Investigation of the energy efficiency of the process using photocatalyst-containing droplets

IF 3.7 3区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Research & Design Pub Date : 2025-04-11 DOI:10.1016/j.cherd.2025.04.009

Shoma Kato , Yuka Sakai , Guoqing Guan , Yasuki Kansha

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Abstract

Photocatalytic water treatment processes have been studied because of their strong oxidizing ability and ability to harness sunlight as an energy source. Recent studies have aimed to improve the efficiency of photocatalytic reactions by using droplets containing photocatalysts. However, the energy consumption of the process has not been considered. In this study, we investigated the relationship between the reaction efficiency and energy consumption of the degradation of phenol, as a model compound, using photocatalyst (TiO₂)-containing droplets through variation of the droplet size. First, experiments were conducted to determine the relationship between the degradation of phenol and the droplet diameter. As the droplet diameter decreased, the removal ratio of phenol dramatically increased. Second, the specific energy consumption was calculated using the experimental data and a model of a stationary droplet. The results suggested that there is a minimum specific energy consumption value depending on the balance of the irradiation energy and droplet generation energy.

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利用含光催化剂的液滴进行能量效率的研究

光催化水处理工艺因其具有很强的氧化能力和利用太阳光作为能源的能力而受到广泛的研究。近年来的研究旨在利用含有光催化剂的液滴来提高光催化反应的效率。然而，该过程的能源消耗并没有被考虑在内。在本研究中，我们通过改变光催化剂（TiO2）液滴的大小，研究了光催化剂（TiO2）液滴降解模型化合物苯酚的反应效率与能耗之间的关系。首先，通过实验确定了苯酚的降解与液滴直径的关系。随着液滴直径的减小，苯酚的去除率显著提高。其次，利用实验数据和静止液滴模型计算了比能耗。结果表明，存在一个最小的比能耗值，这取决于辐照能量和液滴产生能量的平衡。

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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来源期刊

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.