Organic liquid mobility induced by smoldering remediation

Kinsman, L., Torero, J. L. and Gerhard, J. I. (2017) Organic liquid mobility induced by smoldering remediation. Journal of Hazardous Materials, 325 101-112. doi:10.1016/j.jhazmat.2016.11.049

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Author Kinsman, L.
Torero, J. L.
Gerhard, J. I.
Title Organic liquid mobility induced by smoldering remediation
Journal name Journal of Hazardous Materials   Check publisher's open access policy
ISSN 1873-3336
0304-3894
Publication date 2017-03-05
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.jhazmat.2016.11.049
Open Access Status File (Author Post-print)
Volume 325
Start page 101
End page 112
Total pages 12
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Subject 2305 Environmental Engineering
2304 Environmental Chemistry
2311 Waste Management and Disposal
2310 Pollution
2307 Health, Toxicology and Mutagenesis
Abstract Laboratory column experiments plus analytical and numerical modeling together suggest that, under certain conditions, downward organic liquid mobilization can occur and impact smoldering behavior. This applies for organic liquids mixed with inert sand subjected to smoldering as thermal treatment. The observed effects include increased peak temperatures (here by up to 35%) and increased treatment times (here by up to 30%). Downward organic liquid migration occurs when (i) injected Darcy air flux is less than a threshold value (here less than 3 cm/s), (ii) treatment systems are tall (here 90 cm, not 30 cm), and (iii) the organic liquid is temperature-sensitive (viscosity less than 0.01 Pa s at 150 °C). The developed analytical equation provides the applied air flux that can negate the downwards organic liquid gradient required for migration. Smoldering behavior is demonstrated to adjust to liquid migration and thereby still destroy all the organic waste in the system. Smoldering is a relatively new, energy-efficient thermal treatment for organic liquid waste and these results are important for designing field applications of smoldering treatment.
Keyword Liquid migration
Organic liquid
Organic waste
Remediation
Smoldering
Thermal treatment
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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