Ultrasonically aided mineral processing technique for remediation of soil contaminated by heavy metals

Hanna Kyllönen, Pentti Pirkonen (Corresponding Author), Väinö Hintikka, Pekka Parviainen, Antti Grönroos, Hannu Sekki

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

Abstract

In this study, power ultrasound was used as aiding method for the mineral processing technique, which have recently been developed for the remediation of soil contaminated by heavy metal containing bullets, their broken parts and alteration products. Power ultrasound was used to disperse the soil to remove metals and metal compounds from soil particle surfaces instead of attrition conditioning. The soil diluted with water was treated using 22 kHz ultrasound power of 100 W up to 500 W. The effect of different ultrasonic treatment time and pulsation of ultrasound were studied on the purity of sink and float fractions in heavy medium separation process, screen fractions, and mineral concentrates and tailings from flotation process. Ultrasound enhanced the remediation of soil fractions in all the studied cases. Optimisation of the ultrasonic power will be done in the continuation study.
Original languageEnglish
Pages (from-to)211 - 216
Number of pages6
JournalUltrasonics Sonochemistry
Volume11
Issue number3-4
DOIs
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed

Keywords

  • ultrasound
  • power ultrasound
  • remediation
  • soil
  • heavy metals
  • mineral processing
  • minerals

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