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Organic liquid mobility induced by smoldering remediation

Kinsman, L; Torero, JL; Gerhard, JI; (2017) Organic liquid mobility induced by smoldering remediation. Journal of Hazardous Materials , 325 pp. 101-112. 10.1016/j.jhazmat.2016.11.049. Green open access

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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.

Type: Article
Title: Organic liquid mobility induced by smoldering remediation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jhazmat.2016.11.049
Publisher version: https://doi.org/10.1016/j.jhazmat.2016.11.049
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Remediation, Smoldering, Organic liquid, Organic waste, Liquid migration, Thermal treatment
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10069569
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