Behavior and Distribution of Heavy Metals Including Rare Earth Elements, Thorium, and Uranium in Sludge from Industry Water Treatment Plant and Recovery Method of Metals by Biosurfactants Application

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Published online 2012 May 27. doi: 10.1155/2012/173819

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Table 3

The concentrations of heavy metals in sludge (mg·kg⁻¹).

	Zn	Pb	Cd	Ni	Cr	Cu
Original sludge	232	33.5	11.2	32.7	53.0	50.7
Polluted sludge	233	1.21 × 10³	11.5	716	984	51.2

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