新型铁锰改性生物炭泡沫混凝土对水体中四环素的去除性能及其作用机制

于书涵; 康道琪; 郭宝磊; 柴伟强; 胡振

doi:10.13205/j.hjgc.202603015

新型铁锰改性生物炭泡沫混凝土对水体中四环素的去除性能及其作用机制

doi: 10.13205/j.hjgc.202603015

1. 山东大学环境科学与工程学院南水北调东线河湖生态健康教育部野外科学观测研究站，山东青岛 266237;
2. 济宁市生态环境局微山县分局，山东济宁 272000

基金项目:

国家自然科学基金项目“光合细菌驱动湿地水-土界面碳素迁移转化的调控机制及其强化策略研究”（52570208）

详细信息

作者简介:
于书涵（2003—），男，硕士研究生，主要研究方向为流域水环境污染治理。202512917@mail.sdu.edu.cn

通讯作者:
胡振（1985—），男，教授，主要研究方向污水处理与资源化。huzhen885@sdu.edu.cn

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出版历程
- 收稿日期: 2026-02-12
- 网络出版日期: 2026-04-11
- 刊出日期: 2026-03-01

Removal performance and mechanism of tetracycline from water bodies by novel iron-manganese modified biochar foam concrete

1. Field Scientific Observation and Research Station of the Ministry of Education for River and Lake Ecological Health in the East Route of South-to-North Water Diversion Project，School of Environmental Science and Engineering，Shandong University，Qingdao 266237，China;
2. Weishan Branch of Jining Ecological Environment Bureau，Jining 272000，China

摘要

摘要: 四环素的广泛使用，导致自然水体中抗生素浓度升高，对水生态系统和公共卫生安全构成严重威胁。金属改性生物炭（IMBC）虽能有效去除四环素，但其粉末形态在使用中易流失，导致利用率降低，还有可能引发系统堵塞。以泡沫混凝土（FC）为固定基质，通过FC与IMBC的复合制备了一种新型铁锰改性生物炭泡沫混凝土（IMBC-FC）。结果表明：固定化过程发生了充分的水化反应，使得IMBC-FC具有高孔隙结构，有效避免了IMBC表面活性位点被遮蔽的问题，其对四环素的去除率达到87.7%，固定化对IMBC去除性能的影响低于10%。去除路径分析结果表明：氧化降解过程对四环素去除的贡献约56.9%，反应体系中的活性氧物种以单线态氧（¹O₂）为主，羟基（—OH）和羧基（—COO^-）等官能团可能参与了ROS生成与电子传递过程。此外，参照水处理滤料及人工湿地填料的相关标准规范，对IMBC-FC的工程应用性能进行了综合评价，发现IMBC-FC在孔隙率、机械强度和四环素去除率等方面均表现优异，具有良好的工程应用前景，可为金属改性生物炭高效固定化应用提供有力的技术路径和理论支撑。
- 铁锰改性生物炭 /
- 泡沫混凝土 /
- 固定化 /
- 四环素 /
- 作用机制
Abstract: The widespread use of tetracycline has resulted in elevated antibiotic concentrations in natural water bodies， posing significant threats to aquatic ecosystems and public health. Although iron-manganese modified biochar （IMBC） can effectively remove tetracycline， its powdered form is prone to leaching during application， leading to reduced utilization efficiency and potential system clogging. In this study， foam concrete （FC） was employed as an immobilization matrix to fabricate a novel iron-manganese modified biochar foam concrete （IMBC-FC） composite. The results showed that sufficient hydration reactions occurred during the immobilization process， endowing IMBC-FC with a highly porous structure that effectively avoided the masking of active sites on IMBC. The tetracycline removal efficiency of IMBC-FC reached 87.7%， and the impact of immobilization on the removal performance of IMBC was less than 10%. Removal pathway analysis indicated that oxidative degradation contributed approximately 56.9% to tetracycline removal， and singlet oxygen （¹O₂） was identified as the dominant reactive oxygen species （ROS） in the system. Functional groups such as hydroxyl （—OH） and carboxyl （—COO^-） generated during hydration likely participated in both ROS generation and electron transfer， thus synergistically facilitating the degradation process. Furthermore， a comprehensive evaluation of the engineering application performance of IMBC-FC was carried out in accordance with relevant standards for water treatment filter media and constructed wetland substrates. The results demonstrated that IMBC-FC exhibits excellent advantages in porosity， mechanical strength， and tetracycline removal efficiency， indicating its promising engineering application prospects. This study is expected to provide a reliable technical pathway and theoretical support for the efficient immobilization of metal-modified biochar.
- iron-manganese modified biochar /
- foam concrete /
- immobilization /
- tetracycline /
- mechanism

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