Removal of a Contaminant of Emerging Concern by Heterogeneous Catalytic Ozonation Process with a Novel Nano Bimetallic Catalyst Embedded on Activated Carbon

IF 2.1 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Ozone: Science & Engineering Pub Date : 2022-08-22 DOI:10.1080/01919512.2022.2114419

Hariprasad Pokkiladathu, Salman Farissi, A. Muthukumar, Muthukumar Muthuchamy

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引用次数: 2

Abstract

ABSTRACT Organic contaminants such as Bisphenol A are classified as Contaminants of Emerging Concern (CECs). The inability of conventional water and wastewater treatments to remove CECs has made Advanced Oxidation Processes (AOPs) attractive for their removal from water sources. Oxidation species such as hydroxyl radicals are produced by AOPs that degrades and mineralize CECs found in water and wastewater. The present study focuses on using heterogeneous nano-metallic oxide embedded activated carbon (AC) for degrading Bisphenol-A (BPA) present in the water. The catalytic ozonation process was carried out using AC/Cu2O/ZnO as the catalyst. The bimetallic catalyst was characterized using BET, XRD, FESEM, Raman Spectra, and DLS. Total organic carbon (TOC) removal was 19% higher for catalytic ozonation when compared with non-catalytic ozonation. HPLC studies found that BPA was removed by 98%. The optimal conditions for degradation were 650 µg/L, pH 8 and 60 minutes. LC-MS/LC-Q-TOF was utilized to find the degradation pathway.

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活性炭包埋纳米双金属催化剂对非均相臭氧氧化法去除污染物的研究

双酚A等有机污染物被列为新兴关注污染物(CECs)。传统的水和废水处理方法无法去除CECs，这使得高级氧化工艺(AOPs)成为从水源中去除CECs的热门技术。氧化物质如羟基自由基是由AOPs产生的，AOPs可以降解和矿化水和废水中的CECs。本文研究了非均相纳米金属氧化物包埋活性炭(AC)对水中双酚a (BPA)的降解作用。以AC/Cu2O/ZnO为催化剂，进行了催化臭氧化反应。采用BET、XRD、FESEM、拉曼光谱和DLS对催化剂进行了表征。与非催化臭氧化相比，催化臭氧化的总有机碳(TOC)去除率高19%。HPLC研究发现BPA被去除了98%。最佳降解条件为650µg/L, pH为8,60 min。采用LC-MS/LC-Q-TOF法寻找降解途径。

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来源期刊

Ozone: Science & Engineering 环境科学-工程：环境

CiteScore

5.90

自引率

11.10%

发文量

审稿时长

2 months

期刊介绍： The only journal in the world that focuses on the technologies of ozone and related oxidation technologies, Ozone: Science and Engineering brings you quality original research, review papers, research notes, and case histories in each issue. Get the most up-to date results of basic, applied, and engineered research including: -Ozone generation and contacting- Treatment of drinking water- Analysis of ozone in gases and liquids- Treatment of wastewater and hazardous waste- Advanced oxidation processes- Treatment of emerging contaminants- Agri-Food applications- Process control of ozone systems- New applications for ozone (e.g. laundry applications, semiconductor applications)- Chemical synthesis. All submitted manuscripts are subject to initial appraisal by the Editor, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees.