向日葵秸秆的水热和热解转化为新型多孔生物炭，用于高效吸附四环素。
Hydrothermal and pyrolytic conversion of sunflower seed husk into novel porous biochar for efficient adsorption of tetracycline.
机构信息
Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan.
出版信息
Bioresour Technol. 2023 Apr;373:128711. doi: 10.1016/j.biortech.2023.128711. Epub 2023 Feb 10.
In this study, sunflower seed husk biochar prepared by ZnCl-activated and hydrothermal carbonization (HZSF) was studied for its effectiveness in removing tetracycline (TC) from an aqueous solution. The physical and chemical properties of materials were characterized by different methods of surface analysis. The specific surface area of HZSF is significantly enhanced over 1200 times compared with non-modified biochar (HZSF: 1578.3 m·g, SF-700: 1.3 m·g), which has an enhancement effect on the TC adsorption capacity. The HZSF showed that the Langmuir isotherm and pseudo-second-order kinetic models could properly characterize the adsorption processes. In the Langmuir isotherm model, HZSF exhibited effective adsorption performance with q of 673.0 mg·g at 298 K for 24 h. The possible mechanisms for the adsorption process were the monolayer, chemical adsorption, and the participation of strong intermolecular forces. In general, HZSF has the potential to be a useful adsorbent for the elimination of antibiotics from water-based solutions.
在这项研究中，研究了由 ZnCl 激活和水热碳化（HZSF）制备的葵花籽壳生物炭去除水溶液中四环素（TC）的效果。通过不同的表面分析方法对材料的物理化学性质进行了表征。与未改性生物炭（HZSF：1578.3 m·g，SF-700：1.3 m·g）相比，HZSF 的比表面积显著提高了 1200 多倍，这对 TC 的吸附容量有增强作用。HZSF 表明，Langmuir 等温线和拟二级动力学模型可以很好地描述吸附过程。在 Langmuir 等温线模型中，HZSF 在 298 K 下 24 h 时表现出有效的吸附性能，q 值为 673.0 mg·g。吸附过程的可能机制是单层、化学吸附和强分子间力的参与。总的来说，HZSF 有可能成为一种从水基溶液中消除抗生素的有用吸附剂。
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