Potassium persulfate promoted catalytic wet oxidation of fulvic acid as a model organic compound in landfill leachate with activated carbon

2012 ◽  
Vol 200-202 ◽  
pp. 25-31 ◽  
Author(s):  
Xi-Yan Xu ◽  
Guang-Ming Zeng ◽  
Yan-Rong Peng ◽  
Zhuo Zeng
Keyword(s):  
Activated Carbon ◽  
Organic Compound ◽  
Fulvic Acid ◽  
Landfill Leachate ◽  
Potassium Persulfate ◽  
Wet Oxidation ◽  
Catalytic Wet Oxidation

Catalytic Wet Oxidating Fulvic Acid By Zero-Valent Copper Chitosan Activated Carbon Ball: Plackett-Buiman Design and Response Surface Modeling Optimization

2021 ◽  
Author(s):  
Chaofei Song ◽  
Yue Lv ◽  
Xia Qin ◽  
Jiaxin Cui ◽  
Chengrui Guo ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Fulvic Acid ◽  
Response Surface ◽  
Removal Rate ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Catalytic Wet Oxidation ◽  
Experimental Conditions ◽  
Statistical Tool ◽  
Average Maximum

Abstract In this paper, the active component zero-valent copper (ZVC) supported by chitosan activated carbon ball (CTS-ACB) (i.e. ZVC/CTS-ACS catalyst) was successfully prepared. The characterization results showed obvious characteristics of activated carbon and zero-valent copper. The catalyst was used to degrade fulvic acid (FA) in catalytic wet oxidation(CWO) system. The two significant factors acidity and temperature were found with the statistical tool Plackett-Buimanhe(PB) in CWO for FA removal. Then the response surface methodology(RSM) model was used to optimize the experimental conditions in order to obtain the optimal FA removal rate. With the optimal experimental parameters, that is, a temperature of 94°C and an acidity of 3.8, the average maximum removal rate of FA was 93.02%, which was in agreement with the expected result of the model 93.86%, indicating that the model is well established. The comparison of catalytic performance showed that the addition of catalyst ZVC / CTS-ACS could increase the removal rate of FA, colour number(CN) and TOC by 93.6%, 83.5% and 81.9% respectively. The utilization of ZVC can greatly increase the mineralization rate of FA , which indicates the high catalytic activity and minerazation of the catalyst.

scholarly journals Performance assessment of activated carbon supported catalyst during catalytic wet oxidation of simulated pulping effluents generated from wood and bagasse based pulp and paper mills

RSC Advances ◽  
2017 ◽  
Vol 7 (16) ◽  
pp. 9754-9763 ◽  
Author(s):  
Bholu Ram Yadav ◽  
Anurag Garg
Keyword(s):  
Activated Carbon ◽  
Performance Assessment ◽  
Supported Catalyst ◽  
Oxygen Demand ◽  
Pulp And Paper ◽  
Small Scale ◽  
Wet Oxidation ◽  
Catalytic Wet Oxidation ◽  
Pulp And Paper Mills ◽  
Paper Mills

The present study reports the performance of catalytic wet oxidation (CWO) for the treatment of simulated pulping effluents (with chemical oxygen demand (COD) = 15 000 and 17 000 mg L−1) from large and small scale pulp and paper mills, respectively.

Supercritical Water Oxidation of Fulvic Acid as a Model Organic Compound in Landfill Leachate

2014 ◽  
Vol 522-524 ◽  
pp. 600-604 ◽  
Author(s):  
Yan Meng Gong ◽  
Shu Zhong Wang ◽  
Li Li Qian ◽  
Yan Hui Li
Keyword(s):  
Organic Compound ◽  
Fulvic Acid ◽  
Supercritical Water ◽  
Landfill Leachate ◽  
Water Oxidation ◽  
Batch Reactor ◽  
Total Carbon ◽  
Supercritical Water Oxidation ◽  
Toc Removal ◽  
Oxidation Ratio

Fulvic acid (FA) is a common refractory organic compound in landfill leachate. The degradation of FA in supercritical water oxidation (SCWO) was conducted in a SS 316 batch reactor. The effects of temperature, pressure, residence time, oxidation ratio and initial FA concentration on the degradation of FA were investigated. Results showed that FA could be easily destructed in SCWO process, and a total organic carbon (TOC) removal efficiency of 98.0% was available at 600 °C, 420 s, 25 MPa and 1% FA. Oxidation coefficient had a significant positive effect on the degradation of FA. Total carbon (TC) and TOC removal efficiencies increased from 78.9 % to 97.2 % and from 86.4 % to 97.2, respectively, when oxidation coefficient increased from 0 to 4. Benzene, phenol and naphthalene could be regarded as the intermediate products in SCWO.

Generalized Kinetic Model for the Catalytic Wet Oxidation of Phenol Using Activated Carbon as the Catalyst

2005 ◽  
Vol 44 (11) ◽  
pp. 3869-3878 ◽  
Author(s):  
Aurora Santos ◽  
Pedro Yustos ◽  
Sara Gomis ◽  
Gema Ruiz ◽  
Felix Garcia-Ochoa
Keyword(s):  
Activated Carbon ◽  
Kinetic Model ◽  
Wet Oxidation ◽  
Catalytic Wet Oxidation ◽  
Oxidation Of Phenol ◽  
Generalized Kinetic Model

2,4,6-Trichlorophenol-promoted catalytic wet oxidation of humic substances and stabilized landfill leachate

2014 ◽  
Vol 247 ◽  
pp. 216-222 ◽  
Author(s):  
Peng Wang ◽  
Guangming Zeng ◽  
Yanrong Peng ◽  
Fen Liu ◽  
Chang Zhang ◽  
...  
Keyword(s):  
Humic Substances ◽  
Landfill Leachate ◽  
Wet Oxidation ◽  
Catalytic Wet Oxidation

scholarly journals Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chaofei Song ◽  
Yue Lv ◽  
Xia Qin ◽  
Chengrui Guo ◽  
Jiaxin Cui ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Fulvic Acid ◽  
Removal Rate ◽  
Influence Factors ◽  
Copper Ion ◽  
Correlation Coefficients ◽  
Processing Parameters ◽  
Catalytic Performance ◽  
Catalytic Wet Oxidation ◽  
Toc Removal

AbstractThe degradation efficiency of fulvic acid (FA) was investigated in the catalytic wet oxidation process (CWPO) by zero-valent copper chitosan activated carbon ball (ZVC/CTS-ACB). Characterization of ZVC/CTS-ACB shows that zero-valent copper was loaded successfully on the chitosan activated carbon. Plackett–Buiman (PB) design and response surface methodology (RSM) were employed to determine the influence factors and the optimum processing parameters. The model was well fitted to the actual data and the correlation coefficients of R2 and R2-adj were 0.9359 and 0.9039, respectively. Under the obtained optimum conditions for FA degradation: temperature = 94 °C and pH 3.8, the average FA removal by three replicate experiments was 93.02%, which has a high consistency to the RSM optimal target response of 93.86%. The comparison of catalytic performance showed that the addition of catalyst ZVC/CTS-ACS could increase the removal rate of FA, color number (CN) and TOC by 93.6%, 83.5% and 81.9% respectively. The high TOC removal rate indicated the good performance of the catalyst to FA mineralization. Additionally, the ICP analysis of copper ion leaching was only 0.08 mg/l after 5 repeated recycles of the catalyst, demonstrating the high stability of ZVC/CTS-ACB that is beneficial for the actual application.

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