Application of Ultrasound-Assisted Supercritical Extraction to Soil Remediation

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Teresa Castelo Grande (Author) FEUP; Paulo A. Augusto (Author) FEUP; Angel M. Estévez (Author) Other; Domingos Barbosa (Author) FEUP

Journal

Title: Chemical Engineering and Technology

Vol. 40 No. 4

Pages: 691-698

ISSN: 0930-7516

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 3 Citations

INSPEC

Scientific classification

CORDIS: Technological sciences > Engineering > Chemical engineering

FOS: Engineering and technology > Chemical engineering

Associated Projects

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

LEPABE-2-ECO-INNOVATION - LEPABE-2-ECO-INNOVATION

Other information

Authenticus ID: P-00M-H7E

DOI: 10.1002/ceat.201600378

Abstract (EN): The coupling of ultrasound to supercritical extraction with carbon dioxide has been evaluated as a green remediation technique for soils contaminated with pesticides. The study used samples of soil spiked with atrazine, an organophosphate and contaminant of widespread use. The influence of the operating temperature and pressure on the extraction of atrazine was studied. The extraction of atrazine was enhanced with the use of ultrasound relative to the results obtained from conventional supercritical extraction. This study, operated in semi-continuous mode, demonstrates the possibility of increasing the yield of supercritical extraction by coupling with ultrasound instead of adding co-solvents, which is a greener alternative for removing contaminants such as pesticides from soil matrices. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8