Lab-scale tubular LED UV reactor for continuous photocatalysis

IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

HardwareX Pub Date : 2023-12-20 DOI:10.1016/j.ohx.2023.e00506

Stefan Herrmann , Lukas T. Hirschwald , Karl H. Heidmann , John Linkhorst , Matthias Wessling

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Abstract

Photocatalytic water treatment is considered a promising technique to prevent micropollutants from entering the environment. However, no off-the-shelf UV reactors on lab scale are available to study new processes and photocatalysts. In this study, we present a tubular UV reactor equipped with 30 UV-LEDs, emitting UV light at 367 nm and a total radiant flux of 42 W. The UV reactor has an irradiated length of 300 mm and can host any transparent chemical reactor on the inside with a maximum diameter of 28 mm. The device is optimized for lab experiments with total dimensions of just 334 mm x 193 mm x 172 mm. Besides water treatment, a broad range of other photochemical and photocatalytic experiments can be performed with the reactor. Two identical UV reactors have been built and are successfully used for photocatalytic water treatment experiments. The degradation of methylene blue with TiO₂ as photocatalyst was studied to validate the UV reactor. Furthermore, photocatalytic and hybrid processes were conducted in the UV reactor to degrade a broad range of pharmaceutical micropollutants.

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用于连续光催化的实验室规模管式 led 紫外反应器

光催化水处理被认为是防止微污染物进入环境的一项前景广阔的技术。然而，目前还没有实验室规模的现成紫外线反应器来研究新工艺和光催化剂。在这项研究中，我们提出了一种管状紫外反应器，它配备了 30 个紫外发光二极管，发射波长为 367 纳米的紫外光，总辐射通量为 42 瓦。紫外反应器的照射长度为 300 毫米，内部可容纳任何最大直径为 28 毫米的透明化学反应器。该设备专为实验室实验而优化，总尺寸仅为 334 毫米 x 193 毫米 x 172 毫米。除水处理外，该反应器还可进行其他各种光化学和光催化实验。我们已经建造了两个相同的紫外反应器，并成功用于光催化水处理实验。以二氧化钛为光催化剂的亚甲基蓝降解研究验证了紫外反应器。此外，还在紫外反应器中进行了光催化和混合处理，以降解多种药物微污染物。

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

HardwareX Engineering-Industrial and Manufacturing Engineering

CiteScore

4.10

自引率

18.20%

发文量

124

审稿时长

24 weeks

期刊介绍： HardwareX is an open access journal established to promote free and open source designing, building and customizing of scientific infrastructure (hardware). HardwareX aims to recognize researchers for the time and effort in developing scientific infrastructure while providing end-users with sufficient information to replicate and validate the advances presented. HardwareX is open to input from all scientific, technological and medical disciplines. Scientific infrastructure will be interpreted in the broadest sense. Including hardware modifications to existing infrastructure, sensors and tools that perform measurements and other functions outside of the traditional lab setting (such as wearables, air/water quality sensors, and low cost alternatives to existing tools), and the creation of wholly new tools for either standard or novel laboratory tasks. Authors are encouraged to submit hardware developments that address all aspects of science, not only the final measurement, for example, enhancements in sample preparation and handling, user safety, and quality control. The use of distributed digital manufacturing strategies (e.g. 3-D printing) is encouraged. All designs must be submitted under an open hardware license.