title: Sonochemical destruction of chloroform by using low frequency ultrasound in batch and flow cell.
abstract: Ultrasound assisted environmental remediation is emerging as a viable technology to remove organic pollutants. In this study, the potential of low frequency ultrasound (20 kHz) to remediate chloroform contaminated waters (demineralised water and groundwater) in batch and flow cell treatment was evaluated. The results show that approx. 8 mg/L of chloroform was completely mineralized within 60 min in batch as well as flow cell treatments in both waters. However, flow cell treatment was superior to the batch mode for demineralised water in contrast to the groundwater for which there was no appreciable difference between batch and flow cell modes during initial 30 min. The presence of dissolved organic carbon, higher total dissolved solid content and any other co-contaminants might have contributed to the slower rate of chloroform destruction in the groundwater compared to the demineralised water. This study demonstrates the potential of low frequency ultrasound for remediation of chloroform contaminated waters.
authors.affiliation: Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, Australia.
authors.forename: Kandasamy
authors.initials: K
authors.lastname: Thangavadivel
authors.forename: Mallavarapu
authors.initials: M
authors.lastname: Megharaj
authors.forename: Roger St C
authors.initials: RS
authors.lastname: Smart
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Lesniewski
authors.forename: Ravi
authors.initials: R
authors.lastname: Naidu
mesh_terms: D002725:Chloroform / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D014465:Ultrasonics
chemical_list: D002725:Chloroform