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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 3, 2016, pp. 793-802
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Bioline Code: st16075
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 3, 2016, pp. 793-802
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Multimedia environmental analysis of PCBs fate and transport mechanism through a case study of transformer oil leakage
Asif, Z. & Chen, Z.
Abstract
Transformer oil leakage having large quantity
of PCBs is one of the most deplorable incidents resulting in
huge negative impacts on the environment. In this paper,
two different models, i.e. CHEMCAN and the hydrocarbon
spill screening models, were applied to the case study
adapted from a real case of PCBs in transformer oil spill in
Montreal. The oil migration was examined in three
dimensions including site-specific data, soil characteristics
and hydrogeological properties. This study aims to investigate
the fate, transport and transformation rates of PCB in
the soil, the unsaturated and the saturated zones. The proposed
modelling concept helps to define the processes to be
used in characterization of soil and subsurface environment
as a receptor of transformer oil spill. This study includes
the simulation techniques for assessing the effect of PCBs
on groundwater and soil. Results from multimedia environmental
model and HSSM model verify with each other,
and both show that 92.7 % of PCBs were found in soil as
compared to groundwater. Considering decay and sorption
processes at spill location, concentration of PCBs in soil
was > 50 mg/kg. This study can serve as a basis for further
analysis and assist in selection of remediation technique.
Keywords
Hydrocarbon spill screening model; Multimedia environmental model; CHEMCAN model; Transformer oil spill
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