Degradation of bisphenol A by electro-enhanced heterogeneous activation of peroxydisulfate using Mn-Zn ferrite from spent alkaline Zn-Mn batteries

Bin Deng; Yating Li; Weihua Tan; Zhaoxi Wang; Ziwei Yu; Shuya Xing; Heng Lin; Hui Zhang

doi:10.1016/j.chemosphere.2018.03.194

Degradation of bisphenol A by electro-enhanced heterogeneous activation of peroxydisulfate using Mn-Zn ferrite from spent alkaline Zn-Mn batteries

Chemosphere. 2018 Aug:204:178-185. doi: 10.1016/j.chemosphere.2018.03.194. Epub 2018 Mar 29.

Authors

Bin Deng¹, Yating Li¹, Weihua Tan¹, Zhaoxi Wang¹, Ziwei Yu¹, Shuya Xing¹, Heng Lin², Hui Zhang³

Affiliations

¹ Department of Science and Environmental Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan 430079, China.
² Department of Science and Environmental Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan 430079, China. Electronic address: lheng2015@whu.edu.cn.
³ Department of Science and Environmental Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan 430079, China. Electronic address: eeng@whu.edu.cn.

PMID: 29655111
DOI: 10.1016/j.chemosphere.2018.03.194

Abstract

Mn-Zn ferrite (Mn_0.6Zn_0.4Fe₂O₄) was prepared by a gel method using spent alkaline Zn-Mn batteries as raw materials and employed as catalyst to degrade bisphenol A (BPA) by electro-enhanced heterogeneous activation of peroxydisulfate (PDS). The effects of initial pH, current density, PDS concentration, and Mn-Zn ferrite dosage on BPA removal were investigated. The formation of reactive radicals was verified by electron paramagnetic resonance (EPR) spectroscopy. The results of radical quenching experiments indicate that surface-bound sulfate and hydroxyl radicals played an important role in BPA removal. The stability of Mn_0.6Zn_0.4Fe₂O₄ catalyst was investigated by cycling experiments, which indicates Mn_0.6Zn_0.4Fe₂O₄ is stable and can be reused. This work also provides an alternative way for the reutilization of spent alkaline Zn-Mn batteries.

Keywords: Bisphenol A; Hydroxyl radical; Mn(0.6)Zn(0.4)Fe(2)O(4); Peroxydisulfate; Spent batteries; Sulfate radical.

MeSH terms

Benzhydryl Compounds / chemistry*
Catalysis
Electric Power Supplies*
Ferric Compounds / chemistry*
Hydroxyl Radical
Manganese
Phenols / chemistry*
Recycling / methods
Sulfates / chemistry*
Zinc / chemistry

Substances

Benzhydryl Compounds
Ferric Compounds
Phenols
Sulfates
ferrite
Hydroxyl Radical
Manganese
Zinc
bisphenol A