Experimental study on the treatment of furfural wastewater by ozone-Fenton coupling intensification

IF 3.8 3区工程技术 Q3 ENERGY & FUELS Chemical Engineering and Processing - Process Intensification Pub Date : 2024-08-26 DOI:10.1016/j.cep.2024.109960

Keyan Liu, Leiming Wang, Yifeng Han, Jinliang Tao, Feng Wei

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Abstract

Furfural production generates wastewater characterized by high concentration, strong acidity, and poor biodegradability, necessitating treatment before discharge. The Fenton process, known for its cost-effectiveness, is widely used for industrial wastewater treatment. However, it has limitations such as a narrow pH operating range and significant secondary pollution. To optimize this, researchers have explored combining Fenton with other processes, yet few have studied its synergy with O₃. This study investigates the advantages of O₃/Fenton coupling in treating furfural wastewater, comparing the capabilities of O₃, O₃/H₂O₂, Fenton, and O₃/Fenton processes. Results show that ozone-Fenton coupling exhibits superior industrial treatment performance. Post-treatment, the wastewater's B/C ratio reached 0.43, TOC removal rate was 33.6%, and ozone utilization efficiency was 74.6%, surpassing other methods. UV absorption spectra analysis indicated enhanced degradation of aromatic compounds, transforming them into smaller organic molecules. This study highlights ozone-Fenton coupling as a low-cost, effective enhancement for furfural wastewater treatment, offering significant guidance for future research in this field.

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臭氧-芬顿耦合强化法处理糠醛废水的实验研究

糠醛生产产生的废水具有高浓度、强酸性和生物降解性差的特点，需要在排放前进行处理。Fenton 工艺以其成本效益著称，被广泛用于工业废水处理。然而，它也有其局限性，如 pH 值操作范围窄和二次污染严重。为了优化这一问题，研究人员探索了 Fenton 与其他工艺的结合，但很少有人研究它与 O3 的协同作用。本研究通过比较 O3、O3/H2O2、Fenton 和 O3/Fenton 工艺的能力，探讨了 O3/Fenton 联用在处理糠醛废水中的优势。结果表明，臭氧-芬顿耦合工艺具有更优越的工业处理性能。处理后，废水的 B/C 比达到 0.43，TOC 去除率为 33.6%，臭氧利用率为 74.6%，超过了其他方法。紫外吸收光谱分析表明，芳香族化合物的降解能力增强，并转化为更小的有机分子。这项研究强调了臭氧-Fenton 耦合技术是一种低成本、有效的糠醛废水处理增强技术，为该领域的未来研究提供了重要指导。

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来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.