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Biosorption of Cr(III) from aqueous solution by freeze-dried activated sludge: Equilibrium, kinetic and thermodynamic studies

Qian YAO, Hua ZHANG, Jun WU, Liming SHAO, Pinjing HE,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 286-294 doi: 10.1007/s11783-010-0025-4

Abstract: the values of biosorption activation energy ( = −7 kJ·mol) and the intra-particle diffusionmodel demonstrated that Cr(III) biosorption was film-diffusion-controlled.

Keywords： activated sludge     biosorption     chromium     film diffusion     kinetics     thermodynamics    

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A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 325-338 doi: 10.1007/s11708-019-0618-y

Abstract: The crucial and expensive component involved in it is the gas diffusion electrode (GDE) and its degradation

Keywords： PEM fuel cell     gas diffusion electrode(GDE)     gas diffusion layer(GDL)     membrane electrode assembly     durability    

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Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 267-277 doi: 10.1007/s11709-011-0112-z

Abstract: The diffusion of chloride ions is associated and strongly affected by other ions in the pore solutionstructures was mathematically characterized by the Nernst-Planck equation which considered not only diffusionThe material models of chloride binding capacity and chloride diffusion coefficient were incorporated

Keywords： diffusion     chloride     concrete     Nernst-Planck equation     durability    

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Numerical simulation of liquid falling film on horizontal circular tubes

Fengdan SUN, Songlin XU, Yongchuan GAO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 322-328 doi: 10.1007/s11705-012-1296-z

Abstract: The objective of this study is to investigate numerically the flow characteristics of falling film onThe volume of fluid method is used to track the motion of liquid falling film and the gas-liquid interfaceThe velocity distribution and the film thickness characteristics on the top tube, some special flow characteristicsdistributions of the upper and lower parts of the tube are not strictly symmetric and non-uniform, 2) the filmare distinguished, and 5) the liquid feed height plays an important role on the formation of falling film

Keywords： falling film     horizontal tube     flow characteristics     film thickness     liquid feeder height    

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Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 428-434 doi: 10.1007/s11708-007-0062-6

Abstract: Experiments were performed to investigate the differences between the propane/air turbulent diffusionreactive flows past bluff-body and the propane/humid air turbulent diffusion reactive flows in the same

Keywords： propane/humid     propane/air turbulent     bluff-body     turbulent diffusion    

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Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 381-388 doi: 10.1007/s11705-012-1216-2

Abstract: A Pb loaded gas diffusion electrode was fabricated and used for the electroreduction of CO to formicThe preparation conditions of the gas diffusion electrode were optimized by adjusting the amounts ofpolytetrafluoroethylene (PTFE) in the gas diffusion layer and acetylene black in the catalytic layer.The electrochemical performance of the as-prepared gas diffusion electrode was studied by chronoamperometryThe optimized gas diffusion electrode showed good catalytic performance for the electroreduction of CO

Keywords： electroreduction     carbon dioxide     lead catalyst     gas diffusion electrode     formic acid    

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Experiment and optimal design of a collection device for a residual plastic film baler

Qi NIU,Xuegeng CHEN,Chao JI,Jie WU

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 4,   Pages 347-354 doi: 10.15302/J-FASE-2015077

Abstract: It is imperative to carry out research on residual plastic film collection technology to solve the seriousThe residual plastic film baler was designed as a package for film strip collection, cleaning and balingand the impurity of film package.The results show that the factors affecting the collection rate of residual film and the impurity ofwas 88.9% and the impurity of residual film package was 14.2% for the baler.

Keywords： residual film     collection device     collection rate of residual film     impurity of film package     optimization    

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evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 471-476 doi: 10.1007/s11684-014-0365-8

Abstract:

This work aims to estimate the value of diffusion weighted imaging (DWI) and diffusion tensor imagingDWI and DTI scans were performed on bilateral kidney using SE single-shot EPI, and apparent diffusion

Keywords： type 2 diabetes mellitus     microalbuminuria     diffusion weighted imaging     diffusion tensor imaging     early-stage    

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Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 471-476 doi: 10.1007/s11705-011-1130-z

Abstract: The magnetohydrodynamic (MHD) boundary layer slip flow and solute transfer over a porous plate in the presence of a chemical reaction are investigated. The governing equations were transformed into self-similar ordinary differential equations by adopting the similarity transformation technique. Then the numerical solutions are obtained by a shooting technique using the fourth order Runge-Kutta method. The study reveals that due to the increase in the boundary slip, the concentration decreases and the velocity increases. On the other hand, with an increase in the magnetic field and mass suction, both boundary layer thicknesses decreased. As the Schmidt number and the reaction rate parameter increases, the concentration decreases and the mass transfer increases.

