The sediments of the port areas are often affected by the presence of several contaminants, which are generated from anthropic activities. These compounds can be toxic for the human health, thus, also to ensure a correct management and avoid the disposal in landfills, the sediments need to be treated. A novel approach proposal by international literature for sediments remediation is the use of advanced oxidation processes, which include ultrasonic technologies. Ultrasounds could be applied mainly to mineralize organic compounds and to desorb inorganic compounds through chemical and mechanical effects, respectively. The present paper is focused on the effectiveness of sonication to abate organic contaminants. The tests were carried out by ultrasound bath at different times of the treatment and sonication frequencies. The treatment efficiency was evaluated in terms of removal percentage. High percentages of degradation were achieved during the treatments in all the tests. The results demonstrated that ultrasound technology is a possible alternative technology for the treatment of contaminated sediments
Treatment of contaminated marine sediments by sonolysis
FRAIESE, ANGELA;NADDEO, Vincenzo;BELGIORNO, Vincenzo
2017-01-01
Abstract
The sediments of the port areas are often affected by the presence of several contaminants, which are generated from anthropic activities. These compounds can be toxic for the human health, thus, also to ensure a correct management and avoid the disposal in landfills, the sediments need to be treated. A novel approach proposal by international literature for sediments remediation is the use of advanced oxidation processes, which include ultrasonic technologies. Ultrasounds could be applied mainly to mineralize organic compounds and to desorb inorganic compounds through chemical and mechanical effects, respectively. The present paper is focused on the effectiveness of sonication to abate organic contaminants. The tests were carried out by ultrasound bath at different times of the treatment and sonication frequencies. The treatment efficiency was evaluated in terms of removal percentage. High percentages of degradation were achieved during the treatments in all the tests. The results demonstrated that ultrasound technology is a possible alternative technology for the treatment of contaminated sedimentsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
