Simultaneous degradation of sulfamethazine and reduction of Cr(VI) by flexible self-supporting Fe-Cu-Al2O3 nanofibrous membranes as heterogeneous catalysts: Insights into synergistic effects and mechanisms

Yang, Qian; Zhong, Yufei; Zhang, Zhuqin; Dang, Zhi; Li, Fangbai; Zhang, Li Juan

doi:10.1016/j.cej.2023.144984

Cited by 6 publications

(1 citation statement)

References 52 publications

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“…However, the low catalytic activity, poor stability, and poor recyclability limit the application of the above Fe-based catalytic materials to the removal of SMP from secondary effluent. In recent years, heterogeneous catalysts have been widely studied due to their excellent catalytic activity and durability [28,29], with bimetallic oxides with good catalytic effect, many cycles, and good stability becoming a research hotspot [30]. By incorporating copper (Cu) into the surface of nano-or micro-sized iron oxides (Fe-Cu bimetallic oxide), a larger specific surface area and more ductility chains would be obtained, which could avoid the rapid corrosion of Fe, ensure the long-term release of iron ions, and improve the reduction capacity of Fe and the utilization of organic matter by microorganisms [31].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Removal of Dissolved Effluent Organic Matter in Wastewater Using Lignin-Based Biochar Supported Fe–Cu Bimetallic Oxide Catalyst

Wang,

Kong,

et al. 2024

JMSE

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The effluent discharged from wastewater treatment facilities frequently enters the ocean, posing a considerable threat to the health of marine life and humans. In this paper, an alkali lignin-based biochar-loaded modified Fe–Cu catalyst (FeCu@BC) was prepared to remove soluble microbial products (SMP) from secondary effluent as disinfection by-products precursors at ambient temperature and pressure. The humic acid (HA) was taken as the representative substance of SMP. The results showed that the maximum removal efficiency of HA reached 93.2% when the FeCu@BC dosage, pH, initial HA concentration, and dissolved oxygen concentration were 5.0 g/L, 7, 100 mg/L, and 1.75 mg/L, respectively. After three cycles, the removal efficiency of HA could be maintained at more than 70%. The quenching experiments and electron spin resonance (EPR) results showed that •OH and 1O2 were involved in the degradation of HA in the FeCu@BC catalyst reaction system, with 1O2 playing a dominant role. Theoretical calculations confirmed that •OH and 1O2 were more prone to attack the C=O bond of the side chain of HA. After processing by the FeCu@BC catalyst, the yield of chlorinated disinfection by-products from secondary effluent had decreased in an obvious manner. This study provides a new solution to efficiently solve the problem of chlorinated disinfection by-products from HA.

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Section: Introductionmentioning

confidence: 99%