Bian Shiyu, Cai Zhuoyu, Xing Weinan, Zhao Chunyu, Pan Yuwei, Han Jiangang, Wu Guangyu, Huang Yudong
College of Ecology and Environment, Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China.
School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271016, China.
Environ Res. 2025 Mar 1;268:120785. doi: 10.1016/j.envres.2025.120785. Epub 2025 Jan 10.
In recent years, the accumulation of waste plastics and emergence plastic-derived pollutants such as microplastics have driven significantly the development and updating of waste plastic utilization technology. This study prepared the porous carbon (PC-1-KOH) material directly from polyethylene terephthalate (PET) in waste plastic bottles using KOH activation and molten salt strategy for efficient removal of antibiotic tetracycline (TC). The maximum removal efficiency of TC was 100.0% with a PC-1-KOH weight of 20 mg. In addition, the TC removal efficiency stayed over 80.0% within the rage of pH of 3-9 and different water bodies. The adsorption process was described by the Pseudo-second-order kinetic model and the Langmuir isotherm, suggesting that the adsorption of TC was predominantly chemical in nature and occurred on a homogeneous surface. The pores filling, hydrogen bonding, π-π stacking interactions and electrostatic interaction are the main mechanisms of TC adsorption. This work demonstrates a sustainable approach to converting plastic waste derived materials into functional materials for effective pollution removal and environmental remediation.
近年来，废塑料的积累以及微塑料等塑料衍生污染物的出现极大地推动了废塑料利用技术的发展和更新。本研究采用KOH活化和熔盐策略，直接从废塑料瓶中的聚对苯二甲酸乙二酯（PET）制备了多孔碳（PC-1-KOH）材料，用于高效去除抗生素四环素（TC）。当PC-1-KOH重量为20 mg时，TC的最大去除效率为100.0%。此外，在pH值为3-9的范围内以及不同水体中，TC去除效率保持在80.0%以上。吸附过程由准二级动力学模型和朗缪尔等温线描述，表明TC的吸附主要是化学吸附，且发生在均匀表面上。孔隙填充、氢键、π-π堆积相互作用和静电相互作用是TC吸附的主要机制。这项工作展示了一种可持续的方法，即将塑料废料衍生材料转化为功能性材料，以有效去除污染和进行环境修复。
