Supercritical fluid extraction of polychlorinated biphenyls and pesticides from soil

GC/MS Determination of Phenolic Compounds in Soil Samples Using Soxhlet Extraction and Derivatization Techniques

“…[6][7][8][9] A method for Bisphenol A in water was also developed. 10 Recently, we reported a successful application of the liquidliquid extraction method for determining endocrine disruptors in different water samples.…”

Benzimidazole Fungicides in Environmental Samples: Extraction and Determination Procedures

“…The most frequently used methods for the extraction of organic compounds from soils are Soxhlet or ultrasonic extraction. The newer extraction techniques, such as supercritical fluid extraction (SFE) (Van der Velde et al, 1992;Snyder et al, 1993;Ling and Liao, 1996), pressurized liquid extraction (PLE) (Mogadati et al, 1999) and microwave-assisted extraction (MAE), are very attractive because they are faster, use much smaller amounts of solvents and are environmentally friendly techniques. SFE uses a solvent in its supercritical state.…”

Basic Engineering Research for D and D of R Reactor Storage Pond Sludge: Electrokinetics, Carbon Dioxide Extraction, and Supercritical Water Oxidation

“…Within two more years, the project can produce the data necessary for prototype design and a larger-scale demonstration. Further research and development would include (1) fine tuning the Codethanol extraction process to achieve higher rates of extraction; (2) additional lab-scale tests comparing hot water and C02 as the extraction solvent, and extracting PCBs from additional solid matrices of interest to SRS and DOE; (3) performing additional experiments and kinetic analysis of the SCWO process; (4) obtaining additional phase equilibrium data for PCBs in support of extraction and oxidation modeling; and (5) modeling and consolidating all technical data so that a prototype combined-cycle apparatus could be built and a larger-scale demonstration could be considered for implementation by DOE.…”

“…Quantify destruction of PCBs and chlorinated aromatics in the presence of C02. 3. Design an electrochemical cell for bulk destruction of PCBs.…”

“…Fiber optic cables are used for providing the incident light and collecting the non-absorbed light signal. For a typical experimental run, the view cell is charged with [1][2][3][4][5] g of the PCB congener of interest, such that the PCB liquid phase will be visible through the window. The cell is then charged with water until full, with excess water being vented out the top of the cell.…”