Remediation of diesel-contaminated soil using supercritical carbon dioxide and ultrasound

Ik Beom Park; Younggyu Son; Il Seok Song; Jongchan Kim; Jeehyeong Khim

doi:10.1143/JJAP.47.4314

Remediation of diesel-contaminated soil using supercritical carbon dioxide and ultrasound

Ik Beom Park, Younggyu Son, Il Seok Song, Jongchan Kim, Jeehyeong Khim

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The purpose of this study was to identify and evaluate the efficiency of the supercritical fluid extraction (SFE) method for removing diesel from an artificially contaminated soil using a supercritical carbon dioxide and an ultrasound. Compared with SFE, ultrasound-enhanced/assisted SFE (USFE) was able to provide a 14.8% increase in the diesel removal rate from dieselcontaminated soil at the SFE conditions of 40 °C, 16 MPa, 2 mL/min CO₂ flow rate and 40 min dynamic extraction time, and the ultrasound conditions of 316W/cm² and 20 kHz. These results showed that an ultrasound reduce the extraction time, the extraction pressure, the CO₂ flow rate and the extraction temperature during the SFE process by enhancing the mass transfer from the soil to the supercritical CO₂.

Original language	English
Pages (from-to)	4314-4316
Number of pages	3
Journal	Japanese journal of applied physics
Volume	47
Issue number	5 PART 2
DOIs	https://doi.org/10.1143/JJAP.47.4314
Publication status	Published - 2008 May 23

Keywords

Diesel-contaminated soil
SFE
Supercritical carbon dioxide
USFE
Ultrasound

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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abstract = "The purpose of this study was to identify and evaluate the efficiency of the supercritical fluid extraction (SFE) method for removing diesel from an artificially contaminated soil using a supercritical carbon dioxide and an ultrasound. Compared with SFE, ultrasound-enhanced/assisted SFE (USFE) was able to provide a 14.8% increase in the diesel removal rate from dieselcontaminated soil at the SFE conditions of 40 °C, 16 MPa, 2 mL/min CO2 flow rate and 40 min dynamic extraction time, and the ultrasound conditions of 316W/cm2 and 20 kHz. These results showed that an ultrasound reduce the extraction time, the extraction pressure, the CO2 flow rate and the extraction temperature during the SFE process by enhancing the mass transfer from the soil to the supercritical CO2.",

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