alexa Investigation of polychlorinated biphenyl removal from contaminated soil using microwave-generated steam.
Geology & Earth Science

Geology & Earth Science

Oil & Gas Research

Author(s): Di P, Chang DP, Di P, Chang DP, Di P, Chang DP, Di P, Chang DP

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Abstract A feasibility study of polychlorinated biphenyl (PCB) removal from contaminated soils using microwave-generated steam (MGS) was performed. Initial experimental results show that MGS effectively removed PCBs from contaminated soil with an overall removal efficiency of greater than 98\% at a steam-to-soil mass ratio of 3:1. Removal efficiency was found to be dependent upon the amount of steam employed, expressed as a mass ratio of steam applied to soil mass. Evaporation was identified as a major mechanism in removing PCBs from the soil. Rapid expansion and evaporation of pore water by microwave dielectric heating accelerated evaporation rates of PCB molecules. Increased solubility of PCBs into the heated aqueous phase is also hypothesized. Together these effects increase mass-transfer rates, thus enhancing removal of PCBs from the soil.
This article was published in J Air Waste Manag Assoc and referenced in Oil & Gas Research

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