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Advance in FCC Process Reaction Chemistry

Xu Youhao and Wang Xieqing

Strategic Study of CAE 2007, Volume 9, Issue 8,   Pages 6-14

Abstract: style="text-align: justify;">Faced the stringent challenge of FCC process,  the multi-dimensional reactionstructure was proposed for FCC process reaction chemistry. The multi-dimension reaction structure mode was established on the basis of hydrocarbon reactionchemistry over acid catalyst,  but the former was different from the latter. FCC process with multi-dimensional reaction structure has more production modes.

Keywords： catalytic cracking     reaction chemistry     catalyst     two different reaction zones     multi--dimensional reaction    

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Analyzing and quantitatively evaluating the organic matter source at different ecologic zones of tidal

GAO Jianhua, YANG Guishan, OU Weixin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 81-88 doi: 10.1007/s11783-008-0016-x

Abstract: In order to explore the effect of different ecological zones and their above plants in the organic matterLastly, the organic matter sources of different ecologic zones in tidal salt marsh are evaluated, andthe organic matter accumulations in different ecologic zones induced by their plants are also comparedamount of TOC, organic matter and TN accumulated in the flat is more than that in other ecological zones
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A full-scale integrated-bioreactor with two zones treating odours from sludge thickening tank and dewatering

Jianwei Liu, Kaixiong Yang, Lin Li, Jingying Zhang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0932-8

Abstract: The removal efficiencies of H S and NH differed between the two zones.depended on the inlet concentration of substrates and the micro-environmental conditions in the individual zonesDifferent microbial populations dominated the individual zones, and the major biodegradation products

Keywords： Biological deodorization     Microbial characteristics     Ammonia     Hydrogen sulfide     Wastewater treatment plant    

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Modified landfill gas generation rate model of first-order kinetics and two-stage reaction

Jiajun CHEN , Hao WANG , Na ZHANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 313-319 doi: 10.1007/s11783-009-0025-4

Abstract: The first-order kinetics and two-stage reaction (FKTSR) model of the LFG generation rate includes mechanismsof the nutrient balance for biochemical reaction in two main stages.The main parameters of the modified FKTSR model, including the LFG production potential (), the reactionrate constant in the first stage (), and the reaction rate constant in the second stage () of 64.746&

Keywords： landfill gas (LFG)     generation rate model     first-order kinetics     two-stage reaction     outflow function    

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Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0951-5

Abstract: The laboratory experiments involved two different engineered media and two different drainage configurationsResults show that the two engineered media with different sand aggregates were able to retain about 36%

Keywords： Bioretention     Hydrologic process     Underdrain configuration     SWMM     Modeling    

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Remediation of 2,4-dichlorophenol-contaminated groundwater using nano-sized CaO in a two-dimensional

Frontiers of Environmental Science & Engineering 2020, Volume 15, Issue 5, doi: 10.1007/s11783-020-1381-3

Abstract:

• Nano CaO2 is evaluated as a remediation agent for 2,4-DCP contaminated groundwater.

Keywords： Calcium peroxide     2     4-DCP     Reaction zone     Fenton reaction    

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Experiments on the effect of the pressure on the mineral transformation of coal ash under the differentreaction atmosphere

Nijie JING, Qinhui WANG, Zhongyang LUO, Tao JIE, Xiaomin LI, Kefa CEN

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 394-399 doi: 10.1007/s11705-010-0505-x

Abstract: This paper investigated the effect of the pressures, reaction atmospheres and coal ash species on theXRD was observed for the mineral conversion and formation of new minerals with the pressures under differentThe different reaction atmospheres have different effects on the formation of coal ash minerals.

Keywords： ash fusibility     XRD analysis     PTGA     low-temperature eutectic    

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Comparison of growth and lipid accumulation properties of two oleaginous microalgae under different nutrient

Qiao ZHANG,Yu HONG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 703-709 doi: 10.1007/s11783-014-0649-x

Abstract: This study compared the growth and lipid accumulation properties of two oleaginous microalgae, namelyHQ, under different nutrient conditions.

Keywords： Scenedesmus sp. LX1     Chlorella sp. HQ     growth rate     algal biomass     lipid accumulation     triacylglycerols (TAGs)    

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CFD simulation of the hydrodynamics in an internal air-lift reactor with two different configurations

Mona EBRAHIMIFAKHAR, Elmira MOHSENZADEH, Sadegh MORADI, Mostafa MORAVEJI, Mahmoud SALIMI

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 455-462 doi: 10.1007/s11705-011-1116-x

Abstract: Computational fluid dynamics (CFD) was used to investigate the hydrodynamic parameters of two internalairlift bioreactors with different configurations.A two-phase flow model provided by the bubbly flow application mode was employed in this project.

