江苏农业学报2025，Vol.41Issue(12)：2371-2386,16.DOI:10.3969/j.issn.1000-4440.2025.12.010
磁改性微囊藻基生物炭的制备及其对盐酸四环素的吸附机制
Preparation of magnetically modified Microcystis-based biochar and its ad-sorption mechanism for tetracycline hydrochloride
摘要
Abstract
In this study,Microcystis was used as the raw material,and magnetically modified Microcystis-based bio-char(FeBC)was prepared by loading Fe3O4 nanoparticles via a hydrothermal method,which was applied for the efficient removal of tetracycline hydrochloride(TC)from water.Characterization results showed that FeBC had a specific surface ar-ea of 142.72 m2/g,and its surface was rich in functional groups such as C=O and Fe-O.Compared with unmodified Mi-crocystis-based biochar(BC),the ratios of O/C and(N+O)/C in FeBC increased,indicating enhanced hydrophilicity and polarity.The maximum adsorption ca-pacity of FeBC for TC reached 142.95 mg/g,which was 6.83 times that of BC.The fitting results of the Freundlich isothermal adsorption model and pseudo-second-order ki-netic model indicated that the adsorption process of TC by FeBC was a multi-molecular layer chemical adsorption.Specifi-cally,FeBC adsorbed TC through pore filling,π-π interaction,hydrogen bonding,complexation.The magnetically modi-fied Microcystis-based biochar developed in this study exhibits a simple preparation process,high adsorption capacity and good regenerability,demonstrating significant potential as a novel adsorbent for antibiotic pollution control.关键词
微囊藻/生物炭/磁改性/盐酸四环素/吸附机制Key words
Microcystis/biochar/magnetic modification/tetracycline hydrochloride/adsorption mechanism分类
资源环境引用本文复制引用
邬旻昊辰,梁庆华,阮晓雨,苗玉杰,卢信,邓建才..磁改性微囊藻基生物炭的制备及其对盐酸四环素的吸附机制[J].江苏农业学报,2025,41(12):2371-2386,16.基金项目
国家自然科学基金面上项目(32371648) （32371648）
