Reuse of PANI wastewater treated by anodic oxidation/electro-Fenton for the preparation of PANI

Ou, Bin; Wang, Jixiao; Wu, Ying; Zhao, Song; Wang, Zhi

doi:10.1016/j.chemosphere.2019.125689

Cited by 13 publications

(1 citation statement)

References 35 publications

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“…Electro-Fenton (EF) (Dolatabadi et al 2021;Qi et al 2022;Song et al 2023) process, a well-known advanced oxidation process (AOP), can produce a strong oxidizing hydroxyl radical (•OH) (E°¼ 2.80 V/SHE), thereby rapidly removing PAM from produced water (María et al 2016;Ou et al 2020;Lai et al 2021;Wang et al 2022). According to the properties of the catalyst, the EF process can be divided into homogeneous and heterogeneous processes (Soliu et al 2018;Zou et al 2022;Song et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous electro-Fenton removal of polyacrylamide in aqueous solution over CoFe2O4 catalyst

Xu,

Yang,

2024

Water Science &Amp; Technology

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Polyacrylamide (PAM) in environmental water has become a major problem in water pollution management due to its high molecular mass, high viscosity and non-absorption by soil. CoFe2O4 with strong magnetic properties was prepared by solvent-thermal synthesis method and used as the catalyst for the removal on PAM in heterogeneous Electro-Fenton (EF) system. It showed that the removal efficiency of PAM by the heterogeneous EF system using CoFe2O4 catalyst was 92.01% at pH 3 after 120 min. Further studies indicated that ·OH was the most significant active species for the removal of PAM, and the contribution of ·O2− and SO4·− for the removal of PAM was less than 15%. The reusability test and XRD, XPS, FTIR analyses proved that the catalyst had good stability. After a repeated use for 5 times, the catalyst still had a high PAM removal rate and stable structure. The valence distribution and functional groups of the phase components of the catalyst did not change significantly before and after the reaction. The possible mechanism of catalyst activation of H2O2 was deduced by mechanism investigation. The CoFe2O4 is an efficient and promising catalyst for the removal of PAM wastewater.

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