| View Larger Image | Alkaline biosolids and EDTA for phytoremediation of an acidic loamy soil spiked with cadmium [An article from: Science of the Total Environment, The] | Digitalby J.W. Wong (Author), W.W. Wong (Author), Z. Wei (Author), H. Jagadeesan (Author)
| List Price: | $8.95 | | | Available: | Available for download now |
| | Binding: | Digital | | Publisher: | Elsevier | | Publication Date: | May 25, 2004 |
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Product Description
This digital document is a journal article from Science of the Total Environment, The, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: A greenhouse experiment was conducted to investigate the growth of Brassica juncea and Cd phytoextraction in a mimicked Cd contaminated acidic loamy soil amended with alkaline biosolids, prepared from sewage sludge and coal fly ash, in the presence and absence of EDTA at 2 mmol kg^-^1. The acidic loamy soil was spiked with 0, 5, 20, 50 and 100 mg Cd kg^-^1 in the form of CdCO"3 and then amended with 4% alkaline biosolids (w/w). Alkaline biosolids and 0.12% CaCO"3 amendments resulted in a higher biomass than unamended soil spiked with 20 mg kg^-^1 Cd where plants did not survive and of the two amendments, alkaline biosolids amendment had higher plant dry weight yield and phytoextraction of Cd. Adding 2 mmol kg^-^1 EDTA to alkaline biosolids amended soil significantly increased the solubility of Cd ions by 9- to 29-fold, but plant Cd accumulation decreased by a factor of 24-48%. The results indicate that alkaline biosolids amendment is an effective approach for assisting growth of B. juncea and phytoextraction of Cd from the contaminated acidic loamy soil, but further application of chelating agents did not enhance the phytoextraction efficiency of Cd. |
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