Preparation of CuO/Activated Carbon Fiber Filter for Adsorption/Catalytic Degradation of Residual Chlorine in Drinking Water

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2024-09-13 DOI:10.1007/s10562-024-04829-1

Jiayi Meng, Hengliang Mo, Tianyu Li, Manman Liu, Yili Chen, Suoding Li, Pingyu Wan, Long Lv, Hengyu Yang, Wenfang Zhao, Luocong Wang

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Abstract

Residual chlorine has a bactericidal effect, but it may react with natural organic matter in water to produce harmful substances. In this work, we report an efficient residual chlorine removal filter with activated carbon fiber (ACF) as adsorption carrier and CuO as residual chlorine degradation catalyst. Experimental results show that CuO has high catalytic efficiency and no attenuation of catalytic performance in 2924 h. The CuO is loaded on the surface of ACF by dipping-calcinating method. When the loading rate is 1.5%, the CuO distribution is uniform without defects and agglomeration. Continuous-flow experiment result shows that 1.5%-CuO/ACF filter can treat water amount 2.2 times as long as that for single ACF filter (residual chlorine concentration < 0.1 mg/L). Weak acidity and rising temperature can improve the reaction activity and increase the degradation amount of residual chlorine. The composite filter has excellent adsorption performance for Cu²⁺, showing the Cu²⁺ concentration in the produced water is less than 0.1 mg/L after filter treatment, which is in line with the National Drinking Water Standards, and in agreement with the Standard for Safety Assessment of Water Transmission and Distribution Equipment and Protective Materials for Drinking Water (GB/T17219-1998) of Immersion Experiment, indicating that 1.5%-CuO/ACF filter has good stability and safety.

Graphical Abstract

Abstract Image

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制备用于吸附/催化降解饮用水中余氯的氧化铜/活性碳纤维过滤器

余氯具有杀菌作用，但它可能与水中的天然有机物发生反应，产生有害物质。在这项工作中，我们报告了一种以活性炭纤维（ACF）为吸附载体、以 CuO 为余氯降解催化剂的高效余氯去除过滤器。实验结果表明，CuO 具有很高的催化效率，在 2924 h 内催化性能无衰减。当负载率为 1.5% 时，CuO 分布均匀，无缺陷和团聚。连续流实验结果表明，1.5%-CuO/ACF 过滤器的处理水量是单一 ACF 过滤器的 2.2 倍（余氯浓度为 0.1 mg/L）。弱酸性和温度升高可提高反应活性，增加余氯的降解量。复合滤池对Cu2+具有良好的吸附性能，滤池处理后产水Cu2+浓度小于0.1 mg/L，符合国家饮用水标准，也符合《生活饮用水输配水设备及防护材料安全评价标准》（GB/T17219-1998）浸泡实验的要求，表明1.5%-CuO/ACF滤池具有良好的稳定性和安全性。

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.