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

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
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.
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。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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