The viability of Mechanical Biological Treatments (MBT) is a widely discussed topic regarding Municipal Solid Waste (MSW) management in the world. Bio-drying is a MBT process that shows its best performances when the waste has a high moisture content. The purpose of bio-drying is the exploitation of the exothermic bacterial reactions for the evaporation of the highest part of the moisture in the waste with the lowest conversion of organic matter. As side effects the waste stream increases its calorific value and its composition is partially stabilized. This paper presents a simple model based on bio-drying mass and energy balances. The model takes into account the heat release from biochemical oxidation of the volatile matter, the evaporation of moisture, the heating of process air and the thermal losses, as well as changes in the chemical composition of the volatile matter that remains in the waste. Some very simple rules are identified to allow a rapid evaluation of the process performances.
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19th Annual North American Waste-to-Energy Conference
May 16–18, 2011
Lancaster, Pennsylvania, USA
Conference Sponsors:
- Materials and Energy Recovery Division
ISBN:
978-0-7918-5457-0
PROCEEDINGS PAPER
A Model for Mass and Energy Balances of Bio-Drying Available to Purchase
Federico Vigano`,
Federico Vigano`
Politecnico di Milano, Piacenza, Italy
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Stefano Consonni,
Stefano Consonni
Politecnico di Milano, Piacenza, Italy
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Marco Ragazzi,
Marco Ragazzi
Universita` degli Studi di Trento, Trento, Italy
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Elena Cristina Rada
Elena Cristina Rada
Universita` degli Studi di Trento, Trento, Italy
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Federico Vigano`
Politecnico di Milano, Piacenza, Italy
Stefano Consonni
Politecnico di Milano, Piacenza, Italy
Marco Ragazzi
Universita` degli Studi di Trento, Trento, Italy
Elena Cristina Rada
Universita` degli Studi di Trento, Trento, Italy
Paper No:
NAWTEC19-5457, pp. 63-70; 8 pages
Published Online:
August 30, 2011
Citation
Vigano`, F, Consonni, S, Ragazzi, M, & Rada, EC. "A Model for Mass and Energy Balances of Bio-Drying." Proceedings of the 19th Annual North American Waste-to-Energy Conference. 19th Annual North American Waste-to-Energy Conference. Lancaster, Pennsylvania, USA. May 16–18, 2011. pp. 63-70. ASME. https://doi.org/10.1115/NAWTEC19-5457
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