Iron and nitrogen co-doped biochar membrane for SMX removal in water by filtration and catalytic oxidation

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2024-11-16 DOI:10.1016/j.seppur.2024.130562

Hongyu Liu, Fengqing Xin, Xin Wen, Huan Zhang, Huicai Wang, Junfu Wei

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引用次数: 0

Abstract

Iron and nitrogen co-doped biochar membrane (Fe/N/BC membrane) was fabricated. Epoxy resin was used as a binder, 4,4́-diaminodiphenylmethane as curing agent, and polyethylpyrrolidone as pore-making agent, respectively. The Fe/N/BC membrane showed excellent performance of filtration and catalytic oxidative removal of sulfamethoxazole (SMX) in water and its water flux was 127 L·m⁻²·h⁻¹·bar⁻¹. The Fe/N/BC membrane had a good application prospect in a wide pH range (both acidic and neutral conditions). The contribution of Fe doping was higher than that of N doping in the SO₄^{• −} and ·OH radicals generation pathways but the contribution of N doping is higher than that of Fe doping for the ¹O₂ non-radical generation pathway. Finally, the membrane facilitates the recovery of catalytic materials and solves the problem of secondary pollution to the environment. This study provides an important practical prospect for efficient and rapid removal of SMX in water.

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铁氮共掺生物炭膜通过过滤和催化氧化去除水中的 SMX

制备了铁氮共掺生物炭膜（Fe/N/BC 膜）。分别采用环氧树脂作为粘结剂，4,4-二氨基二苯甲烷作为固化剂，聚乙基吡咯烷酮作为造孔剂。Fe/N/BC膜在过滤和催化氧化去除水中磺胺甲噁唑（SMX）方面表现优异，其水通量为127 L-m-2-h-1-bar-1。Fe/N/BC 膜在很宽的 pH 值范围（酸性和中性条件）内都有很好的应用前景。在 SO4 - 和 -OH 自由基生成途径中，掺杂铁的贡献率高于掺杂氮的贡献率，但在 1O2 非自由基生成途径中，掺杂氮的贡献率高于掺杂铁的贡献率。最后，该膜有利于催化材料的回收，并解决了对环境的二次污染问题。这项研究为高效、快速去除水中的 SMX 提供了重要的实用前景。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.