The phytoattenuation of the soil metal contamination: the effects of plant growth relgualtors (GA3 and IAA) by employing wetland macrophyte vetiver and energy plant sunflower

The phytoattenuation, a novel green remediation concept, has been successfully demonstrated while employing vetiver and biostimulator (gibberellic acid GA3 and indol-3-acetic acid IAA) to gradually mitigate the soil Cu levels. The effectiveness of stimulator GA3 and IAA was in the descending sequenc...

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Bibliographic Details
Published in:Desalination and water treatment 2012-07, Vol.45 (1-3), p.144-152
Main Authors: Chen, K.F., Yeh, T.Y., Hsu, Y.H., Chen, C.W.
Format: Article
Language:English
Subjects:
Acetic acid
Agricultural management
Applied sciences
Aquatic plants
Biostimulator
Contamination
Copper
Earth
Endangered species
Energy
Environmental monitoring
Exact sciences and technology
Gibberellic acid
Gibberellic acid (GA3)
Green remediation
Harvesting
Heavy metals
Indol-3-acetic acid (IAA)
Metal concentrations
Metals
On-site tests
Plant growth
Planting
Pollution
Rare species
Reduction (metal working)
Remediation
Sequencing
Soil
Soil contamination
Soil pollution
Soils
Sunflower
The phytoattenuation
Vetiver (Vetiveria zizaniodides)
Water treatment and pollution
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Summary:The phytoattenuation, a novel green remediation concept, has been successfully demonstrated while employing vetiver and biostimulator (gibberellic acid GA3 and indol-3-acetic acid IAA) to gradually mitigate the soil Cu levels. The effectiveness of stimulator GA3 and IAA was in the descending sequence GA3 > IAA. Biostimulator has been demonstrated plant growth enhancement and been employed for agricultural operation. The on-site tests demonstrated Cu levels were gradually deceasing during four months monitoring time periods. The soil metal level reduction achieved a satisfactory level which complied with local environmental standards. After more rounds of planting and harvesting, the soil metal concentration expected to be further dropped while on-site operation was executed. Green remediation concepts such as the phytoattenuation need to be taken as serious concern while the Earth has faced recent unprecedented damage Japan tsunami, Green house effect, unpredicted weather fluctuation worldwide, and serious endangered species issues.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2012.692021