Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting
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 occup...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/20/5451 |
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| author | Sylwia Stegenta-Dąbrowska Karolina Sobieraj Jacek A. Koziel Jerzy Bieniek Andrzej Białowiec |
| author_facet | Sylwia Stegenta-Dąbrowska Karolina Sobieraj Jacek A. Koziel Jerzy Bieniek Andrzej Białowiec |
| author_sort | Sylwia Stegenta-Dąbrowska |
| collection | DOAJ |
| description | 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, O<sub>2</sub>, and CO<sub>2</sub> every 12 h.CO production and <i>k</i> 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 (<i>k</i>) 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. |
| first_indexed | 2024-03-10T15:30:32Z |
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| id | doaj.art-63f764ba9d5e44a4a3d339d794f07fd3 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T15:30:32Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-63f764ba9d5e44a4a3d339d794f07fd32023-11-20T17:40:53ZengMDPI AGEnergies1996-10732020-10-011320545110.3390/en13205451Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste CompostingSylwia Stegenta-Dąbrowska0Karolina Sobieraj1Jacek A. Koziel2Jerzy Bieniek3Andrzej Białowiec4Faculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 37a Chełmońskiego Str., 51-630 Wrocław, PolandFaculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 37a Chełmońskiego Str., 51-630 Wrocław, PolandDepartment of Agricultural and Biosystems Engineering, Iowa State University, 605 Bissell Road, Ames, IA 50011, USAFaculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 37a Chełmońskiego Str., 51-630 Wrocław, PolandFaculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 37a Chełmońskiego Str., 51-630 Wrocław, PolandKnowledge 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, O<sub>2</sub>, and CO<sub>2</sub> every 12 h.CO production and <i>k</i> 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 (<i>k</i>) 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.https://www.mdpi.com/1996-1073/13/20/5451waste managementaerobic digestionbiowastecarbon monoxidegreen chemistrybiorenewables |
| spellingShingle | Sylwia Stegenta-Dąbrowska Karolina Sobieraj Jacek A. Koziel Jerzy Bieniek Andrzej Białowiec Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting Energies waste management aerobic digestion biowaste carbon monoxide green chemistry biorenewables |
| title | Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting |
| title_full | Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting |
| title_fullStr | Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting |
| title_full_unstemmed | Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting |
| title_short | Kinetics of Biotic and Abiotic CO Production during the Initial Phase of Biowaste Composting |
| title_sort | kinetics of biotic and abiotic co production during the initial phase of biowaste composting |
| topic | waste management aerobic digestion biowaste carbon monoxide green chemistry biorenewables |
| url | https://www.mdpi.com/1996-1073/13/20/5451 |
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