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Article: Application of a simplified mathematical model to estimate the effect of forced aeration on composting in a closed system

TitleApplication of a simplified mathematical model to estimate the effect of forced aeration on composting in a closed system
Authors
KeywordsComposting
Forced aeration
Numerical analysis
Temperature
Airflow rate
Issue Date2012
PublisherElsevier Ltd. The Journal's web site is located at https://www.journals.elsevier.com/waste-management/
Citation
Waste Management, 2012, v. 32 n. 11, p. 2037-2045 How to Cite?
AbstractThe aeration rate is a key process control parameter in the forced aeration composting process because it greatly affects different physico-chemical parameters such as temperature and moisture content, and indirectly influences the biological degradation rate. In this study, the effect of a constant airflow rate on vertical temperature distribution and organic waste degradation in the composting mass is analyzed using a previously developed mathematical model of the composting process. The model was applied to analyze the effect of two different ambient conditions, namely, hot and cold ambient condition, and four different airflow rates such as 1.5, 3.0, 4.5, and 6.0 m3 m−2 h−1, respectively, on the temperature distribution and organic waste degradation in a given waste mixture. The typical waste mixture had 59% moisture content and 96% volatile solids, however, the proportion could be varied as required. The results suggested that the model could be efficiently used to analyze composting under variable ambient and operating conditions. A lower airflow rate around 1.5–3.0 m3 m−2 h−1 was found to be suitable for cold ambient condition while a higher airflow rate around 4.5–6.0 m3 m−2 h−1 was preferable for hot ambient condition. The engineered way of application of this model is flexible which allows the changes in any input parameters within the realistic range. It can be widely used for conceptual process design, studies on the effect of ambient conditions, optimization studies in existing composting plants, and process control.
Persistent Identifierhttp://hdl.handle.net/10722/279382
ISSN
2017 Impact Factor: 4.723
2015 SCImago Journal Rankings: 1.764
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorBari, QH-
dc.contributor.authorKoenig, A-
dc.date.accessioned2019-11-01T03:08:35Z-
dc.date.available2019-11-01T03:08:35Z-
dc.date.issued2012-
dc.identifier.citationWaste Management, 2012, v. 32 n. 11, p. 2037-2045-
dc.identifier.issn0956-053X-
dc.identifier.urihttp://hdl.handle.net/10722/279382-
dc.description.abstractThe aeration rate is a key process control parameter in the forced aeration composting process because it greatly affects different physico-chemical parameters such as temperature and moisture content, and indirectly influences the biological degradation rate. In this study, the effect of a constant airflow rate on vertical temperature distribution and organic waste degradation in the composting mass is analyzed using a previously developed mathematical model of the composting process. The model was applied to analyze the effect of two different ambient conditions, namely, hot and cold ambient condition, and four different airflow rates such as 1.5, 3.0, 4.5, and 6.0 m3 m−2 h−1, respectively, on the temperature distribution and organic waste degradation in a given waste mixture. The typical waste mixture had 59% moisture content and 96% volatile solids, however, the proportion could be varied as required. The results suggested that the model could be efficiently used to analyze composting under variable ambient and operating conditions. A lower airflow rate around 1.5–3.0 m3 m−2 h−1 was found to be suitable for cold ambient condition while a higher airflow rate around 4.5–6.0 m3 m−2 h−1 was preferable for hot ambient condition. The engineered way of application of this model is flexible which allows the changes in any input parameters within the realistic range. It can be widely used for conceptual process design, studies on the effect of ambient conditions, optimization studies in existing composting plants, and process control.-
dc.languageeng-
dc.publisherElsevier Ltd. The Journal's web site is located at https://www.journals.elsevier.com/waste-management/-
dc.relation.ispartofWaste Management-
dc.subjectComposting-
dc.subjectForced aeration-
dc.subjectNumerical analysis-
dc.subjectTemperature-
dc.subjectAirflow rate-
dc.titleApplication of a simplified mathematical model to estimate the effect of forced aeration on composting in a closed system-
dc.typeArticle-
dc.identifier.emailKoenig, A: kalbert@hkucc.hku.hk-
dc.identifier.authorityKoenig, A=rp00125-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.wasman.2012.01.014-
dc.identifier.pmid22361594-
dc.identifier.scopuseid_2-s2.0-84867635078-
dc.identifier.volume32-
dc.identifier.issue11-
dc.identifier.spage2037-
dc.identifier.epage2045-
dc.identifier.isiWOS:000310949000005-
dc.publisher.placeUnited Kingdom-

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