Research Article

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

Table 3

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

ZnPbCdNiCrCu

Original sludge23233.511.232.753.050.7
Polluted sludge2331.21 × 10311.571698451.2