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Soil contaminated with typical heavy metals (Pb, Cd, Cu, and Zn) was remedied by using the polymeric aluminum salt coagulants including polyaluminum chloride (PAC) and polyaluminum sulfate (PAS). The remediation efficiencies are influenced by reaction time, water amount, and dosage of remediation agent. The optimal remediation conditions are as follows: 6 h of reaction time, 1 kg/kg of water addition...
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