Agricultural and Biosystems Engineering Publications
Campus Units
Agricultural and Biosystems Engineering, Civil, Construction and Environmental Engineering, Food Science and Human Nutrition, Environmental Science, Toxicology
Document Type
Article
Publication Version
Published Version
Publication Date
10-19-2020
Journal or Book Title
Energies
Volume
13
Issue
20
First Page
5451
Research Focus Area(s)
Biological and Process Engineering and Technology
DOI
10.3390/en13205451
Abstract
Knowledge of kinetic parameters of CO production during biowaste composting is significantly important for the prediction of its course and estimation of total gas quantity. This allows increasing the control of the process, to minimize its negative impact on the environment and to protect the occupational safety of employees exposed to CO in the biowaste composting plant. For the first time, a full study of the influence of temperature and biowaste sterilization on the kinetics of CO production is presented. The lab-scale experiments used a mixture of green waste, dairy cattle manure, and sawdust in two variants: sterilized and non-sterilized samples. The process was carried out in controlled temperature reactors with measuring the concentrations of CO, O2, and CO2 every 12 h.CO production and k value increased with temperature. However, higher CO production was observed in biotic conditions between 10~50 °C, suggesting the biotic CO formation and 1st-order kinetics. The abiotic (thermochemical) process was more efficiently generating CO above 50 °C, described with a 0-order kinetic model. Additionally, the rate constant (k) value of CO production under biotic conditions was increasing up to a temperature of 60 °C, above which a slight decrease in CO production rate was observed at 70 °C. The presented results are the basis for further studies focused on the feasibility of (1) the mitigation and (2) valorization of CO production during the biowaste biostabilization are warranted.
Access
Open
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright Owner
The Author(s)
Copyright Date
2020
Language
en
File Format
application/pdf
Recommended Citation
Stegenta-Dabrowska, Sylwia; Sobieraj, Karolina; Koziel, Jacek A.; Bieniek, Jerzy; and Białowiec, Andrzej, "Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting" (2020). Agricultural and Biosystems Engineering Publications. 1165.
https://lib.dr.iastate.edu/abe_eng_pubs/1165
Included in
Agriculture Commons, Bioresource and Agricultural Engineering Commons, Energy Systems Commons
Comments
This article is published as Stegenta-Dąbrowska, Sylwia, Karolina Sobieraj, Jacek A. Koziel, Jerzy Bieniek, and Andrzej Białowiec. "Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting." Energies 13, no. 20 (2020): 5451. DOI: 10.3390/en13205451. Posted with permission.