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REMEDIATION OF PETROLEUM IMPACTED SOILS WITH ELECTRON BEAM IRRADIATION
Lassalle, J., D. Staack, T. Thompson, M. Martinez, H.R. Damarla, P. Bireta, G. Sabadell, at al.
ICARST 2017: International Conference on Applications of Radiation Science and Technology, 24-28 April, 2017, Vienna, Austria: Programme & Book of Abstracts. 21 slides, 2017

Heavy hydrocarbons (HH, C12-C40) pose a significant remediation challenge because they are recalcitrant and relatively immobile in soils. Electron beam technology has the potential to both crack and polymerize hydrocarbons at lower temperatures than similar energetic methods for HH remediation, such as thermal desorption and pyrolysis, but the technology still must be proven fast, efficient, and economical at large scales to be commercially viable. The present research has several objectives: show reduction in mass of heavy hydrocarbons in soil for proof of concept; assess impact of testing parameters (e.g., radiation dose); and design an experimental setup to evaluate soil treatment, in both batch and continuous configurations. Samples with initial HH contamination ranging from 2-10% (w/w) were irradiated with an 18 kW, 10 MeV RF LINAC in various configurations, including stationary and moving soil containers for irradiation of samples ranging in size from 100 g to 3 kg. Tests showed effective HH mass reduction, which resulted in TPH reduction (<0:1%, satisfying environmental regulations) in both batch and continuous treatments. Temperature-programmed desorption and oxidation showed evidence of both volatilization and char formation as the means of heavy hydrocarbon mass reduction.
Slides: https://media.superevent.com/documents/20170428/dea6e37b14694b2b820a45bba6f3d185/d.-staack.pdf



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