Keywords： airlift reactor     gas holdup     liquid circulation velocity     bubbly flow     computational fluid dynamics (CFD)    

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Continuous reaction performances of benzene alkylation with long chain olefins catalyzed by ionic liquid

QIAO Congzhen, LI Chengyue

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 69-73 doi: 10.1007/s11705-008-0014-3

Abstract: Based on a compulsive mixing-reacting-separating-recycling small experimental setup,the continuous reactionThree different situations including normal continuous operation mode (reagent materials), sidetrackfeeding from different axial positions along the static mixing reactor (reagent materials) and normalEven under the relatively hypecritical reaction conditions, the single pass conversion of pure 1-dodeceneAlthough the positions along the reactor for sidetrack feeding were different, the 100.0% single pass

Keywords： stability     different     hypecritical     compulsive mixing-reacting-separating-recycling     non-benzene    

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Effect of pressure on gasification reactivity of three Chinese coals with different ranks

Chunyu LI, Jiantao ZHAO, Yitian FANG, Yang WANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 385-393 doi: 10.1007/s11705-010-0501-1

Abstract: The gasification reactivities of three kinds of different coal ranks (Huolinhe lignite, Shenmu bituminousThe gasification reaction is controlled by pore diffusion, the rate decreases with increasing total systemThe values of reaction order with steam were 0.49, 0.46, 0.43, respectively.Meanwhile, the values of reaction order with CO were 0.31, 0.28, 0.26, respectively.

Keywords： coal     gasification     pressure     reaction order     shrinking core model    

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ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized under differentreaction times

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0980-0

Abstract: methacrylate (PVDF-g-PEGMA) was synthesized using atomic transfer radical polymerization (ATRP) at differentreaction times (9 h, 19 h, and 29 h).PVDF was blended with the copolymer mixture containing PVDF-g-PEGMA, solvent and residual PEGMA under differentreaction times.In this study, we explored the effect of the copolymer mixture additives with different synthesis times

Keywords： Polyvinylidene fluoride ultrafiltration membrane     Amphiphilic copolymer     Blended modification     High flux     Atomic transfer radical polymerization    

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Hazard potential of zones of weakness in gravity dams under impact loading conditions

Herbert LINSBAUER

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 90-97 doi: 10.1007/s11709-010-0008-3

Abstract: These zones of weakness especially on the upstream side of the dam— exposed to high water pressure (static

Keywords： dam-reservoir     earthquake     impact     cracking     fracture mechanics    

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’ changes in industrial-wastewater pre-treatment: role of residual aluminum hydrolyzed species with different

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1675-3

Abstract:

● Medium poly Al salts dominated the PAC residual salts with a rational dosage.

Keywords： Coagulation/flocculation     Hydroxyl-aluminum     Hydrolysis reaction     Reactor performance     Activated sludge    

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Interactive effects of high-speed rail on nodal zones in a city: exploratory study on China

Guo LIU, Kunhui YE

Frontiers of Engineering Management 2019, Volume 6, Issue 3,   Pages 327-335 doi: 10.1007/s42524-019-0051-2

Abstract: The proposed model is composed of two variables (i.e., transportation situation and vitality) and three

Keywords： high-speed rail     nodal zone     interactive effects     sustainable urbanization     China    

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Title Author Date Type Operation

Advance in FCC Process Reaction Chemistry

Xu Youhao and Wang Xieqing

Journal Article

Analyzing and quantitatively evaluating the organic matter source at different ecologic zones of tidal

GAO Jianhua, YANG Guishan, OU Weixin

Journal Article

A full-scale integrated-bioreactor with two zones treating odours from sludge thickening tank and dewatering

Jianwei Liu, Kaixiong Yang, Lin Li, Jingying Zhang

Journal Article

Modified landfill gas generation rate model of first-order kinetics and two-stage reaction

Jiajun CHEN , Hao WANG , Na ZHANG ,

Journal Article

Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Journal Article

Remediation of 2,4-dichlorophenol-contaminated groundwater using nano-sized CaO in a two-dimensional

Journal Article

Experiments on the effect of the pressure on the mineral transformation of coal ash under the differentreaction atmosphere

Nijie JING, Qinhui WANG, Zhongyang LUO, Tao JIE, Xiaomin LI, Kefa CEN

Journal Article

Comparison of growth and lipid accumulation properties of two oleaginous microalgae under different nutrient

Qiao ZHANG,Yu HONG

Journal Article

CFD simulation of the hydrodynamics in an internal air-lift reactor with two different configurations

Mona EBRAHIMIFAKHAR, Elmira MOHSENZADEH, Sadegh MORADI, Mostafa MORAVEJI, Mahmoud SALIMI

Journal Article

Continuous reaction performances of benzene alkylation with long chain olefins catalyzed by ionic liquid

QIAO Congzhen, LI Chengyue

Journal Article

Effect of pressure on gasification reactivity of three Chinese coals with different ranks

Chunyu LI, Jiantao ZHAO, Yitian FANG, Yang WANG

Journal Article

ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized under differentreaction times

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Journal Article

Hazard potential of zones of weakness in gravity dams under impact loading conditions

Herbert LINSBAUER

Journal Article

’ changes in industrial-wastewater pre-treatment: role of residual aluminum hydrolyzed species with different

Journal Article

Interactive effects of high-speed rail on nodal zones in a city: exploratory study on China

Guo LIU, Kunhui YE

Journal Article