高效活化 N 和 S 共掺磁性生物炭，促进过硫酸单胞菌降解四环素

IF 1.8 4区工程技术 Q3 Chemical Engineering

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-09-15 DOI:10.1002/apj.3156

Xi Zhang, Haoyuan Zheng, Hong Xu, Jie Huang, Qianyuan Mo, Guishang Sheng

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引用次数: 0

摘要

通过两步热解技术合成了 N-S 共掺杂磁性生物炭（NSMBC），并将其用于活化过硫酸盐（过硫酸单胞菌 [PMS]）降解四环素（TC）。批量实验结果表明，热解温度和掺杂率会影响 NSMBC 的催化性能。掺杂比为 33% 的 NSMBC/PMS 体系在 350°C 下的 TC 降解率高达 94.50%，且该体系具有较强的 pH 适应性和抗环境干扰能力。自由基猝灭和电子顺磁共振（EPR）光谱实验结果表明，自由基（SO4--）是降解 TC 的途径。此外，NSMBC 具有良好的稳定性和优异的磁性，有利于分离和回收。这项研究不仅为合成高效稳定的催化剂提供了新思路，也为柚子皮废弃物的资源化提供了一条绿色通道。

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Efficient activation of N and S co-doped magnetic biochar for peroxomonosulfate degradation of tetracycline

N-S co-doped magnetic biochar (NSMBC) was synthesized by a two-step pyrolysis technique and used for the degradation of tetracycline (TC) by activated persulfate (peroxomonosulfate [PMS]). Batch experiments showed that the pyrolysis temperature and doping ratio affected the catalytic performance of NSMBC. The degradation rate of TC in the NSMBC/PMS system prepared at 350°C with a doping ratio of 33% was up to 94.50%, and the system exhibited strong pH adaptability and resistance to environmental interference. The results of free radical burst and electron paramagnetic resonance (EPR) spectroscopy experiments indicated the free radical pathway (SO₄^•−) for TC degradation. In addition, NSMBC has good stability and excellent magnetic properties favorable for separation and recovery. This study not only provides a new idea for the synthesis of efficient and stable catalysts but also provides a green pathway for the resourceization of pomelo peel waste.

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来源期刊

Asia-Pacific Journal of Chemical Engineering 工程技术-工程：化工

CiteScore

3.50

自引率

11.10%

发文量

111

审稿时长

2.8 months

期刊介绍： Asia-Pacific Journal of Chemical Engineering is aimed at capturing current developments and initiatives in chemical engineering related and specialised areas. Publishing six issues each year, the journal showcases innovative technological developments, providing an opportunity for technology transfer and collaboration. Asia-Pacific Journal of Chemical Engineering will focus particular attention on the key areas of: Process Application (separation, polymer, catalysis, nanotechnology, electrochemistry, nuclear technology); Energy and Environmental Technology (materials for energy storage and conversion, coal gasification, gas liquefaction, air pollution control, water treatment, waste utilization and management, nuclear waste remediation); and Biochemical Engineering (including targeted drug delivery applications).