Huynh Nguyen Chi, Nguyen Thuy Thi Thanh, Nguyen Duyen Thi Cam, Tran Thuan Van
Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam; Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Viet Nam.
Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Viet Nam.
Chemosphere. 2023 Dec;343:139891. doi: 10.1016/j.chemosphere.2023.139891. Epub 2023 Aug 19.
Cynodon dactylon, an invasive species, exhibits its robust adaptability, reproduction and nutrient regime against the local species. Taking advantage of this harmful grass as a raw precursor to produce valuable materials for wastewater treatment has paid much attention. Herein, we report on the fabrication of Cynodom dactylon derived MgFeO@AC with a main goal of effective removal of ciprofloxacin antibiotic from water. Our findings showed that MgFeO@ACK1 composites attained mesoporous textures, high specific surface areas (884.3-991.6 m g), and MgFeO-20%@ACK1 was the most effective with a very high removal efficiency of 96.7%. The Elovich model was suitable for describing the kinetic of adsorption with (R) of 0.9988. Meanwhile, the isotherm data obeyed the Langmuir model corresponding to (R) of 0.9993. Q value of MgFeO-20%@ACK1 was determined at 211.67 mg g. The proposed adsorption mechanism primarily comprises five routes as follows, (i) pore-filling, (ii) π-π interaction, (iii) electrostatic interaction, (iv) hydrogen bonding, and (v) hydrophobic interaction. MgFeO-20%@ACK1 adsorbent could reuse with three cycles. We recommend that MgFeO/ACs derived from Cynodom dactylon could be high-efficiency adsorbents for the elimination of antibiotics.
狗牙根作为一种入侵物种，相对于本地物种展现出了强大的适应性、繁殖能力和养分机制。利用这种有害杂草作为生产废水处理用珍贵材料的原始前驱体已备受关注。在此，我们报道了以有效去除水中环丙沙星抗生素为主要目标制备狗牙根衍生的MgFeO@AC的过程。我们的研究结果表明，MgFeO@ACK1复合材料具有介孔结构、高比表面积（884.3 - 991.6 m²/g），且MgFeO - 20%@ACK1最为有效，去除效率高达96.7%。Elovich模型适用于描述吸附动力学，相关系数（R）为0.9988。同时，等温线数据符合Langmuir模型，相关系数（R）为0.9993。MgFeO - 20%@ACK1的Q值测定为211.67 mg/g。所提出的吸附机制主要包括以下五条途径：（i）孔隙填充，（ii）π-π相互作用，（iii）静电相互作用，（iv）氢键作用，以及（v）疏水相互作用。MgFeO - 20%@ACK1吸附剂可重复使用三个循环。我们建议由狗牙根衍生的MgFeO/ACs可作为高效吸附剂用于消除抗生素。
