Effect of ultrasound on removal of persistent organic pollutants (POPs) from different types of soils

Reena Amatya Shrestha, Thuy Duong Pham, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

A new and promising technology is utilization of sonochemistry on decontamination of polluted soil. The feasibility of this technology on treatment of contaminated soils (synthetic clay, natural farm clay, and kaolin) was studied by using two target persistent organic pollutants (POPs): hexachlorobenzene (HCB) and phenanthrene (PHE). The soils were highly contaminated in 500 mg/kg. The laboratory experiments were conducted with various conditions (moisture, power, and time duration). The effects of these parameters on ultrasonication (as well as the removal of contaminants) were examined. The reasonable moisture ratio of the slurry could be in range of 2:1-3:1. The process did not change pH values of soils. Experimental results showed that ultrasonication has a potential to reduce the high concentrations of these POPs.

Original languageEnglish
Pages (from-to)871-875
Number of pages5
JournalJournal of Hazardous Materials
Volume170
Issue number2-3
DOIs
Publication statusPublished - 30 Oct 2009
Externally publishedYes

Keywords

  • POPs
  • Soil remediation
  • Ultrasonication

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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