Preparation of iron-loaded fly ash and study on Fenton catalytic oxidation of p-Clorophenol

Bin Wu; Ruifeng Zhou; Yi Zheng; Cailin Liu

doi:10.1117/12.2619866

9 December 2021 Preparation of iron-loaded fly ash and study on Fenton catalytic oxidation of p-Clorophenol

Bin Wu, Ruifeng Zhou, Yi Zheng, Cailin Liu

Proceedings Volume 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021); 120301G (2021) https://doi.org/10.1117/12.2619866
Event: Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 2021, Hefei, China

Abstract

Power plant solid waste fly ash was successfully modified by pickling ferrous sulfate and impregnated to obtain ironloaded fly ash. The structure and surface properties of the obtained compound were characterized by X-ray diffraction (XRD), X Ray Fluorescence (XRF) and Fourier-transform infrared spectrometer (FTIR). The XRD pattern shows that the iron (Fe) elements were loaded on the fly ash in the form of ions, and the iron content (taken as Fe₂O₃) of the modified fly ash increased from 11.5% to 19%. The Iron-loaded fly ash was used to catalyze heterogeneous Fenton oxidation at a high concentration of p-chlorophenol solution (7000mg/L), and the main experimental results were as follows: non-modifies fly ash and iron-loaded fly ash exhibited poor adsorption effect on 7000mg/L p-chlorophenol with 3 and 7% of adsorption capacity respectively. It was found that the optimal reaction conditions using iron-loaded fly ash for fenton catalytic oxidation of p-chlorophphenol were under a pH value of 3, with a dosage of Hydrogen peroxide (H₂O₂) of 1mL/L, for an iron-loaded fly ash of 30mg/ L during 30 minutes for a degradation rate of p-chlorophenol reaching 96%. FTIR analysis results show that the active sites of fly ash and iron-loaded fly ash fenton catalyze oxidative degradation of p-chlorophenol are the triple bond and cumulative double bond regions with a wave number of 2360 cm-1.

Citation Download Citation

Bin Wu, Ruifeng Zhou, Yi Zheng, and Cailin Liu "Preparation of iron-loaded fly ash and study on Fenton catalytic oxidation of p-Clorophenol", Proc. SPIE 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 120301G (9 December 2021); https://doi.org/10.1117/12.2619866

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