用于降解双酚 A 的过硫酸盐活化 LaCuMnOx:对高盐环境的卓越耐受性

IF 2.8 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Lijuan Xie, Yihong Zhu, Yun Deng, Zhenxing Huang, Aijia Zou, Huifang Yan, Wenquan Ruan
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引用次数: 0

摘要

背景设计了一种有效的催化剂--LaCuMnOx (LCMO) perovskite,用于激活过硫酸盐 (PDS),以去除高盐废水中的双酚 A (BPA)。结果在 LCMO/PDS 系统中,当催化剂浓度为 0.12 g/L 和 PDS 浓度为 1.2 mM 时,双酚 A(10 mg/L)被完全去除,矿化度达到 74.9%。即使在五个循环之后,双酚 A 的去除率仍然接近 100%。金属离子泄漏也表明了催化体系的稳定性。-OH、SO4、1O2 和 O2 对双酚 A 的去除均有贡献,其中 O2 的贡献最大。催化剂表面氧空位(Vo--)的存在对于 PDS 的活化和活性物种的形成非常重要。此外,即使[Cl-]和[SO42-]为 100 g/L,该系统仍能保持出色的性能。CO32- 和 HCO3- 能极大地抑制双酚 A 的降解,即使浓度很低。这种抑制作用与添加 CO32- 和 HCO3- 引起的溶液 pH 值变化有关。结论该系统表现出优异的催化性能、稳定性和对无机阴离子的耐受性,表明其具有在高碱性废水处理中应用的潜力。© 2024 化学工业学会(SCI)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
LaCuMnOx perovskite activating persulfate for the degradation of bisphenol A: excellent tolerance to hypersaline environment

Background

LaCuMnOx (LCMO) perovskite was designed as an effective catalyst to activate peroxydisulfate (PDS) to remove bisphenol A (BPA) in hypersaline wastewater.

Results

In the LCMO/PDS system, BPA (10 mg/L) was removed completely and the mineralization degree reached 74.9% in the presence of 0.12 g/L catalyst and 1.2 mM PDS. The BPA removal efficiency was still almost 100% even after five cycles. Metal ion leakage also indicated the stability of the catalytic system. OH, SO4•−, 1O2, and O2•− all contributed to BPA removal, and O2•− accounted for the greatest contribution. The presence of oxygen vacancies (Vo··) on the surface of the catalyst was important for PDS activation and the formation of active species. In addition, the system could still maintain outstanding performance even when [Cl] and [SO42−] were 100 g/L. CO32− and HCO3 inhibited BPA degradation greatly, even at very low concentrations. The inhibitory effect was related to changes in the pH of the solution caused by the addition of CO32− and HCO3. This effect could be eliminated by adjusting the pH.

Conclusion

The system showed excellent catalytic performance, stability, and inorganic anion tolerance, indicating its potential for application in hypersaline wastewater treatment. © 2024 Society of Chemical Industry (SCI).

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来源期刊
CiteScore
7.00
自引率
5.90%
发文量
268
审稿时长
1.7 months
期刊介绍: Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.
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