Photodegradation of antihistamine chlorpheniramine using a novel iron-incorporated carbon material and solar radiation,Environmental Science: Water Research & Technology

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Photodegradation of antihistamine chlorpheniramine using a novel iron-incorporated carbon material and solar radiation
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2020-08-11 , DOI: 10.1039/d0ew00413h
A. F. Mar-Ortiz _{1,

2,

3,

4,

5} , J. J. Salazar-Rábago _{1,

2,

3,

4} , M. Sánchez-Polo _{5,

6,

7,

8,

9} , M. Rozalen _{5,

6,

7,

8,

9} , F. J. Cerino-Córdova _{4,

10,

11,

12} , M. Loredo-Cancino _{1,

2,

3,

4}

Affiliation

Water pollution due to emerging contaminants is a topic that should be researched to a greater extent because of the ignorance of adverse effects these pollutants may have on living beings. For this reason, the implementation of tertiary treatments is important for the removal of these contaminants from aqueous effluents including the heterogeneous photo-Fenton like (HPFL) process. In this investigation, an organic carbon xerogel incorporated with Fe³⁺ (XFe) has been used as a photocatalyst for the degradation of the antihistamine chlorpheniramine in an aqueous media with pH 3 at room temperature. The characterization of the material revealed the presence of Fe(III) and oxygenated groups on the surface as well as its ability to be activated with visible radiation, thereby, making it a viable material for the oxidation of contaminants present in the aqueous phase. The kinetic study has revealed that the degradation kinetic constants were 4.20 × 10⁻¹ min⁻¹ and 1.57 × 10⁻³ min⁻¹ for HPFL and photolysis processes, respectively, revealing that the oxidation process is favored in the presence of the carbonaceous material. The by-products derived from various post-degradation processes presented low toxicity when verified by cytotoxicity tests. Moreover, the catalyst activation mechanism demonstrated that the process occurs through the formation of the ˙HO radical. In conclusion, the HPFL process was the most feasible for the degradation of chlorpheniramine in aqueous media, as it had greater interaction with the ˙HO radical in the rupture of the contaminant.

中文翻译：

新型铁结合碳材料和太阳辐射对抗组胺氯苯那敏的光降解

由于不了解这些污染物可能对生物造成的不利影响，因此应优先研究由于新兴污染物引起的水污染。由于这个原因，第三级处理的实施对于从包括异质光芬顿样（HPFL）工艺在内的水性废水中去除这些污染物很重要。在该研究中，掺有Fe ³⁺（XFe）的有机碳干凝胶已用作光催化剂，用于在室温下在pH为3的水性介质中降解抗组胺氯苯那敏。该材料的表征表明存在Fe（III）和表面上的氧化基团以及其被可见辐射活化的能力，从而使其成为氧化存在于水相中的污染物的可行材料。动力学研究表明，降解动力学常数为4.20×10 ^-1 min ^-1和1.57×10 ^-3 min ^-1分别针对HPFL和光解过程，发现碳质材料的存在有利于氧化过程。经细胞毒性测试证实，衍生自各种降解后过程的副产物毒性较低。此外，催化剂活化机理表明该过程是通过˙HO自由基的形成而发生的。总之，对于在水中介质中扑尔敏进行降解，HPFL工艺是最可行的，因为它在污染物破裂时与˙HO自由基具有更大的相互作用。

更新日期：2020-08-27

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