标题: Engineered Fe-doped activated carbon from industry waste for peroxymonosulfate activation: Performance and mechanism

作者: Fan, XH (Fan, Xiaohui); Zhao, JJ (Zhao, Jinjin); Cheng, C (Cheng, Cheng); Xu, Y (Xu, Yin); Zhang, H (Zhang, Hui)

来源出版物: SEPARATION AND PURIFICATION TECHNOLOGY  卷: 325  文献号: 124607  DOI: 10.1016/j.seppur.2023.124607  出版年: NOV 15 2023  

摘要: Efficient and low-cost catalysts are important for contaminant remediation in peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs). In this study, a solid waste, generated by the polyferric chloride coagulation of the phenol-saturated powder activated carbon from an industrial wastewater treatment plant, was used to prepare metal/carbon composites under different pyrolysis temperatures (650-950 degrees C). The catalyst pyrolyzed at 950 degrees C (FeAC-950) exhibited the highest reactive activity for PMS activation as demonstrated by a series of electrochemical techniques. Nearly complete BPA elimination can be achieved within 60 min by 0.1 g L-1 FeAC950 and 0.5 mM PMS. The results of electron paramagnetic resonance (EPR), chemical quenching and open circuit potential (OCPT) experiments demonstrate a combined radical and non-radical oxidation mechanism in the FeAC-950/PMS process and BPA was removed dominantly through radical pathway. Various persistent organic pollutants can be efficiently eliminated in the FeAC-950/PMS system. In addition, the present system showed good tolerance to natural organic matter as well as some common anions such as chloride and nitrate. This study dedicated a simple method to prepare an efficient solid waste-based catalyst in environmental catalysis. The outcomes will not only provide a value-added reuse approach for waste management but also facilitate the FeAC-950 applications in wastewater remediation technologies.

作者关键词: Solid waste; Activation mechanism; Zero valent iron; Peroxymonosulfate; Organic pollutants

KeyWords Plus: BISPHENOL-A; DEGRADATION; SYSTEM; OXIDATION; PATHWAYS

地址: [Fan, Xiaohui; Zhao, Jinjin; Cheng, Cheng; Zhang, Hui] Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Sci & Engn, Wuhan 430079, Peoples R China.

[Xu, Yin] Hubei Univ, Fac Resources & Environm Sci, Hubei Key Lab Reg Dev & Environm Response, Wuhan 430062, Peoples R China.

通讯作者地址: Zhang, H (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Sci & Engn, Wuhan 430079, Peoples R China.

电子邮件地址: eeng@whu.edu.cn

影响因子：8.6