铁/锰/铜/电气石类 Fenton- 型催化剂的制备及其降解模拟电镀废水中有机磷阻垢剂的机理

IF 4.9 2区 化学 Q2 CHEMISTRY, PHYSICAL
Song Song , Yihe Qin , Suran Huang , Haiming Huang , Yuancai Chen
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引用次数: 0

摘要

在类芬顿反应过程中,稳定高效的催化剂对于提高难降解有机污染物的降解效率非常重要。本研究采用浸渍煅烧法合成了Fe/Mn/Cu电气石类Fenton催化剂,并利用合成的催化剂降解了模拟电镀废水中的羟基乙烯二磷酸(HEDP)。通过 X 射线光电子能谱 (XPS)、X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和 Brunauer-Emmett-Teller 氮吸附解吸法分析了合成催化剂的理化性质。采用单因素法和中心复合响应面法研究了 pH 值、催化剂添加量、过氧化氢浓度和反应温度等参数对 HEDP 去除效率的影响。在最佳条件下,有机磷到无机磷的转化效率为 86.79%。电子顺磁共振结果表明,反应体系中的羟基和超氧自由基等活性氧物种是高效降解 HEDP 的主要决定因素。随后,研究了不同混凝剂(氯化铁和氯化钙)在模拟废水降解后对磷酸盐的回收效果。铁基混凝剂显示出更好的回收效果(pH 值为 7.5,93.71%)。这些结果表明,铁/锰/铜/电气石类 Fenton 催化剂具有良好的重复利用性、较高的催化活性,在废水处理中具有广阔的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation of Fe/Mn/Cu/tourmaline Fenton-like catalyst and the mechanism for degrading organic phosphorous scale inhibitors in simulated electroplating wastewater
In Fenton-like reaction process, stable and efficient catalysts are very important to improve the degradation efficiency of refractory organic pollutants. In this study, Fe/Mn/Cu tourmaline Fenton-like catalyst were synthesized using an impregnation calcination method, and hydroxyethylene diphosphate (HEDP) in simulated electroplating wastewater was degraded using the synthesized catalyst. The physicochemical properties of the synthesized catalysts were analyzed by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller nitrogen adsorption desorption. The effects of parameters such as pH, catalyst addition, hydrogen peroxide concentration, and reaction temperature on the efficiency of HEDP removal were investigated using a single-factor method and central composite response surface methodology. Under optimal conditions, the conversion efficiency of organic to inorganic phosphorous was 86.79 %. The electron paramagnetic resonance results indicated that active oxygen species, such as hydroxyl and superoxide radicals, in the reaction system are the primary determinants of the efficient degradation of HEDP. Subsequently, the recovery effects of different coagulants (iron chloride and calcium chloride) on phosphate after simulated wastewater degradation were investigated. Iron-based coagulants showed better recovery effects (pH 7.5, 93.71 %). These results show that Fe/Mn/Cu/tourmaline Fenton-like catalyst have good reusability, high catalytic activity, and broad application prospects in wastewater treatment.
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来源期刊
CiteScore
8.70
自引率
9.60%
发文量
2421
审稿时长
56 days
期刊介绍: Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.
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