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IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-01-27 DOI:10.1016/j.ces.2025.121239

Jiani Xiao, Maximilian Dommke, Marcus Franke, Michael Stelter, Patrick Braeutigam

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引用次数: 0

摘要

水动力空化（HC）是一种降解微污染物的高级氧化过程，主要由羟基自由基（OH⋅OH⋅）驱动。本研究通过对上游高压（高达 60 巴）下的碳氢化合物进行表征，并综合运用化学、光学和模拟方法对碳氢化合物过程进行全面表征，填补了这一研究空白。利用水杨酸对 OH 自由基的产生进行了量化，双酚 A (BPA) 降解实验验证了它们在氧化反应中的作用。光学方法捕获了空化射流和鲁米诺化学发光图像，模拟估算了气泡形成和空化气体分数。这项研究重点关注 HC 系统中 10 至 60 巴的高压范围，证明了压力与 OH 自由基产生率和双酚 A 降解速率常数之间的比例关系。在 60 巴的压力下，观察到 OH 自由基的浓度和双酚 A 降解率最高。这项研究加深了人们对碳氢化合物及其优化污染控制潜力的了解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Integrated Characterization of Hydrodynamic Cavitation: Optical, Chemical, and Simulation Correlations

Hydrodynamic cavitation (HC) is an advanced oxidation process for degrading micropollutants, primarily driven by hydroxyl radicals (

O H \cdot

$O H \cdot$ ). This study addresses the research gap by characterizing HC under high upstream pressures (up to 60 bar) and integrating chemical, optical, and simulation approaches for a comprehensive characterization of HC processes. OH radical production was quantified with salicylic acid, and bisphenol A (BPA) degradation experiments validated their role in oxidation reactions. Optical methods captured cavitation jet and luminol chemiluminescent images, while simulations estimated vapor bubble formation and cavitation gas fractions. This research focuses on the high-pressure range of 10 to 60 bar in HC systems, demonstrating a proportional relationship between pressure and both the production rate of OH radical and the rate constants of BPA degradation. At 60 bar, the highest concentration of OH radicals and BPA degradation rate were observed. This research enhances the understanding of HC and its potential for optimized pollution control.

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.