Toward a new paradigm for tailings phytostabilization – nature of the substrates, amendment options and anthropogenic pedogenesis

Li, Xiaofang and Huang, Longbin (2014) Toward a new paradigm for tailings phytostabilization – nature of the substrates, amendment options and anthropogenic pedogenesis. Critical Reviews in Environmental Science and Technology, 45 8: 813-839. doi:10.1080/10643389.2014.921977


Author Li, Xiaofang
Huang, Longbin
Title Toward a new paradigm for tailings phytostabilization – nature of the substrates, amendment options and anthropogenic pedogenesis
Journal name Critical Reviews in Environmental Science and Technology   Check publisher's open access policy
ISSN 1064-3389
1547-6537
Publication date 2014-05-21
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1080/10643389.2014.921977
Open Access Status
Volume 45
Issue 8
Start page 813
End page 839
Total pages 27
Place of publication Philadelphia, PA, United States
Publisher Taylor & Francis
Collection year 2015
Language eng
Abstract Base metal tailings (BMT) are normally sulfidic and contain high abundance of residue metals. Their adverse impacts on the environment can last for decades to centuries if without appropriate stabilization. While in situ phytostabilization has been thought to be a promising approach to stabilize surface tailings, few studies have reported a success in constructing a sustainable plant community in BMT so far, implying that a new paradigm involving a sophisticated understanding of the nature of BMT is needed for BMT phytostabilization. Using a property database of BMT worldwide built in this study as a backdrop, this review explores how BMT are different from normal soils and how these differences influence the strategies of BMT phytostabilization. It is found that BMT are mineralogically and chemically different from natural soils, which endows BMT with unstable geochemistry and inherent extreme toxicity. Studies have documented that amendment options and soil development in BMT phytostabilization are largely constrained by these abiotic factors. From a viewpoint of pedogenesis, BMT can be seen as novel parent materials rather than soil. Accordingly, we propose that in BMT phytostabilization, extensive engineering efforts are required to increase the biocapacity of tailings (i.e., anthropogenic pedogenesis) rather than focus on the selection and establishment of plants.
Keyword Base metal tailings
Sulfide oxidation
Ecotoxicity
Amendments
Anthropogenic pedogenesis
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Centre for Mined Land Rehabilitation Publications
Official 2015 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 04 Aug 2014, 13:37:48 EST by Xiaofang Li on behalf of Centre For Mined Land Rehabilitation