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Remediation of Perfluoroalkyl Substances in Landfill Leachates by Electrocoagulation
A process for the determination of anaerobic‐oxic biologically treated perfluoroalkyl substances (PFASs) in leachates from a landfill in Beijing, China, is provided. The applicability of electrocoagulation (EC) with aluminum electrodes for the remediation of PFASs in landfill leachates is investigated in detailed. With reaction time of 45 min, plate distance of 1 cm, current density of 35 mA/cm2 and plate amounts of four pairs, the EC reactor achieved the optimal removal efficiencies for chemical oxygen demand and PFASs. Perfluorooctane sulfonate was not detected in the treated leachates after the EC treatment. The average removal efficiencies of perfluorohexanoic acid, perfluoroheptanoic acid, perfluorooctanoate acid, perfluorononanoic acid and perfluorodecanoic acid were 65.1, 58.5, 75.2, and 33.8%, respectively. However, perfluoroundecanoic acid and perfluorododecanoic acid concentration increased by about 20.2 and 18.6% after the EC treatment process.
Remediation of Perfluoroalkyl Substances in Landfill Leachates by Electrocoagulation
A process for the determination of anaerobic‐oxic biologically treated perfluoroalkyl substances (PFASs) in leachates from a landfill in Beijing, China, is provided. The applicability of electrocoagulation (EC) with aluminum electrodes for the remediation of PFASs in landfill leachates is investigated in detailed. With reaction time of 45 min, plate distance of 1 cm, current density of 35 mA/cm2 and plate amounts of four pairs, the EC reactor achieved the optimal removal efficiencies for chemical oxygen demand and PFASs. Perfluorooctane sulfonate was not detected in the treated leachates after the EC treatment. The average removal efficiencies of perfluorohexanoic acid, perfluoroheptanoic acid, perfluorooctanoate acid, perfluorononanoic acid and perfluorodecanoic acid were 65.1, 58.5, 75.2, and 33.8%, respectively. However, perfluoroundecanoic acid and perfluorododecanoic acid concentration increased by about 20.2 and 18.6% after the EC treatment process.
Remediation of Perfluoroalkyl Substances in Landfill Leachates by Electrocoagulation
Zhang, Chunhui (author) / Peng, Yi (author) / Ning, Ke (author) / Niu, Xiameng (author) / Tan, Shuhui (author) / Su, Peidong (author)
CLEAN – Soil, Air, Water ; 42 ; 1740-1743
2014-12-01
4 pages
Article (Journal)
Electronic Resource
English
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