scholarly journals Naphthalene mineralization by supercritical water oxidation and determination of by-products using Non-target analysis

2021 ◽  
Author(s):  
H. Ates ◽  
M. E. Argun ◽  
N. Kurt
Keyword(s):  
Supercritical Water ◽  
Water Oxidation ◽  
Oxidation Process ◽  
Operating Conditions ◽  
Supercritical Water Oxidation ◽  
Experimental Conditions ◽  
Design Program ◽  
Derivatives Of ◽  
By Products

Abstract In this study, the fate of naphthalene was investigated with a supercritical water oxidation process (SCWO). Also, the effectiveness of different operating conditions including pressure, temperature, residence time and oxidant dose on the formation of by-products were determined. The experimental sets were determined by the experimental design program and the effect of the selected variables on the removal of the naphthalene was associated statistically. According to obtained results, naphthalene by SCWO process was mineralized up to 98.5%. Removal efficiencies in sub- and supercritical conditions were determined as between 94 and 100%. Derivatives of aldehyde, propanoic acid, benzene acetic acid and benzofuran were detected as by-products at many experimental conditions and also, some intermediates with a molecular weight higher than naphthalene were determined.

Treatment of hospital wastewater by supercritical water oxidation process

2020 ◽  
Vol 185 ◽  
pp. 116279 ◽  
Author(s):  
Selin Top ◽  
Mesut Akgün ◽  
Ekin Kıpçak ◽  
Mehmet Sinan Bilgili
Keyword(s):  
Supercritical Water ◽  
Water Oxidation ◽  
Oxidation Process ◽  
Supercritical Water Oxidation ◽  
Hospital Wastewater

Parameter Optimization of Municipal Sludge Treated by Supercritical Water Oxidation Process

2014 ◽  
Vol 1010-1012 ◽  
pp. 693-698
Author(s):  
Mei Gao ◽  
Shu Zhong Wang ◽  
Hong Ma
Keyword(s):  
Total Nitrogen ◽  
Residence Time ◽  
Reaction Temperature ◽  
Supercritical Water ◽  
Water Oxidation ◽  
Oxidation Process ◽  
Removal Rate ◽  
Supercritical Water Oxidation ◽  
Municipal Sludge ◽  
Optimum Reaction

Supercritical water oxidation process can effectively degrade the total nitrogen in municipal sludge. In order to obtain the optimum parameters of municipal sludge treated by supercritical water oxidation, this article selected the total nitrogen removal rate as the evaluation value, and used response surface methodology to optimize the parameters of sludge treatment by supercritical water oxidation, the parameters including temperature, pressure, residence time and oxidation coefficient. The results show that the reaction temperature, pressure and residence time exist interaction, and the influence degree of parameters is: pressure > reaction temperature > reaction retention time; The optimum reaction conditions are as follows: reaction temperature 539 °C, pressure 27 MPa, residence time 434 s, and oxidation coefficient 2.16, under these conditions, the total nitrogen decreasing efficiency can reach 74.12%.

New feed system for water-insoluble organic and/or highly concentrated wastewaters in the supercritical water oxidation process

2012 ◽  
Vol 72 ◽  
pp. 263-269 ◽  
Author(s):  
V. Vadillo ◽  
M.B. García-Jarana ◽  
J. Sánchez-Oneto ◽  
J.R. Portela ◽  
E.J. Martínez de la Ossa
Keyword(s):  
Supercritical Water ◽  
Water Oxidation ◽  
Oxidation Process ◽  
Supercritical Water Oxidation ◽  
Feed System
Sign in / Sign up

Export Citation Format

Share Document