YUE Min, WANG Jing, HAN Yuze, ZHANG Ping. Degradation of bisphenol A by peroxymonosulfate activated by MnFe2O4 prepared by salt-assisted solution combustion synthesis[J]. CIESC Journal, 2020, 71(12): 5589-5598 DOI: 10.11949/0438-1157.20200493.
YUE Min, WANG Jing, HAN Yuze, ZHANG Ping. Degradation of bisphenol A by peroxymonosulfate activated by MnFe2O4 prepared by salt-assisted solution combustion synthesis[J]. CIESC Journal, 2020, 71(12): 5589-5598 DOI: 10.11949/0438-1157.20200493.DOI:
Degradation of bisphenol A by peroxymonosulfate activated by MnFe2O4 prepared by salt-assisted solution combustion synthesis
) prepared by the salt-assisted solution combustion synthesis was used to activate peroxymonosulfate(PMS) to oxidize bisphenol A in aqueous solution. The prepared MnFe
2
O
4
catalyst was characterized by XRD and BET. The effects of MnFe
2
O
4
dosage
PMS dosage
initial pH of the solution
quencher
and co-existing ions on the degradation of bisphenol A were investigated. The reusability of the MnFe
2
O
4
catalyst was evaluated through cycling experiments. The results showed that the best dosages of MnFe
2
O
4
and PMS were 0.3 g/L and 0.3 mmol/L
respectively. When the initial pH was 11.0
the degradation rate of bisphenol A was 99.3% in 60 min. When putting some quenchers into the MnFe
2
O
4
/PMS catalytic system
all of them showed depression effects on degradation of bisphenol A
and the
1
O
2
was the main active species. The co-existing ions such as Cl
-
HCO
3
-
and HPO
4
2-
in solution affected the degradation of bisphenol A. The TOC removal rate of bisphenol A within 60 min was 34.9%
the rupture and opening of benzene ring are the main reaction pathways. After the MnFe
2
O
4
catalyst was recycled three times
the degradation rate of bisphenol A remained at about 90.0%.
关键词
Keywords
references
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