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Journal Article 6

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2020 1

2019 1

2018 1

2016 2

2001 1

Keywords

VOC 3

Adsorption-Biofilm Theory 1

Air pollution 1

Air quality abatement and management 1

Depollution efficiency 1

Emission reduction 1

Meteorological influences 1

Multi-effects evaluation 1

NOx 1

NOx 1

O3 pollution 1

Ozone formation 1

Photocatalysis 1

Secondary organic aerosol 1

VOC abatement strategy 1

alumina support 1

biodegradation of toluene 1

biopurifying technology of VOC waste gas 1

cobalt oxides 1

free volume theory 1

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Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 296-305 doi: 10.1007/s11705-018-1701-3

Abstract: Gas membrane separation process is highly unpredictable due to interacting non-ideal factors, such as composition/pressure-dependent permeabilities and real gas behavior. Although molecular dynamic (MD) simulation can mimic those complex effects, it cannot precisely predict bulk properties due to scale limitations of calculation algorithm. This work proposes a method for modeling a membrane separation process for volatile organic compounds by combining the MD simulation with the free volume theory. This method can avoid the scale-up problems of the MD method and accurately simulate the performance of membranes. Small scale MD simulation and pure gas permeation data are employed to correlate pressure-irrelevant parameters for the free volume theory; by this approach, the microscopic effects can be directly linked to bulk properties (non-ideal permeability), instead of being fitted by a statistical approach. A lab-scale hollow fiber membrane module was prepared for the model validation and evaluation. The comparison of model predictions with experimental results shows that the deviations of product purity are reduced from 10% to less than 1%, and the deviations of the permeate and residue flow rates are significantly reduced from 40% to 4%, indicating the reliability of the model. The proposed method provides an efficient tool for process engineering to simulate the membrane recovery process.

Keywords： membrane vapor separation     membrane process modeling     process engineering     free volume theory     volatile organic compound    

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Research on Purifying Waste Gases Containing Volatile Organic Compounds in Low Concentration by Using Biochemical Method

Yang Xianwan,Sun Peishi,Huang Ruohua,Huang Bing,Chen Maosheng

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 64-68

Abstract: means of lab test, enlarged test and industrial test of biopurifying the waste gas containing toluene (VOC

Keywords： biopurifying technology of VOC waste gas     biodegradation of toluene     Adsorption-Biofilm Theory     industrial    

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Screening the emission sources of volatile organic compounds (VOCs) in China by multi-effects evaluation

He NIU,Ziwei MO,Min SHAO,Sihua LU,Shaodong XIE

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0828-z

Abstract: , by combining the ozone formation potential (OFP), secondary organic aerosol potential (SOAP), and VOCFor the VOC species from emissions showed the largest contributions were styrene, toluene, ethylene,

Keywords： Ozone formation     Secondary organic aerosol     Multi-effects evaluation     VOC abatement strategy    

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Impacts of emissions and meteorological changes on China’s ozone pollution in the warm seasons of 2013 and 2017

Dian Ding, Jia Xing, Shuxiao Wang, Xing Chang, Jiming Hao

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1160-1

Abstract: Specifically, the control measures implemented since 2013 in China have reduced SO2, NOx, PM2.5, and VOC

Keywords： O3 pollution     Meteorological influences     Emission reduction     NOx     VOC    

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Room temperature oxidation of acetone by ozone over alumina-supported manganese and cobalt mixed oxides

Mehraneh Ghavami, Mostafa Aghbolaghy, Jafar Soltan, Ning Chen

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 937-947 doi: 10.1007/s11705-019-1900-6

Abstract: Volatile organic compounds (VOCs) are among the major sources of air pollution. Catalytic ozonation is an efficient process for removing VOCs at lower reaction temperature compared to catalytic oxidation. In this study, a series of alumina supported single and mixed manganese and cobalt oxides catalysts were used for ozonation of acetone at room temperature. The influence of augmenting the single Mn and Co catalysts were investigated on the performance and structure of the catalyst. The manganese and cobalt single and mixed oxides catalysts of the formula Mn10%-CoX and Co10%-MnX (where X= 0, 2.5%, 5%, or 10%) were prepared. It was found that addition of Mn and Co at lower loading levels (2.5% or 5%) to single metal oxide catalysts enhanced the catalytic activity. The mixed oxides catalysts of (Mn10%-Co2.5%) and (Mn10%-Co5%) led to acetone conversion of about 84%. It is concluded that lower oxidation state of the secondary metal improves ozone decomposition and oxidation of acetone.

Keywords： ozone     VOC     manganese oxides     cobalt oxides     alumina support    

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Impact of photocatalytic remediation of pollutants on urban air quality

Christian GEORGE, Anne BEELDENS, Fotios BARMPAS, Jean-François DOUSSIN, Giuseppe MANGANELLI, Hartmut HERRMANN, Jörg KLEFFMANN, Abdelwahid MELLOUKI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0834-1

Abstract: NO and VOC uptake rates on different materials were measured in the laboratory.Effective NO and VOC abatement levels were tested under real conditions.

Keywords： Photocatalysis     Air pollution     Depollution efficiency     NOx     VOC     Air quality abatement    

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Title Author Date Type Operation

Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Journal Article

Research on Purifying Waste Gases Containing Volatile Organic Compounds in Low Concentration by Using Biochemical Method

Yang Xianwan,Sun Peishi,Huang Ruohua,Huang Bing,Chen Maosheng

Journal Article

Screening the emission sources of volatile organic compounds (VOCs) in China by multi-effects evaluation

He NIU,Ziwei MO,Min SHAO,Sihua LU,Shaodong XIE

Journal Article

Impacts of emissions and meteorological changes on China’s ozone pollution in the warm seasons of 2013 and 2017

Dian Ding, Jia Xing, Shuxiao Wang, Xing Chang, Jiming Hao

Journal Article

Room temperature oxidation of acetone by ozone over alumina-supported manganese and cobalt mixed oxides

Mehraneh Ghavami, Mostafa Aghbolaghy, Jafar Soltan, Ning Chen

Journal Article

Impact of photocatalytic remediation of pollutants on urban air quality

Christian GEORGE, Anne BEELDENS, Fotios BARMPAS, Jean-François DOUSSIN, Giuseppe MANGANELLI, Hartmut HERRMANN, Jörg KLEFFMANN, Abdelwahid MELLOUKI

Journal Article