Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Electrical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran.
J Environ Manage. 2022 Feb 1;303:113897. doi: 10.1016/j.jenvman.2021.113897. Epub 2021 Dec 6.
The regulatory control on dyes is an important issue, as their discharge into the environment can pose significant risks to human health. MIL-101(Fe) prepared by a solvothermal method was used as a catalyst to generate sulfate (SO) and hydroxyl (HO) radicals from peroxymonosulfate (PMS) for the treatment of orange G (OG). The structural properties of MIL-101(Fe) were assessed by a number of characterization approaches (e.g., Fourier-transform infrared spectroscopy). The factors controlling the removal of OG were explored by a response surface methodology with central composite design (RSM-CCD) plus adaptive neuro-fuzzy inference system (ANFIS). The synthetized MIL-101(Fe) had uniform octahedral nanocrystals with rough surfaces and porous structures. The maximum catalytic removal efficiency of OG with MIL-101(Fe)/PMS process was 74% (the final concentration of Fe as 0.19 mg/L and reaction rate of 434.2 μmol/g/h). The catalytic removal of OG could be defined by the non-linear kinetic models based on RSM. The OG removal efficiency declined noticeably with the addition of radical scavengers such as ethanol (EtOH) and tert-butanol (TBA) along with some mineral anions. Accordingly, MIL-101(Fe)/PMS is identified as an effective remediation option for the dyes based on advanced oxidation process (AOPs) based on high treatment efficiency at low dosage of low cost catalyst.
染料的监管控制是一个重要问题，因为它们排放到环境中会对人类健康造成重大风险。采用溶剂热法制备的 MIL-101(Fe) 用作催化剂，可从过一硫酸盐 (PMS) 中生成硫酸盐 (SO) 和羟基 (HO) 自由基，用于处理橙 G (OG)。通过多种表征方法（例如傅里叶变换红外光谱）评估了 MIL-101(Fe) 的结构特性。通过响应面法（RSM-CCD）和自适应神经模糊推理系统（ANFIS）探索了控制 OG 去除的因素。合成的 MIL-101(Fe) 具有均匀的八面体形纳米晶体，表面粗糙，具有多孔结构。MIL-101(Fe)/PMS 工艺对 OG 的最大催化去除效率为 74%（最终 Fe 浓度为 0.19 mg/L，反应速率为 434.2 μmol/g/h）。基于 RSM 的非线性动力学模型可以定义 OG 的催化去除。随着自由基清除剂（如乙醇 (EtOH) 和叔丁醇 (TBA)）以及一些矿质阴离子的添加，OG 的去除效率明显下降。因此，MIL-101(Fe)/PMS 被确定为一种有效的染料修复选择，因为其基于高级氧化工艺 (AOP) 的处理效率高，催化剂用量低，成本低。
