Photocatalytic degradation of VOCs on various commercial titanium dioxides: Impact of operating parameters on removal efficiency and by-products generation

2018 ◽  
Vol 138 ◽  
pp. 275-282 ◽  
Author(s):  
Alireza Haghighat Mamaghani ◽  
Fariborz Haghighat ◽  
Chang-Seo Lee
Keyword(s):  
Photocatalytic Degradation ◽  
Removal Efficiency ◽  
Operating Parameters ◽  
Commercial Titanium ◽  
Titanium Dioxides ◽  
By Products

Photocatalytic degradation of chlorophenols using star block copolymers: Removal efficiency, by-products and toxicity of catalyst

2013 ◽  
Vol 215-216 ◽  
pp. 921-928 ◽  
Author(s):  
Seung-Gun Chung ◽  
Yoon-Seok Chang ◽  
Jae-Woo Choi ◽  
Kyung-Youl Baek ◽  
Seok-Won Hong ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Photocatalytic Degradation ◽  
Removal Efficiency ◽  
Star Block Copolymers ◽  
By Products

Research on the Removal Results of Hydrogen Sulfide of the Treatment of Coal Gasification Wastewater Biogas in the Anaerobic Biotrickling Filter

2012 ◽  
Vol 610-613 ◽  
pp. 2000-2005
Author(s):  
Chun Yan Xu ◽  
Hong Jun Han
Keyword(s):  
Hydrogen Sulfide ◽  
Removal Efficiency ◽  
Flow Rate ◽  
Retention Time ◽  
Operating Parameters ◽  
Inlet Flow ◽  
H2s Removal ◽  
Outlet Concentration ◽  
Volume Load ◽  
Inlet Flow Rate

The uncertainty of operating parameters hinders the practical application of the biological desulfurization. To solve this problem, this study which was conducted in room temperature, pH around seven conditions, investigated the effects of the operating parameters on the hydrogen sulfide (H2S) removal performance in the biotrickling filter, including inlet H2S concentration, inlet flow rate or gas retention time, inlet volume load and circulating liquid spraying flux. The results showed that, the inlet H2S concentration should be controlled within 800mg/m3, 650mg/m3, 400mg/m3, 300mg/m3 respectively while the inlet flow rate was 150L/h, 200L/h, 250L/h, 300L/h, at those conditions, the outlet H2S concentrations were lower than 8mg/m3 and the H2S removal efficiencies were more than 98%. The optimum gas retention time was 12.37s, corresponding to the inlet flow rate of 200L/h, at this time, even if the inlet H2S concentration as high as 700mg/m3, the removal efficiency could be still more than 98%, the outlet concentration of H2S was only 13.1mg/m3. The maximum inlet volume load was 130g/(m3•h), in this condition, the outlet concentration of H2S could be controlled below 12mg/m3, the removal efficiency could above 98.4%.

Photocatalytic degradation of Remazol Red B and Rhodamine B dyes using TiO2 nanomaterial: estimation of the effective operating parameters

2021 ◽  
Vol 233 ◽  
pp. 319-330
Author(s):  
Farid I. El-Dossoki ◽  
Tarek M. Atwee ◽  
Ahmed M. Hamada ◽  
Ashraf A. El-Bindary
Keyword(s):  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Operating Parameters ◽  
Remazol Red

Influence of operating parameters on photocatalytic degradation of phenol in UV/TiO2 process

2008 ◽  
Vol 139 (2) ◽  
pp. 322-329 ◽  
Author(s):  
Chwei-Huann Chiou ◽  
Cheng-Ying Wu ◽  
Ruey-Shin Juang
Keyword(s):  
Photocatalytic Degradation ◽  
Operating Parameters

Modeling and Optimization of Photocatalytic Degradation of Methylene Blue Using Lanthanum Vanadate

2020 ◽  
Vol 1008 ◽  
pp. 97-103
Author(s):  
Mahmoud Samy ◽  
Mona G. Ibrahim ◽  
Mohamed Gar Alalm ◽  
Manabu Fujii
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Removal Efficiency ◽  
Textile Industry ◽  
Degradation Process ◽  
Optimum Conditions ◽  
Photo Degradation ◽  
Operational Conditions ◽  
Degradation Rates ◽  
Effects Of Ph

Methylene blue (MB) is one of the commonly used dyes in the textile industry and can be used as a model pollutant for the textile industry wastewater. In this work, the photocatalytic degradation of MB by synthesized nanoparticles of lanthanum vanadate (LaVO4) was assessed. The effects of pH, initial MB concentration and catalyst dose on the removal performance of MB were investigated and measuring the optimum values of these operational conditions was performed using response surface methodology (RSM). Catalyst dose of 0.43 g/L, initial MB concentration of 5.0 mg/L, and pH of 6.86 were found to be the optimum conditions in reaction time of 60 min. A mathematical model was formed to relate the removal efficiency of MB to the aforementioned operating parameters. The removal efficiency of MB was 91% without any scavengers at a catalyst dose of 0.3 g/L, pH of 7 and initial MB concentration of 10 mg/L. The trapping experiments confirmed the participation of different reactive species in the photo-degradation process. The degradation rates of MB were 91%, 86%, 81%, 77.70% and 72% in five successive runs using LaVO4.

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