Degradation of bentazon herbicide by heterogeneous catalytic ozonation with ZnO-scallop shell nanocomposite: kinetic, reaction pathways and mineralization

2019 ◽  
Vol 138 ◽  
pp. 237-247
Author(s):  
Neda Karami ◽  
Azita Mohagheghian ◽  
Mehdi Shirzad-Siboni ◽  
Kazem Godini
Keyword(s):  
Catalytic Ozonation ◽  
Reaction Pathways ◽  
Scallop Shell ◽  
Kinetic Reaction ◽  
Heterogeneous Catalytic

scholarly journals Enhanced catalytic ozonation of ibuprofen using a 3D structured catalyst with MnO2 nanosheets on carbon microfibers

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Guhankumar Ponnusamy ◽  
Hajar Farzaneh ◽  
Yongfeng Tong ◽  
Jenny Lawler ◽  
Zhaoyang Liu ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Active Sites ◽  
Low Cost ◽  
Three Dimensional ◽  
Industrial Applications ◽  
Catalytic Ozonation ◽  
Heterogeneous Catalytic ◽  
Structured Catalyst ◽  
Dimensional Network ◽  
Carbon Microfibers

AbstractHeterogeneous catalytic ozonation is an effective approach to degrade refractory organic pollutants in water. However, ozonation catalysts with combined merits of high activity, good reusability and low cost for practical industrial applications are still rare. This study aims to develop an efficient, stable and economic ozonation catalyst for the degradation of Ibuprofen, a pharmaceutical compound frequently detected as a refractory pollutant in treated wastewaters. The novel three-dimensional network-structured catalyst, comprising of δ-MnO2 nanosheets grown on woven carbon microfibers (MnO2 nanosheets/carbon microfiber), was synthesized via a facile hydrothermal approach. Catalytic ozonation performance of Ibuprofen removal in water using the new catalyst proves a significant enhancement, where Ibuprofen removal efficiency of close to 90% was achieved with a catalyst loading of 1% (w/v). In contrast, conventional ozonation was only able to achieve 65% removal efficiency under the same operating condition. The enhanced performance with the new catalyst could be attributed to its significantly increased available surface active sites and improved mass transfer of reaction media, as a result of the special surface and structure properties of this new three-dimensional network-structured catalyst. Moreover, the new catalyst displays excellent stability and reusability for ibuprofen degradation over successive reaction cycles. The facile synthesis method and low-cost materials render the new catalyst high potential for industrial scaling up. With the combined advantages of high efficiency, high stability, and low cost, this study sheds new light for industrial applications of ozonation catalysts.

Heterogeneous catalytic ozonation of p-chloronitrobenzene (pCNB) in water with iron silicate doped hydroxylation iron as catalyst

2017 ◽  
Vol 89 ◽  
pp. 81-85 ◽  
Author(s):  
Yue Liu ◽  
Shiyuan Wang ◽  
Weijin Gong ◽  
Zhonglin Chen ◽  
Haifang Liu ◽  
...  
Keyword(s):  
Catalytic Ozonation ◽  
Iron Silicate ◽  
Heterogeneous Catalytic

Production of clinoptilolite nanorods by glow discharge plasma technique for heterogeneous catalytic ozonation of nalidixic acid

RSC Advances ◽  
2016 ◽  
Vol 6 (25) ◽  
pp. 20858-20866 ◽  
Author(s):  
Alireza Khataee ◽  
Tannaz Sadeghi Rad ◽  
Mehrangiz Fathinia ◽  
Sang Woo Joo
Keyword(s):  
Glow Discharge ◽  
Nalidixic Acid ◽  
Discharge Plasma ◽  
Catalytic Ozonation ◽  
Glow Discharge Plasma ◽  
Acid Degradation ◽  
Heterogeneous Catalytic ◽  
Plasma Technique

This study investigates nalidixic acid degradationviaheterogeneous catalytic ozonation using clinoptilolite nanorods (CNs) as a novel nanocatalyst.

scholarly journals Application of Heterogeneous Catalytic Ozonation for Refractory Organics in Wastewater

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 241 ◽  
Author(s):  
Bing Wang ◽  
Huan Zhang ◽  
Feifei Wang ◽  
Xingaoyuan Xiong ◽  
Kun Tian ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Advanced Oxidation Processes ◽  
Carbon Materials ◽  
Catalytic Ozonation ◽  
Pollutant Removal ◽  
Oxidation Processes ◽  
Heterogeneous Catalytic ◽  
The Past ◽  
Theoretical Support ◽  
Refractory Organics

Catalytic ozonation is believed to belong to advanced oxidation processes (AOPs). Over the past decades, heterogeneous catalytic ozonation has received remarkable attention as an effective process for the degradation of refractory organics in wastewater, which can overcome some disadvantages of ozonation alone. Metal oxides, metals, and metal oxides supported on oxides, minerals modified with metals, and carbon materials are widely used as catalysts in heterogeneous catalytic ozonation processes due to their excellent catalytic ability. An understanding of the application can provide theoretical support for selecting suitable catalysts aimed at different kinds of wastewater to obtain higher pollutant removal efficiency. Therefore, the main objective of this review article is to provide a summary of the accomplishments concerning catalytic ozonation to point to the major directions for choosing the catalysts in catalytic ozonation in the future.

Degradation of phenol with heterogeneous catalytic ozonation enhanced by high gravity technology

2020 ◽  
Vol 248 ◽  
pp. 119179 ◽  
Author(s):  
Xingyue Wei ◽  
Shengjuan Shao ◽  
Xin Ding ◽  
Weizhou Jiao ◽  
Youzhi Liu
Keyword(s):  
Catalytic Ozonation ◽  
High Gravity ◽  
Heterogeneous Catalytic

Heterogeneous Catalytic Ozonation of Refinery Wastewater over Alumina-Supported Mn and Cu Oxides Catalyst

2015 ◽  
Vol 37 (6) ◽  
pp. 546-555 ◽  
Author(s):  
Fengxia Deng ◽  
Shan Qiu ◽  
Cong Chen ◽  
Xiao Ding ◽  
Fang Ma
Keyword(s):  
Catalytic Ozonation ◽  
Refinery Wastewater ◽  
Heterogeneous Catalytic

Nanocarbon-Based Catalytic Ozonation for Aqueous Oxidation: Engineering Defects for Active Sites and Tunable Reaction Pathways

ACS Catalysis ◽  
2020 ◽  
Vol 10 (22) ◽  
pp. 13383-13414
Author(s):  
Yuxian Wang ◽  
Xiaoguang Duan ◽  
Yongbing Xie ◽  
Hongqi Sun ◽  
Shaobin Wang
Keyword(s):  
Active Sites ◽  
Catalytic Ozonation ◽  
Reaction Pathways ◽  
Aqueous Oxidation
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