| 张尧,任怀毅,何俊杰,刘光明,张景成,刘晖.氮硼掺杂牛蛙养殖污泥生物炭对四环素的吸附行为[J].农业环境科学学报,2025,44(3):730-740. |
| 氮硼掺杂牛蛙养殖污泥生物炭对四环素的吸附行为 |
| Adsorption performance study of tetracycline in water by nitrogen and boron co-doped bullfrog culture sludge biochar |
| 投稿时间：2024-12-03 |
| DOI：10.11654/jaes.2024-1055 |
| 中文关键词: 氮硼掺杂 生物炭 吸附 四环素 |
| 英文关键词: nitrogen and boron doping biochar adsorption tetracycline |
| 基金项目:广东省重点领域研发计划项目（2023B0202060001）；2024年度广东省农业面源污染监测点项目（渔业）（GDNYHGZX2024027）；云浮市2023年创新团队项目 |
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| 中文摘要: |
| 为实现牛蛙养殖脱水污泥无害化处理，并控制抗生素污染，达到以废治废的目的，本研究以牛蛙养殖脱水污泥为原料，通过氮硼改性，热解制备氮硼掺杂污泥基生物炭（NB-SBC），结果表明：热解温度为900 ℃的改性生物炭对四环素（TC）的吸附能力最强，120 min内，改性生物炭投加量为1 g·L?1时，对20 mg·L?1的TC去除率可达67.34%。与原始生物炭（SBC）相比，通过改性的NBSBC含有丰富的含氧官能团（—COOH、—OH、B—O等），比表面积显著提高833.81%，吸附动力学符合准二级动力学模型，吸附等温线符合Langmuir模型，通过FT-IR和Zeta电位分析吸附机理，结果显示，π-π相互作用与静电相互作用是NB-SBC吸附TC过程中的主要机制。 |
| 英文摘要: |
| To achieve harmless treatment of dehydrated sludge from bullfrog farming, control antibiotic pollution, and achieve the goal of waste treatment using waste, this study uses dehydrated sludge from bullfrog farming as raw material to prepare nitrogen and boron-doped sludge-based biochar（NB-SBC）through pyrolysis modification. The prepared material can effectively remove tetracycline（TC）from water. The results show that compared with the original biochar（SBC）, the modified nitrogen and boron-doped sludge-based biochar（NBSBC）contains a rich oxygen-containing functional groups, and the specific surface area of NB-SBC is significantly increased by 833.81%. The adsorption kinetics follow the pseudo-second-order kinetic model, and the adsorption isotherm conforms to the Langmuir model. The adsorption mechanism is analyzed through FT-IR and Zeta potential analysis, revealing that π-π interactions and electrostatic interactions are the primary mechanisms in the adsorption process of NB-SBC for tetracycline. This study provides a theoretical basis for the resource utilization of bullfrog farming sludge and the practical treatment of wastewater. |
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