Degradation of organic pollutants by Vacuum-Ultraviolet (VUV): Kinetic model and efficiency

2018 ◽  
Vol 133 ◽  
pp. 69-78 ◽  
Author(s):  
Pengchao Xie ◽  
Siyang Yue ◽  
Jiaqi Ding ◽  
Ying Wan ◽  
Xuchun Li ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Organic Pollutants ◽  
Vacuum Ultraviolet

Simultaneous photochemical generation of ozone in the gas phase and photolysis of aqueous reaction systems using one VUV light source

1997 ◽  
Vol 35 (4) ◽  
pp. 41-48 ◽  
Author(s):  
T.M. Hashem ◽  
M. Zirlewagen ◽  
A. M. Braun
Keyword(s):  
Gas Phase ◽  
Light Source ◽  
Organic Pollutants ◽  
Vacuum Ultraviolet ◽  
Oxidative Degradation ◽  
Reaction System ◽  
Photochemical Reactions ◽  
Experimental Conditions ◽  
Photochemical Generation ◽  
Kinetics Of

A more efficient use of vacuum ultraviolet (VUV) radiation produced by an immersed Xe-excimer light source (172 nm) was investigated for the oxidative degradation of organic pollutants in aqueous systems. All emitted VUV radiation from one light source was used in two simultaneous but separate photochemical reactions: (1) photochemical generation of ozone by irradiating oxygen in the gas phase and (2) photolysis of the aqueous reaction system. The gas stream containing the generated ozone is sparged into the reaction system, thus enhancing the oxidative degradation of organic pollutants. The photochemically generated ozone in the gas phase was quantitatively analyzed, and the kinetics of the degradation of 4-chlorophenol (4-CP) and of the dissolved organic carbon (DOC) were determined under different experimental conditions. The results show that the rates of degradation of the substrate and of the DOC decrease in the order of the applied processes, VUV/O3 > O3 > VUV.

Removal of Organic Pollutants in Solution by Bamboo Charcoal

2013 ◽  
Vol 699 ◽  
pp. 554-556 ◽  
Author(s):  
Zi Lin Meng ◽  
Yi He Zhang ◽  
Qi An ◽  
Feng Zhu Lv ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Kinetic Model ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Organic Pollutants ◽  
Organic Contaminants ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Bamboo Charcoal ◽  
Key Factors

Bamboo charcoal (BC) as an environmentally friendly and low-cost material receives widespread attention. Recently, much attention has been focused on the use of BC as adsorbent to treat wastewater. This paper provides an overview of the adsorption of organic contaminants in solution by using BC. The sorption behaviors of BC with various organic pollutants, and the kinetic model adopted to explain the adsorption rate of organic pollutants from aqueous solution were also reviewed. The adsorption capacity, the isotherm model, and several key factors such as modification, surface area, are discussed in this paper. Possible improvement of BC to treat organic contaminants in aqueous solution is also proposed.

Improved fractal kinetic model to predict mechanochemical destruction rate of organic pollutants

Chemosphere ◽  
2021 ◽  
pp. 131307
Author(s):  
Mohammadtaghi Vakili ◽  
Ruobing Qin ◽  
Giovanni Cagnetta ◽  
Jun Huang ◽  
Bin Wang ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Organic Pollutants ◽  
Destruction Rate

Mineralization lumping kinetic model for abatement of organic pollutants using Fenton's reagent

2010 ◽  
Vol 151 (1-2) ◽  
pp. 89-93 ◽  
Author(s):  
A. Santos ◽  
P. Yustos ◽  
S. Rodríguez ◽  
A. Romero
Keyword(s):  
Kinetic Model ◽  
Organic Pollutants ◽  
Fenton’S Reagent ◽  
Fenton's Reagent

A comprehensive kinetic model for mechanochemical destruction of persistent organic pollutants

2016 ◽  
Vol 291 ◽  
pp. 30-38 ◽  
Author(s):  
Giovanni Cagnetta ◽  
Jun Huang ◽  
Bin Wang ◽  
Shubo Deng ◽  
Gang Yu
Keyword(s):  
Kinetic Model ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants

Oscillator Strength Measurements in the Vacuum-Ultraviolet by the Emission Method

1988 ◽  
Vol 102 ◽  
pp. 353-356
Author(s):  
C. Goldbach ◽  
G. Nollez
Keyword(s):  
Oscillator Strength ◽  
Vacuum Ultraviolet ◽  
Oscillator Strengths ◽  
Emission Method ◽  
Absolute Scale ◽  
Good Agreement

AbstractThe principles and the realization of an experiment devoted to oscillator strength measurements in the vacuum-ultraviolet by the emission method are briefly presented. The results obtained for the strong multiplets of neutral nitrogen and carbon in the 1200-2000 Å range yield an absolute scale of oscillator strengths in good agreement with the most recent calculations.

VACUUM ULTRAVIOLET RADIOMETRY

1978 ◽  
Vol 39 (C4) ◽  
pp. C4-227-C4-232 ◽  
Author(s):  
JAMES A. R. SAMSON
Keyword(s):  
Vacuum Ultraviolet
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