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 ◽  
...  
2007 ◽  
Vol 52 (3) ◽  
pp. 863-865
Author(s):  
Hong-Kun Zhao ◽  
Dao-Sen Zhang ◽  
Cao Tang ◽  
Rong-Rong Li ◽  
Ming-Li Su ◽  
...  

2007 ◽  
Vol 52 (1) ◽  
pp. 44-46
Author(s):  
Hong-Kun Zhao ◽  
Dao-Sen Zhang ◽  
Cao Tang ◽  
Rong-Rong Li ◽  
Wen-Lin Xu ◽  
...  

Proceedings ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 44
Author(s):  
Kozak ◽  
Włodarczyk-Makuła

The aim of the research was to determine the effectiveness of removing micro-organic pollutants, including PAHs, using the modified Fenton method. The tested material was pretreated coke wastewater, in which the initial chemical oxygen demand (COD) value and initial polycyclic aromatic hydrocarbons (PAHs) concentration were determined. The samples were then subjected to an oxidation procedure. Before the process, the pH was adjusted to 3.5–3.8. Next, the following doses of sodium carbonate—hydrogen peroxide (2/3): 1.2 g/L, 1.5 g/L and 2 g/L, and a constant dose of iron sulphate were added. The next step was exposing the samples to UV light for 6 min and separating the organic matrix from the samples of wastewater. After the tests, the final value of the COD and the final PAHs concentration were determined. The average content of organic pollutants in pretreated coke wastewater determined by the COD index was 538 mg/L, and after the oxidation process, the COD index decreased in the range from 9 to 29%. The efficiency of the degradation of the sum of 16 PAHs was varied and was in the range of 94–97.6%. The research results show that sodium carbonate—hydrogen peroxide (2/3) can be used for the degradation of organic pollutants, such as PAHs, in the modified Fenton process.


1995 ◽  
Vol 172 (2) ◽  
pp. 494-501 ◽  
Author(s):  
Gemma Montalvo ◽  
Mercedes Valiente ◽  
Elvira Rodenas

Author(s):  
B. N. Mehrotra

AbstractThe phase diagram of the binary system sodium chromate-sodium carbonate has been studied using X-ray and thermal methods. The system shows a large miscibility gap at low as well as at high temperatures. The sodium carbonate rich part yields zone information. Sodium chromate rich crystals show dendritic and radial growth. The hexagonal high-temperature phase of mixed crystals with composition 85 × Na


1987 ◽  
Vol 91 (15) ◽  
pp. 4092-4105 ◽  
Author(s):  
Neville. Boden ◽  
Simon A. Corne ◽  
Kenneth W. Jolley

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