Catalytic wet air oxidation of high-concentration organic pollutants by upflow packed-bed reactor using a Ru–Ce catalyst derived from a Ru3(CO)12 precursor

RSC Advances ◽  
2016 ◽  
Vol 6 (27) ◽  
pp. 22633-22638 ◽  
Author(s):  
Chaoying Yu ◽  
Xu Meng ◽  
Gexin Chen ◽  
Peiqing Zhao
Keyword(s):  
High Activity ◽  
Organic Pollutants ◽  
Strong Interaction ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
High Concentration

The low loading Ru–Ce catalyst have high activity in CWAO due to a strong interaction with the support.

A molybdovanadophosphate-based surfactant encapsulated heteropolyanion with multi-lamellar nano-structure for catalytic wet air oxidation of organic pollutants under ambient conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94743-94751 ◽  
Author(s):  
Shun Kuang Lua ◽  
Wen-Da Oh ◽  
Li-Zhi Zhang ◽  
Lei Yao ◽  
Teik-Thye Lim ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Catalytic Wet Air Oxidation ◽  
Ambient Conditions ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Nano Structure

Molybdovanadophosphate-based surfactant encapsulated heteropolyanion with multi-lamellar nano-structure for ambient catalytic wet air oxidation of BPA.

Electro-assisted catalytic wet air oxidation of organic pollutants on a MnO@C/GF anode under room condition

2019 ◽  
Vol 256 ◽  
pp. 117822 ◽  
Author(s):  
Lin-Feng Zhai ◽  
Ming-Feng Duan ◽  
Meng-Xia Qiao ◽  
Min Sun ◽  
Shaobin Wang
Keyword(s):  
Organic Pollutants ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Room Condition

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

2005 ◽  
Vol 33 (1-4) ◽  
pp. 3-50 ◽  
Author(s):  
F. Stüber ◽  
J. Font ◽  
A. Fortuny ◽  
C. Bengoa ◽  
A. Eftaxias ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Carbon Materials ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation

Influence of Ru precursors on the activity of Ru/Al2O3–TiO2 catalysts for catalytic wet air oxidation of high concentration organic compounds

RSC Advances ◽  
2016 ◽  
Vol 6 (77) ◽  
pp. 73810-73816 ◽  
Author(s):  
Fagui Lu ◽  
Chaoying Yu ◽  
Xu Meng ◽  
Jinqi Zhang ◽  
Gexin Chen ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
High Concentration ◽  
Ru Catalysts

The nature of the Ru precursors affected the performance of Ru catalysts with those prepared from chloride-free Ru precursors being more active than those prepared from chlorine-containing Ru precursors.

Catalyst Activity on Landfill Leachate Treatment with CWAO Method

2013 ◽  
Vol 467 ◽  
pp. 127-132
Author(s):  
Qing Yu Wan ◽  
Yong Li Zhang ◽  
Jin Bing Lin
Keyword(s):  
Reaction Time ◽  
Landfill Leachate ◽  
Organic Pollutant ◽  
Catalyst Activity ◽  
Treated Wastewater ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
High Concentration ◽  
Leachate Treatment

The landfill leachate belongs to typical high concentration and organic pollutant wastewater. In this study, Landfill leachate was treated with Catalytic Wet Air Oxidation (CWAO) method. The monitoring indicators consist of CODCr, absorbance, pH and chroma. The results show that the activity of the catalysts arrange from high to low: Co (NO3)2, Cu (NO3)2, Fe (NO3)3, CuSO4, Fe2(SO4)3, Mn (NO3)2, FeSO4, Zn (NO3)2, Bi (NO3)3, Zr (NO3)2, Ni (NO3)2; For the same kind of metal, the catalytic activity of nitrates is higher than that of sulfates; Relative to the distribution of catalyst, the activity of Co (NO3)2 is the strongest. With the optimized catalyst Co (NO3)2 , the landfill leachate has been treated. With the extension of reaction time, the effluent CODCr, absorbance and chroma reduced, but the wastewater biodegradability indicator B/C improved. At the reaction time of 90 min, the CODCr of landfill leachate reduced to 7176 mg/L, and the absorbance and the chroma reduced to 9.1 and 1600 times, respectively. The above results show that the activity of catalyst Co (NO3)2 is high, and the biochemical indicators B/C of wastewater is higher than the critical value of 0.3. Therefore, the treated wastewater shows the good biodegradability, and the chosen catalyst of Co (NO3)2 presents the high activity.

Noble Metal Free Catalyst with High Activity and Stability for Catalytic Wet Air Oxidation of N, N-dimethylformamide

2021 ◽  
pp. 118172
Author(s):  
Sajid Ali ◽  
Wenting Xiong ◽  
Zefeng Liao ◽  
Muhammad Junaid Aslam ◽  
Chenhong Zhou ◽  
...  
Keyword(s):  
High Activity ◽  
Noble Metal ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Metal Free

Influence Factors of Landfill Leachate Treatment with CWAO Method

2013 ◽  
Vol 849 ◽  
pp. 127-131
Author(s):  
Qing Yu Wang ◽  
Wei Li Chen ◽  
Jin Bing Lin
Keyword(s):  
Reaction Time ◽  
Landfill Leachate ◽  
Removal Rate ◽  
Operating Conditions ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
High Concentration ◽  
Leachate Treatment ◽  
Decolorization Rate

Landfill Leachate is a kind of organic wastewater with high concentration and non-biochemical character, and Catalytic Wet Air Oxidation (CWAO) is suitable for this kind of wastewater treatment. In this study, Landfill leachate was treated with Catalytic Wet Air Oxidation (CWAO) method. The monitoring indicators consist of CODCr, absorbance, pH and chroma. The results show that: CODCr removal rate and decolorization rate of landfill leachate reduce with the reduction of the influent pH, the increment of water concentration and the extension of the reaction time; Under the optimized operating conditions: the influent pH of 8.10, the influent CODCr of 16611 mg/L, the reaction time of 90 min, the CODCr removal rate and decolorization rate of landfill leachate reach 56.8% and 83.7%, respectively. The effluent pH is 8.33 and chroma is 1600 times.

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