Photooxidation Degradation of Reactive Brilliant Red K-2BP in Aqueous Solution by Ultraviolet Radiation/Sodium Hypochlorite

2009 ◽  
Vol 37 (7) ◽  
pp. 574-580 ◽  
Author(s):  
Qing-Fu Zeng ◽  
Jie Fu ◽  
Yang Zhou ◽  
Yin-Tao Shi ◽  
Hai-Liang Zhu
Keyword(s):  
Aqueous Solution ◽  
Ultraviolet Radiation ◽  
Sodium Hypochlorite

Prometryne Oxidation by Sodium Hypochlorite in Aqueous Solution: Kinetics and Mechanism

1995 ◽  
Vol 29 (12) ◽  
pp. 2987-2991 ◽  
Author(s):  
G. Mascolo ◽  
A. Lopez ◽  
R. Foldenyi ◽  
R. Passino ◽  
G. Tiravanti
Keyword(s):  
Aqueous Solution ◽  
Sodium Hypochlorite ◽  
Kinetics And Mechanism ◽  
Solution Kinetics

Degradation of C.I. Disperse Blue 56 by Ultraviolet Radiation/Sodium Hypochlorite

2009 ◽  
Vol 31 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Qing-Fu Zeng ◽  
Jie Fu ◽  
Yin-Tao Shi ◽  
Hai-Liang Zhu
Keyword(s):  
Ultraviolet Radiation ◽  
Sodium Hypochlorite

scholarly journals Application of ozone ultrafine bubble water for cleaning and sterilizing the dialysis circuit

2018 ◽  
Vol 192 ◽  
pp. 03034
Author(s):  
Yukiko Nakahara ◽  
Kazutoku Miyazaki ◽  
Junji Nakao ◽  
Shijie Zhu
Keyword(s):  
Aqueous Solution ◽  
Sodium Hypochlorite ◽  
Ozone Concentration ◽  
Bactericidal Effect ◽  
Water Influence

The dialysis circuit was washed by the ultrafine bubble (UFB) water and ozone UFB water and sodium hypochlorite aqueous solution. The effect of washing time, ozone concentration of UFB water, influence of UFB water on artificial dialysis equipment, etc. were investigated. The cleaning and sterilizing effect of ozone UFB water passed through the filter for artificial dialysis was verified. It was confirmed that there were no colony bacteria in the circuit which was washed by the ozone UFB water for 1 hour. Ozone UFB water has the same bactericidal effect as sodium hypochlorite. As an alternative of sodium hypochlorite, we are expecting its application to the cleaning and sterilization of ozone UFB water for dialysis circuit.

Degradation of herbicides (ametryn and isoproturon) during water disinfection by means of two oxidants (hypochlorite and chlorine dioxide)

1997 ◽  
Vol 35 (4) ◽  
pp. 129-136 ◽  
Author(s):  
A. Lopez ◽  
G. Mascolo ◽  
G. Tiravanti ◽  
R. Passino
Keyword(s):  
Aqueous Solution ◽  
Reaction Time ◽  
Sodium Hypochlorite ◽  
Chlorine Dioxide ◽  
Hydrolysis Product ◽  
Water Disinfection ◽  
Experimental Conditions ◽  
Molar Ratios ◽  
Chemical Structures ◽  
Opposite Trend

The paper reports the results of an investigation aimed to find out the number and the chemical structures of byproducts which form during the reactions occurring in aqueous solution between two very common disinfectants, sodium hypochlorite (NaClO) and chlorine dioxide (ClO2), and two herbicides widely used in agriculture and frequently found in groundwaters: ametryn and isoproturon. Under controlled experimental conditions [T=20°C, pH=7, reaction-time = 48h, herbicide/disinfectant molar ratios: 0.05 and 0.05×10−2], ametryn reactions with chlorine dioxide much slower than with sodium hypochlorite, whereas the opposite trend has been observed for isoproturon. In any case, however, the higher the reagents concentration the faster the reactions. As for reaction byproducts, they have been detected by HPLC and identified by HPLC-MS. In particular, ametryn (R-S-CH3) reaction with NaClO gives rise to the consecutive formation of four derivatives: the sulphoxide (R-SO-CH3), the sulphone (R-SO2-CH3), the sulphonate ester (R-O-SO2-CH3) and its hydrolysis product (R-OH). Within the fixed reaction time (48h), ametryn reaction with ClO2 forms only the sulphoxide derivative (R-SO-CH3). As for isoproturon, it reacts with both oxidants forming aromatic-ring substituted derivatives. In particular, during the reactions with NaClO and ClO2, four and two (chlorinated and/or hydroxylated) derivatives are respectively formed.

scholarly journals Study on Decoloring of Indigo by Sodium Hypochlorite Aqueous Solution

2018 ◽  
Vol 91 (7) ◽  
pp. 215-219
Author(s):  
Hitoshi IWABUKI ◽  
Yuko MATSUMOTO ◽  
Hiromi URANO
Keyword(s):  
Aqueous Solution ◽  
Sodium Hypochlorite

Mass transfer aspect of ozone absorption and decomposition in aqueous solution with ultraviolet radiation

1996 ◽  
Vol 57 (1-4) ◽  
pp. 37-52 ◽  
Author(s):  
C. Y. Chang ◽  
C. Y. Chiu ◽  
S. J. Lee ◽  
W. H. Huang ◽  
Y. H. Yu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Mass Transfer ◽  
Ultraviolet Radiation ◽  
Ozone Absorption

Photodegradation of herbicides with different chemical natures in aqueous solution by ultraviolet radiation. Effects of operational variables and solution chemistry

2014 ◽  
Vol 255 ◽  
pp. 307-315 ◽  
Author(s):  
Francisco Orellana-García ◽  
Miguel A. Álvarez ◽  
Victoria López-Ramón ◽  
José Rivera-Utrilla ◽  
Manuel Sánchez-Polo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ultraviolet Radiation ◽  
Radiation Effects ◽  
Solution Chemistry ◽  
Operational Variables
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