Keywords： slip flow     MHD boundary layer     reactive solute diffusion     flat plate     suction/injection    

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Retrospect and Prospect of Study on Thin Film Lubrication

Ge Jianbin,Zhang Chaohui,Wen Shizhu

Strategic Study of CAE 2003, Volume 5, Issue 7,   Pages 84-89

Abstract:

Thin film lubrication (TFL) has been well studied as a new lubrication regime since the 90s of lastof TFL, which involves the origin of the TFL concept, advancement of measuring technique, TFL's film-forming

Keywords： thin film lubrication     ordered film     film thickness measurement     microstructure    

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Molecular diffusion in ternary poly(vinyl alcohol) solutions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 1003-1016 doi: 10.1007/s11705-021-2121-3

Abstract: The diffusion kinetics of a molecular probe—rhodamine B—in ternary aqueous solutions containing poly(We show that the diffusion characteristics of rhodamine B in such complex systems is determined by aThe presence of glycerol has no noticeable impact on rhodamine B diffusion at low concentration, butsignificantly slows down the diffusion of rhodamine B above 3.9% (w/v) due to a dominating steric inhibitionFurthermore, introducing surfactants (cationic/nonionic/anionic) to the system results in a decreased diffusion

Keywords： fluorescence correlation spectroscopy     poly(vinyl alcohol)     anomalous diffusion     crowding effects     dynamic    

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Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 373-383 doi: 10.1007/s11705-020-1949-2

Abstract: The effect of internal diffusion on char gasification with CO in the temperature range from 1123 K toThe results revealed that the effect of internal diffusion on the initial reaction rate was more significantThus, temperature zones corresponding to chemical reaction and diffusion control were identified.Moreover, the calculated effectiveness factor provided a quantitative estimation of internal diffusion

Keywords： coal char     CO2 gasification     internal diffusion     pore evolution    

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Thin-liquid-film evaporation at contact line

Hao WANG, Zhenai PAN, Zhao CHEN

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 141-151 doi: 10.1007/s11708-009-0020-2

Abstract: regions: a nonevaporating region, where the liquid is adsorbed on the wall; a transition region or thin-filmThe thin liquid film, with thickness from nanometers up to micrometers, covering the transition regionIn this paper, a review was made of the researches on thin-liquid-film evaporation.The major characteristics of thin film, thin-film modeling based on continuum theory, simulations basedon molecular dynamics, and thin-film profile and temperature measurements were summarized.

Keywords： meniscus     thin film     contact line     disjoining pressure     evaporation    

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Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 637-648 doi: 10.1007/s11709-023-0902-0

Abstract: In this study, the chloride ion diffusion and deformation properties of recycled concrete after carbonizationthe performance of the recycled aggregates and reduces their porosity, thereby reducing the chloride diffusion

Keywords： recycled concrete     carbonated recycled coarse aggregate     biaxial compression     chloride diffusion     stress    

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Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 134-140 doi: 10.1007/s11708-009-0034-9

Abstract: The intent of this study is to investigate the fuel variability on the flickering frequency of diffusion

Keywords： fuel variability     flickering frequency     diffusion flames     dynamics of combustion    

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Title Author Date Type Operation

Biosorption of Cr(III) from aqueous solution by freeze-dried activated sludge: Equilibrium, kinetic and thermodynamic studies

Qian YAO, Hua ZHANG, Jun WU, Liming SHAO, Pinjing HE,

Journal Article

A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Journal Article

Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Journal Article

Numerical simulation of liquid falling film on horizontal circular tubes

Fengdan SUN, Songlin XU, Yongchuan GAO

Journal Article

Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Journal Article

Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Journal Article

Experiment and optimal design of a collection device for a residual plastic film baler

Qi NIU,Xuegeng CHEN,Chao JI,Jie WU

Journal Article

evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Journal Article

Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Journal Article

Retrospect and Prospect of Study on Thin Film Lubrication

Ge Jianbin,Zhang Chaohui,Wen Shizhu

Journal Article

Molecular diffusion in ternary poly(vinyl alcohol) solutions

Journal Article

Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Journal Article

Thin-liquid-film evaporation at contact line

Hao WANG, Zhenai PAN, Zhao CHEN

Journal Article

Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Journal Article

Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Journal Article