In situ stabilization of arsenic and metal-contaminated agricultural soil using industrial by-products

Sang Hwan Lee, Eui Young Kim, Hyun Park, Jihoon Yun, Jeong-Gyu Kim

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

The usefulness of limestone, red mud, and furnace slag on the in situ stabilization of arsenic (As) and heavy metals was evaluated relative to different endpoints (microorganisms, plants, and humans). Individually or combined treatment of iron-rich amendments were effectively lowered the availability of trace elements. Compared to control soil, Ca(NO3)2-eatractable As, Cd, Pb, and Zn was reduced by 58%, 98%, 98%, and 99%, respectively, by combined treatment of limestone and red mud. The decreased availability of trace elements was accompanied by increased microbial activity (respiration, glucose mineralization, and soil enzyme activity) and decreased plant uptake of trace elements. Compared to non amended control soil, only 13%, 28%, 47%, and 12% of the As, Cd, Pb, and Zn, respectively, detected in combined treatment of limestone and red mud. These results suggest that iron-rich industrial by-products could be used for remediation of soils co-contaminated with metals and arsenic.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalGeoderma
Volume161
Issue number1-2
DOIs
Publication statusPublished - 2011 Feb 15

    Fingerprint

Keywords

  • Amendments
  • Arsenic
  • Heavy metals
  • In situ stabilization
  • Phytoavailability

ASJC Scopus subject areas

  • Soil Science

Cite this