Abstract
The use of ultrasound as an enhancement mechanism in the surfactant-aided soil-washing process was examined by conducting desoption tests of soils contaminated with naphthalene or diesel-oil. The experiments were conducted to elucidate the effect of ultrasound on the mass transfer from soil to the aqueous phase using naphthalene-contaminated soil. In addition, the use of ultrasound for the diesel-oil-contaminated soil was investigated under a range of conditions of surfactant concentration, sonication power, duration, soil/liquid ratio, particle size and initial diesel-oil concentration. The ultrasound used in the soil-washing process significantly enhanced the mass transfer rate from the solid phase to the aqueous phase. The removal efficiency of diesel-oil from the soil phase generally increased with longer sonication time, higher power intensity, and large particle size.
| Original language | English |
|---|---|
| Pages (from-to) | 4775-4778 |
| Number of pages | 4 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 46 |
| Issue number | 7 B |
| DOIs | |
| Publication status | Published - 2007 Jul 26 |
Keywords
- Desorption
- Diesel-oil
- Naphthalene
- Remediation
- Soil-washing
- Sonication
- Ultrasound
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)