Aug 01, 2019 The effectiveness of immobilization was evaluated by analyzing the leachable fraction of heavy metals from the ball-milled soil. When the milling time was 2 h, Pb, Cu, and Zn leaching concentrations decreased from 13.92 mg·L −1, 2.83 mg·L −1, and 114.42 mg·L −1 to 0.027 mg·L −1, 0.59 mg·L −1, and 0.16 mg·L −1, respectively
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Aug 01, 2019 At a milling speed of 500 rpm, and BPR 12, the leaching concentrations of Pb, Cu and Zn decreased with increasing milling time as shown in Fig. 2.The leaching concentrations of Pb, Cu and Zn in untreated soil were 13.92 mg·L −1, 2.71 mg·L −1, and 114.31 mg·L −1, which were 273 times, 2.6 times, and 113 times higher than the Class III level of the Chinese Surface Water Environmental
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