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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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.