College of Chemistry and Molecular Sciences, Henan University, Kaifeng, 475004, China; Miami College, Henan University, Kaifeng, 475004, China.
College of Chemistry and Molecular Sciences, Henan University, Kaifeng, 475004, China; Miami College, Henan University, Kaifeng, 475004, China; Huaxia Besince Environmental Technology Co., Ltd., Zhengzhou, 450018, China.
Chemosphere. 2024 Sep;364:143215. doi: 10.1016/j.chemosphere.2024.143215. Epub 2024 Aug 28.
Using biochar for dye wastewater treatment is attracting interest due to its excellent adsorption properties and low costs. In this work, a novel biochar derived from oxytetracycline fermentation residue (functionalized OFR biochar, FOBC) was investigated as a efficient adsorbent for typical dyes removal. At 25 °C, the maximum adsorption capacity calculated by Langmuir model of FOBC-3-600 for methylene blue (MB), malachite green (MG), and methyl orange (MO) reached 643.97, 617.89, and 521.03 mg/g, respectively. The kinetics and isotherm model fitting showed that the chemisorption and physisorption both occurred during the adsorption process. Dyes were efficiently adsorbed through pore filling, electrostatic attraction, π-π interactions, and surface complexation. And the cycling experiment and environmental risk assessment indicated that the FOBC-3-600 had excellent recyclability and utilization safety. Overall, this study provides a practical method to simultaneously treat the dyeing wastewater and utilize the antibiotic fermentation residue.
利用生物炭处理染料废水因其具有优异的吸附性能和低成本而受到关注。在这项工作中，研究了一种新型的由土霉素发酵残渣制备的生物炭（功能化 OFR 生物炭，FOBC），作为去除典型染料的高效吸附剂。在 25°C 下，FOBC-3-600 对亚甲蓝（MB）、孔雀石绿（MG）和甲基橙（MO）的最大吸附容量通过朗缪尔模型计算分别达到 643.97、617.89 和 521.03 mg/g。动力学和等温线模型拟合表明，吸附过程中同时发生了化学吸附和物理吸附。染料通过孔填充、静电吸引、π-π 相互作用和表面络合进行有效吸附。并且循环实验和环境风险评估表明，FOBC-3-600 具有良好的可回收性和利用安全性。总的来说，这项研究提供了一种同时处理印染废水和利用抗生素发酵残渣的实用方法。
