Degradation of pyrene in contaminated soil by the dielectric barrier discharge combined with the MnFe2O4 catalyst. Issue 55 (16th December 2022)

• Record Type: Journal Article
• Authors: Zeng, Zixu; Zhang, Yani; Xu, Xianlun; Hao, Shaoyun; Lei, Lecheng; Zhang, Xingwang
• Is Part Of: RSC advances. Volume 12:Issue 55(2022)
• Page Start: 36158
• Page End: 36163
• Publication Date: 2022-12-16
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra06251h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Improved degradation efficiency of pyrene by the DBD/MnFe2 O4 system. Abstract : In this work, a spinel oxide of MnFe2 O4 was used as the dielectric barrier discharge (DBD) catalyst for the remediation of pyrene-contaminated soil. The performances were investigated through tuning voltage, frequency, catalyst dosage, and soil moisture. Under the optimal conditions, such as the voltage of 10.0 kV, the discharge frequency of 1.0 kHz, MnFe2 O4 dosage of 0.3 g, air flow rate of 2.0 L min −1, soil humidity of 5.3%, and degradation efficiency of DBD/MnFe2 O4 for pyrene could reach 79.26% after 10 min treatment, which was much higher than that of DBD for pyrene of 42.56%. The DBD/MnFe2 O4 system also showed the high degradation efficiency of other pollutants including phenanthrene, p -nitrophenol, and p -nitrophenol in contaminated soil. The enhancing mechanism of the DBD/MnFe2 O4 system was discussed.