
Author to whom correspondence should be addressed.
Energies 2020, 13(21), 5624; https://doi.org/10.3390/en13215624
Received: 10 September 2020 / Revised: 20 October 2020 / Accepted: 24 October 2020 / Published: 27 October 2020
(This article belongs to the Special Issue Biowaste Management)
The present study sought to investigate the formation of carbon monoxide (CO) during aerobic biostabilization (AB) of the organic fraction of municipal solid waste (OFMSW) in forced aerated piles. Understanding the factors influencing CO formation may be important not only for safety, but also for environmental and technical reasons. The objective of the study was to determine the effect of the technical parameters of the piles on the concentration of CO in the process gas during AB of the OFMSW in a full-scale waste treatment system: rate of waste aeration (from 3365 to 12,744 m3∙Mg−1), waste mass loads in the pile (from 391 to 702 Mg), thermal conditions, application of sidewalls as an element of pile bioreactor construction, concentration of O2 and CO2 in the waste piles and the duration of the process from 6 to 9 weeks. The temperature and concentration of O2, CO2, CO, CH4 were measured in each pile at weekly intervals. All six reactors provide stable thermal and aerobic conditions, but the presence of CO was observed, ranging from a few to over 2000 ppm, which demonstrated that ensuring optimum conditions for the process is not sufficient for CO to be eliminated. A moderate, non-linear rise in CO concentration was observed along with a rise in the temperature inside the reactors. Concentrations of CO were not highly correlated with those of O2 or CO2. An increase in waste mass loads increased the CO concentration in waste piles, while application of sidewalls decreased CO concentration. Increasing aeration rate had an influence on CO production, and the highest CO concentrations were noted under air flow rate 5.3 m3·Mg−1·h−1. View Full-Text
Keywords: aeration rate; aerobic biostabilization; carbon monoxide; municipal waste; organic fraction aeration rate; aerobic biostabilization; carbon monoxide; municipal waste; organic fraction
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MDPI and ACS Style

Stegenta-Dąbrowska, S.; Randerson, P.F.; Christofides, S.R.; Białowiec, A. Carbon Monoxide Formation during Aerobic Biostabilization of the Organic Fraction of Municipal Solid Waste: The Influence of Technical Parameters in a Full-Scale Treatment System. Energies 2020, 13, 5624. https://doi.org/10.3390/en13215624

AMA Style

Stegenta-Dąbrowska S, Randerson PF, Christofides SR, Białowiec A. Carbon Monoxide Formation during Aerobic Biostabilization of the Organic Fraction of Municipal Solid Waste: The Influence of Technical Parameters in a Full-Scale Treatment System. Energies. 2020; 13(21):5624. https://doi.org/10.3390/en13215624

Chicago/Turabian Style

Stegenta-Dąbrowska, Sylwia; Randerson, Peter F.; Christofides, Sarah R.; Białowiec, Andrzej. 2020. "Carbon Monoxide Formation during Aerobic Biostabilization of the Organic Fraction of Municipal Solid Waste: The Influence of Technical Parameters in a Full-Scale Treatment System" Energies 13, no. 21: 5624. https://doi.org/10.3390/en13215624

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