scholarly journals Heterogeneous catalytic ozonation of ciprofloxacin in aqueous solution using a manganese-modified silicate ore

RSC Advances ◽  
2018 ◽  
Vol 8 (58) ◽  
pp. 33534-33541 ◽  
Author(s):  
Lisha Luo ◽  
Donglei Zou ◽  
Dongwei Lu ◽  
Bingjing Xin ◽  
Ming Zhou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Oxidation ◽  
Catalytic Ozonation ◽  
Oxidation Activity ◽  
Heterogeneous Catalytic

Manganese-modified silicate ore showed remarkable catalytic oxidation activity for ciprofloxacin degradation and the corresponding mechanism was revealed.

Heterogeneous catalytic ozonation of 2, 4-dinitrophenol in aqueous solution by magnetic carbonaceous nanocomposite: catalytic activity and mechanism

2015 ◽  
Vol 57 (43) ◽  
pp. 20447-20456 ◽  
Author(s):  
Yousef Dadban Shahamat ◽  
Mahdi Sadeghi ◽  
Ali Shahryari ◽  
Niloofar Okhovat ◽  
Farshad Bahrami Asl ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Catalytic Ozonation ◽  
Heterogeneous Catalytic

The reaction mechanism of catalytic oxidation with hydrogen peroxide and ozone in aqueous solution

2003 ◽  
Vol 47 (1) ◽  
pp. 179-184 ◽  
Author(s):  
J.S. Park ◽  
H. Choi ◽  
K.H. Ahn
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Reaction Mechanism ◽  
Catalytic Oxidation ◽  
Catalytic Ozonation ◽  
Sorption Behavior ◽  
Model Compounds ◽  
Reaction Characteristics ◽  
Hydrophobic Portion ◽  
Bicarbonate Addition

The sorption and catalytic oxidation of model compounds (pCBA and phenanthrene) and NOM on FeOOH were investigated using hydrogen peroxide and ozone, respectively. After oxidation with ozone, the hydrophobic, transphilic, and hydrophilic NOM fractions were isolated using XAD-8 and -4 resins to analyze the reaction characteristics. The sorption of pCBA was strongly dependent upon the pH, but phenanthrene exhibited a sorption behavior that was independent of the pH. In the case of NOM, the hydrophobic portion showed higher sorption affinity than hydrophilic and transphilic at pH 7.2. The concentrations of model compounds and oxidants were measured during the oxidations and the efficiency was compared for tests done with ozone alone and those using catalytic ozonation. Through the comparison of the sorption and decomposition of the model compounds, along with the effects of bicarbonate addition, mechanisms for catalytic oxidation with hydrogen peroxide or ozone were proposed, respectively.

Sign in / Sign up

Export Citation Format

Share Document