Remediation of heavy metal(loid)s contaminated soils - To mobilize or to immobilize?

Bolan, Nanthi, Kunhikrishnan, Anitha, Thangarajan, Ramya, Kumpiene, Jurate, Park, Jinhee, Makino, Tomoyuki, Kirkham, Mary Beth and Scheckel, Kirk (2014) Remediation of heavy metal(loid)s contaminated soils - To mobilize or to immobilize?. Journal of Hazardous Materials, 266 141-166. doi:10.1016/j.jhazmat.2013.12.018


Author Bolan, Nanthi
Kunhikrishnan, Anitha
Thangarajan, Ramya
Kumpiene, Jurate
Park, Jinhee
Makino, Tomoyuki
Kirkham, Mary Beth
Scheckel, Kirk
Title Remediation of heavy metal(loid)s contaminated soils - To mobilize or to immobilize?
Journal name Journal of Hazardous Materials   Check publisher's open access policy
ISSN 0304-3894
1873-3336
Publication date 2014-02-15
Year available 2013
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.jhazmat.2013.12.018
Volume 266
Start page 141
End page 166
Total pages 26
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Unlike organic contaminants, metal(loid)s do not undergo microbial or chemical degradation and persist for a long time after their introduction. Bioavailability of metal(loid)s plays a vital role in the remediation of contaminated soils. In this review, the remediation of heavy metal(loid) contaminated soils through manipulating their bioavailability using a range of soil amendments will be presented. Mobilizing amendments such as chelating and desorbing agents increase the bioavailability and mobility of metal(loid)s. Immobilizing amendments such of precipitating agents and sorbent materials decrease the bioavailabilty and mobility of metal(loid)s. Mobilizing agents can be used to enhance the removal of heavy metal(loid)s though plant uptake and soil washing. Immobilizing agents can be used to reduce the transfer to metal(loid)s to food chain via plant uptake and leaching to groundwater. One of the major limitations of mobilizing technique is susceptibility to leaching of the mobilized heavy metal(loid)s in the absence of active plant uptake. Similarly, in the case of the immobilization technique the long-term stability of the immobilized heavy metal(loid)s needs to be monitored.
Keyword Bioavailability
Metalloids
Metals
Mobility
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 21 December 2013

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Centre for Mined Land Rehabilitation Publications
Official 2014 Collection
 
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