Thermodynamics of the hydrogen peroxide-water system

1985 ◽  
Vol 19 (3) ◽  
pp. 255-258 ◽  
Author(s):  
Hoon. Hwang ◽  
Purnendu K. Dasgupta
Keyword(s):  
Hydrogen Peroxide ◽  
Water System

Solubility and Phase Diagram for the Ternary Sodium Oxalate + Hydrogen Peroxide + Water System at (283.15 and 293.15) K

2007 ◽  
Vol 52 (3) ◽  
pp. 863-865
Author(s):  
Hong-Kun Zhao ◽  
Dao-Sen Zhang ◽  
Cao Tang ◽  
Rong-Rong Li ◽  
Ming-Li Su ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Hydrogen Peroxide ◽  
Water System ◽  
Sodium Oxalate

Combining UASB technology and advanced oxidation processes (AOPs) to treat food processing wastewaters

2002 ◽  
Vol 45 (10) ◽  
pp. 329-334 ◽  
Author(s):  
G.O. Sigge ◽  
T.J. Britz ◽  
P.C. Fourie ◽  
C.A. Barnardt ◽  
R. Strydom
Keyword(s):  
Hydrogen Peroxide ◽  
Food Processing ◽  
Advanced Oxidation Processes ◽  
Water System ◽  
Post Treatment ◽  
Significant Progress ◽  
Oxidation Processes ◽  
Legal Limit ◽  
Direct Discharge ◽  
Made In

UASB treatment of fruit cannery and winery effluents was shown to be feasible. However, the treated effluents still have residual COD levels well above the legal limit of 75 mg.L−1 for direct discharge to a water system and a form of post-treatment is necessary to reduce the COD further. Ozone and ozone/hydrogen peroxide were used in combination with a granular activated carbon contacting column to assess the effectiveness as a post-treatment option for the UASB treated fruit cannery and winery effluent. Colour reduction in the effluents ranged from 66 to 90% and COD reductions of 27–55% were achieved. The combination of ozone and hydrogen peroxide gave better results than ozonation alone. Significant progress was thus made in achieving the legal limit of 75 mg.L−1.

Solubility and Phase Diagram of the Quaternary Sodium Carbonate + Ethanol + Hydrogen Peroxide + Water System atT= 293.15 K

2007 ◽  
Vol 52 (4) ◽  
pp. 1213-1216
Author(s):  
Hong-kun Zhao ◽  
Rong-rong Li ◽  
Ming-li Su ◽  
Cao Tang ◽  
Dao-sen Zhang ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Hydrogen Peroxide ◽  
Sodium Carbonate ◽  
Water System

Use of ozone and hydrogen peroxide in the post-treatment of UASB treated alkaline fruit cannery effluent

2001 ◽  
Vol 44 (5) ◽  
pp. 69-74 ◽  
Author(s):  
G.O. Sigge ◽  
T.J. Britz ◽  
P.C. Fourie ◽  
C.A. Barnardt ◽  
R. Strydom
Keyword(s):  
Hydrogen Peroxide ◽  
Activated Carbon ◽  
Treatment Options ◽  
Water System ◽  
Granular Activated Carbon ◽  
Post Treatment ◽  
Legal Limit ◽  
Treated Effluent ◽  
Direct Discharge

UASB treatment of cannery effluents was shown to be feasible. However, the treated effluent still does not allow direct discharge to a water system and a further form of post-treatment is necessary to reduce the COD to lower than the legal limit of 75 mg/l. The use of ozone, hydrogen peroxide and granular activated carbon were used singly or in combination to assess the effectiveness as post-treatment options for the UASB treated alkaline fruit cannery effluent. Colour reduction in the effluent ranged from 15% to 92% and COD reductions of 26-91% were achieved. Combinations of ozone and hydrogen peroxide gave better results than either oxidant singly. The best results were achieved by combining ozone, hydrogen peroxide and granular activated carbon, and COD levels were reduced to levels sufficiently below the 75 mg/l limit.

(Solid + Liquid) Phase Diagram for the Ternary Potassium Oxalate + Hydrogen Peroxide + Water System at 283.15 K and 293.15 K

2007 ◽  
Vol 52 (1) ◽  
pp. 44-46
Author(s):  
Hong-Kun Zhao ◽  
Dao-Sen Zhang ◽  
Cao Tang ◽  
Rong-Rong Li ◽  
Wen-Lin Xu ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Hydrogen Peroxide ◽  
Liquid Phase ◽  
Water System ◽  
Potassium Oxalate ◽  
Solid Liquid

scholarly journals Liquid-liquid equilibrium constant for acetic acid in an olive oil-epoxidized olive oil-acetic acid-hydrogen peroxide-water system

2016 ◽  
Vol 70 (2) ◽  
pp. 165-175 ◽  
Author(s):  
Milovan Jankovic ◽  
Olga Govedarica ◽  
Snezana Sinadinovic-Fiser ◽  
Jelena Pavlicevic ◽  
Vesna Teofilovic ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Olive Oil ◽  
Equilibrium Constant ◽  
Water System ◽  
Liquid Equilibrium ◽  
Nrtl Model ◽  
In Situ Epoxidation ◽  
Flash Calculation ◽  
Activity Coefficient Models

The liquid-liquid equilibrium constant for acetic acid in a quinary system olive oil-epoxidized olive oil-acetic acid-hydrogen peroxide-water was experimentally determined for temperatures and component ratios relevant for in situ epoxidation of plant oils. The values has the constant range from 1.52 to 2.73. To predict the equilibrium constant for acetic acid, the experimental data were correlated with UNIQUAC (universal quasi chemical) and NRTL (non-random two liquid) activity coefficient models. For simplified calculation of the phase equilibrium the insolubility of olive oil and epoxidized olive oil in the water, as well as insolubility of water and hydrogen peroxide in the olive oil and epoxidized olive oil, was assumed. The root mean square deviation (RMSD) of the experimental and calculated values of the liquid-liquid equilibrium constant for acetic acid is 0.1910 for the UNIQUAC model and 0.1815 for the NRTL model. For rigorous flash calculation, when the partitioning of all components between the phases was assumed, the RMSD for the NRTL model is 0.1749.

Sign in / Sign up

Export Citation Format

Share Document