Ultrasonically Enhanced Diesel Removal from Soil

Abstract

In this study, we investigated the effect of ultrasound on diesel removal from soils. Lab-scale soil flushing experiments were conducted for various conditions involving ultrasonic power, particle size, and diesel concentration, using specially designed and fabricated equipment. The test results indicated that the rate of contaminant extraction increased significantly with increasing ultrasonic power. The degree of enhancement varies with test conditions. Physical imaging of the specimens during tests was realized using a microscope. The images showed the disintegration of soil grains and oil drops resulting in a variation in contaminant removal efficiency.

Enhanced Removal of Hydrophobic Gas by Aerial Ultrasonic Waves and Two Kinds of Water Mists of Different Particle Sizes

“…Such gas removal has been shown to be viable applications of intense aerial ultrasonic waves. [3][4][5][6][7][8][9][10][11] Also, a study of gas removal using intense sonic waves has been carried out recently. [12][13][14] Gas removal effects have often been studied experimentally using lemon oil vapor (hereinafter called ''lemon gas''), which is a hydrophobic gas.…”

Remediation of Diesel-Contaminated Soil Using Supercritical Carbon Dioxide and Ultrasound

“…Alternative approaches such as sonication and supercritical fluid extraction (SFE) have therefore been sought in the soil remediation field. [1][2][3] Ultrasonic energy is a tool that has a potential for a wide application in chemical, medical, pharmaceutical, food industries, etc., and the use of high-intensity ultrasound represents a potentially efficient way to enhance mass transfer processes. [4][5][6][7][8] SFE also provides an alternative to conventional techniques because it has a robust ability to extract organic pollutants from environmental solids with the additional advantage of eliminating the need for liquid solvents.…”