ABSTRACT
The application of microwave heating technology to conventional gas stripping processes has been investigated in the remediation of contaminated drill cuttings. The technical feasibility and limitations of nitrogen and steam stripping processes are demonstrated, and it is shown that the combination of microwave heating with the stripping process offers a step change in performance. Order of magnitude improvements in processing time are shown for the microwave-assisted processes, as well as greatly improved levels of remediation. The mechanisms of contaminant removal are discussed, along with the phenomena which occur with microwave heating processes. The energy requirements of each of pure gas and microwave-assisted processes are also discussed, and the potential applications of each technology are highlighted relative to the overall remediation requirements.
Subject(s)
Geologic Sediments/chemistry , Microwaves , Petroleum , Hot TemperatureABSTRACT
The effects of microwave radiation on the magnetic properties of common ore minerals are discussed. The effects of varying microwave power levels on heating rates are presented along with comparative magnetic susceptibility surveys for both treated and non treated minerals. Various chemical and physical analysis techniques are considered to quantify any changes in mineral phases during heating. Conclusions are made as to the possible impact of microwave pretreatment on the downstream magnetic processing of minerals and ores.
