Title: Effects of metal doping on ozone degradation of tributyl phosphate on Al₂O₃-ZSM-5 catalyst

Authors: Gang Li; Songlin Zheng; Xiangping Su; GuiShan Chen

Addresses: Zhonghejiahua Equipment Manufacturing Co, Ltd., Jiayuguan, 735100, China ' Zhonghejiahua Equipment Manufacturing Co, Ltd., Jiayuguan, 735100, China ' Zhonghejiahua Equipment Manufacturing Co, Ltd., Jiayuguan, 735100, China ' Zhonghejiahua Equipment Manufacturing Co, Ltd., Jiayuguan, 735100, China

Abstract: In this study, we utilised a commonly used Al₂O₃-ZSM-5 support and impregnated it with different combinations of MnFe, MnCu, and MnCo atoms. These newly created materials were then tested in a flow reactor designed in our laboratory to assess their effectiveness in activating ozone for the decomposition of tributyl phosphate (TBP). Our findings highlight the manganese-iron catalyst as the preferred choice, characterised by a manganese content of 5.0% and an iron content of 2.0%. Under specific reaction conditions of a flow volume of 500 mL/L, a reaction time of 6.5 h, and a reaction temperature of 80°C, we observed a significant decrease in the chemical oxygen demand (COD) of the solution to 372 mg/L. These results demonstrate the superior performance of this process and catalyst in the treatment of TBP.

Keywords: ozone; TBP; tributyl phosphate; degradation; Al₂O₃-ZSM-5 catalyst; metal doping.

DOI: 10.1504/IJEP.2023.139858

International Journal of Environment and Pollution, 2023 Vol.73 No.1/2/3/4, pp.205 - 219

Received: 24 Jan 2024
Accepted: 07 May 2024
Published online: 08 Jul 2024 *

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