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Combustion Characteristics of Municipal Solid Waste Bales
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Pakistan Institute of Engineering and Applied Sciences. (Environmental Science and Engineering Group)ORCID iD: 0000-0002-0021-5971
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.ORCID iD: 0000-0002-1903-760X
SP Technical Research Institute of Sweden. (Fire Technology)
SP Technical Research Institute of Sweden.
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2015 (English)In: Fire technology, ISSN 0015-2684, E-ISSN 1572-8099, Vol. 5, no 1, p. 109-127Article in journal (Refereed) Published
Abstract [en]

Combustion behaviour of municipal solid waste bales is a rarely studied topic hitherto. However, there is dire need to devote research on the topic because baling as a storage methodology is getting popular among waste management companies and fire episodes in such storage sites can have devastating economic, environmental and social implications. In this study, thickness of low density polyethylene (LDPE) plastic sheets (12 layers, 6 layers and no layer) and type of ignition source (pilot ignition, thermal radiation) were investigated to see their effect on combustion behaviour of bales. In total eleven tests with a single bale in each test were performed. It has been found that the bales not wrapped with LDPE plastic sheets may pose higher hazards for adjacently stored material to catch fire as the value of maximum heat release rate observed for them was higher than those wrapped with LDPE plastic sheets. Furthermore, it has been found that LDPE plastic wrapping do not contribute significantly to the combustion of bales when exposed only to thermal radiation from an adjacent fire. However, it plays a significant role in ignition of bales in case exposed to a pilot flame ignition source. Molten LDPE plastic trapped between the adjacently stored bales was found to be another important factor influencing the combustion of bales.

Place, publisher, year, edition, pages
2015. Vol. 5, no 1, p. 109-127
National Category
Environmental Sciences
Research subject
Environmental Science, Environmental technology
Identifiers
URN: urn:nbn:se:lnu:diva-30878DOI: 10.1007/s10694-013-0362-5ISI: 000348185900009Scopus ID: 2-s2.0-84921698977OAI: oai:DiVA.org:lnu-30878DiVA, id: diva2:671600
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Risk of spontaneous fires at temporary storages sites for organic material, waste fuels and recyclables: Quantification and mitigation
Open this publication in new window or tab >>Risk of spontaneous fires at temporary storages sites for organic material, waste fuels and recyclables: Quantification and mitigation
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Economic and environmental constraints have created increasing demand for (material and energy recovery) and recycling of waste generated from households, commercial and industrial activities. A wide variety of materials waiting for sorting, recovery, recycling and disposal are stored at temporary storage sites (TSS) where physical, biotic and abiotic processes can lead the stored material to spontaneous ignition. Spontaneous fires at TSS are associated with severe social health economic and environmental implications.

The objective of the present thesis was to access, quantify and mitigate the risk of spontaneous fires at temporary storage sites. It was found that during the period from 2000 to 2010, spontaneous fires have caused losses of about 49 million SEK (about 5 million Euros) to the Swedish waste and recycling industry. A comparison of two groups of waste operators (non-seasonal storage sites at private companies and seasonal storage sites at municipality owned companies) showed that the number of fire incidents per storage site was higher for the former one.

Furthermore, it was found that there is a need to improve the behavior of environmental managers related to safety issues as a group of managers was found to be under the influence of optimism, attribution and availability biases. The managers under the influence of optimism bias preferred to follow low cost risk averting strategies and fire incidents were more frequently reported at their storage sites.

The ArcGIS spatial analysis using Boolean and Weighted Linear Combination approach and open burn/open detonation model was used to provide the screening level guidelines for siting new storage sites with a due consideration given to potential off-site consequences of spontaneous fires on downwind population. Furthermore, experiments were conducted to investigate the combustion characteristics of MSW bales. The data suggested that the unwrapped bales might pose higher hazards for adjacently stored material to catch fire than bales wrapped with low density polyethylene (LDPE) plastic sheets. For future, interdisciplinary research with focus on technical solutions (e.g. development of performance based design using fire simulations and methods for early detection and extinction of fires) and economic, political and organizational solutions that ensure risk of spontaneous fires not to be trivialized is recommended.

Keywords: temporary storage, risk of fires, spontaneous ignition, biofuels, recyclables, waste fuels

Place, publisher, year, edition, pages
Växjö: Linnaeus University Press, 2014. p. 82
Series
Linnaeus University Dissertations ; 160/2014
Keywords
temporary storage, risk of fires, spontaneous ignition, biofuels, recyclables, waste fuels
National Category
Environmental Management
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-31583 (URN)978-91-87427-71-8 (ISBN)
Public defence
2014-02-28, Fullriggaren (B-135), Landgången 3, Kalmar, 09:30 (English)
Opponent
Supervisors
Available from: 2014-02-25 Created: 2014-01-22 Last updated: 2014-05-09Bibliographically approved

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Ibrahim, Muhammad AsimHogland, William

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