The Study of Catalytic Oxidation of NOx Using Mn3O4/GO/PMS

2013 ◽  
Vol 834-836 ◽  
pp. 458-461
Author(s):  
Xiu Zhi Sun ◽  
Deng Xin Li
Keyword(s):  
Graphene Oxide ◽  
Manganese Oxide ◽  
Catalytic Oxidation ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Catalyst System ◽  
Sulfate Radicals ◽  
Waste Gas

The catalytic oxidation of NOx from waste gas was investigated using advanced oxidation process based on sulfate radicals. The manganese oxide immobilized on graphene oxide (GO) can activate peroxymonosulfate (PMS) for the oxidation of NOx in water. The Mn3O4/GO catalyst system exhibited efficient activity for NOx oxidation when the Mn3O4/GO catalyst loaded an optimum Mn3O4. In addition, 52.28% oxidation could be achieved within 60 min with 0.25 mM catalyst, and 2 mM PMS. Therefore, the results may have significant technical implication for utilizing Mn2+/PMS to oxidize NOx for offgas treatment.

An Environment-Friendly Method to Catalytically Oxidate NO in Waste Water by Supported Manganese Oxide on Graphite Oxide

2015 ◽  
Vol 768 ◽  
pp. 3-9 ◽  
Author(s):  
Rui Jing Su ◽  
Min Cong Zhu ◽  
Xiu Zhi Sun ◽  
Jie Guan
Keyword(s):  
Manganese Oxide ◽  
Catalytic Oxidation ◽  
High Efficiency ◽  
Advanced Oxidation Process ◽  
Catalyst System ◽  
Complex Compounds ◽  
No Oxidation ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Oxidation Of No

In order to generate powerful radicals as oxidizing species for the complete oxidation of NO, homogeneous activation of peroxymonosulfate (Oxone: PMS) by the Mn3O4/GO catalysts was explored. The catalytic oxidation of NO from waste gas was investigated using advanced oxidation process based on sulfate radicals that produced. The manganese oxide immobilized on graphene oxide (GO) can activate PMS for the oxidation of NO in water. We not only took advantage of the high oxidation–reduction potential of produced sulfite radicals but also an opportunity to oxidize NO on less complex compounds with low dosages. The Mn3O4/GO catalysis system was characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that Mn3O4was well-distributed on GO. The Mn3O4/GO catalyst system exhibited high efficiency for NO oxidation when the Mn3O4/GO catalyst has an optimum Mn3O4loading. In addition, the best catalytic oxidation can be achieved within 30 min with pH 4 and 6 mM PMS at 25 °C. Therefore, the results indicate promising potential for a system utilizing Mn3O4/PMS to oxidize NO for offgas treatment.

scholarly journals Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H+) reaction for the treatment of dye wastewater

RSC Advances ◽  
2019 ◽  
Vol 9 (64) ◽  
pp. 37562-37572
Author(s):  
Rafia Azmat ◽  
Anum Khursheed ◽  
Ailyan Saleem ◽  
Noshab Qamer
Keyword(s):  
Catalytic Oxidation ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Cost Effective ◽  
Dye Wastewater ◽  
Rate Of Reaction

The newly developed advanced oxidation process is eco-friendly and cost-effective. The rate of reaction is independent of temperature, dye, oxidant, and catalytic and additive concentrations. Mineralization of dye is achieved in 60 minutes.

Sign in / Sign up

Export Citation Format

Share Document