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A stepwise process for carbon dioxide sequestration using magnesium silicates

Johan FAGERLUND, Experience NDUAGU, Ron ZEVENHOVEN, Inês ROMÃO,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 133-141 doi: 10.1007/s11705-009-0259-5

Abstract: Our approach is rooted in the thermodynamic fact that the reaction between Mg(OH) and gaseous CO formingThe main problem is, however, the chemical kinetics; the reaction is slow and has to be accelerated inWe have constructed a lab-scale PFB reactor test-setup for optimising the carbonation reaction.At high enough temperatures and conversion levels the reaction should provide the heat for the proceedingIn this paper the test facility and our latest results and progress on CO mineral carbonation are summarised

Keywords： carbonation reaction     reactor     producer     large-scale     process    

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Operando modeling and measurements: Powerful tools for revealing the mechanism of alkali carbonate-based sorbents for CO capture in real conditions

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 380-389 doi: 10.1007/s11708-023-0872-x

Abstract: The hygroscopicity of sorbent and the humidity of gas flow are crucial to shifting the carbonation reaction

Keywords： CO2 capture     carbonation     theoretical modeling     operando techniques     reaction visualization    

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A combination process of mineral carbonation with SO2 disposal for simulated flue gas by magnesia-added

Yingying Zhao, Mengfan Wu, Zhiyong Ji, Yuanyuan Wang, Jiale Li, Jianlu Liu, Junsheng Yuan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 832-844 doi: 10.1007/s11705-019-1871-7

Abstract: The desulfurization by seawater and mineral carbonation have been paid more and more attention.The influences of various factors, including digestion time of magnesia, reaction temperature, and salinityThe results show that the reaction temperature can effectively improve the carbonation reaction.After combing SO removal process with mineral carbonation, Ca removal rate has a certain degree ofThe best carbonation condition is to use 1.5 times artificial seawater (the concentrations of reagents

Keywords： mineral carbonation     wet SO2 disposal     seawater     desulfurization    

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Long-term durability of onshore coated concrete —chloride ion and carbonation effects

Seyedhamed SADATI,Mehdi K. MORADLLO,Mohammad SHEKARCHI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 2,   Pages 150-161 doi: 10.1007/s11709-016-0341-2

Abstract: Carbonation rates of up to 0.5 and 1.5 mm/year were observed at the first 88 months of exposure for soil

Keywords： carbonation     chloride ion     corrosion     service life     surface coating    

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Impacts of climate change on optimal mixture design of blended concrete considering carbonation and chloride

Xiao-Yong WANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 473-486 doi: 10.1007/s11709-020-0608-5

Abstract: Second, strength, slump, carbonation, and chloride ingress models are used to evaluate concrete propertiesThe effect of different climate change scenarios on carbonation and chloride ingress is considered.

Keywords： ternary blended concrete     climate change     optimal mixture design     carbonation     chloride ingress    

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A novel sequence batch membrane carbonation photobioreactor developed for microalgae cultivation

Caiyun Hou, Sen Qiao, Yue Yang, Jiti Zhou

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1176-6

Abstract: . • Membrane fouling was greatly mitigated by membrane carbonation. • NH4+ and P removal rates were aroundIn this study, a novel sequence batch membrane carbonation photobioreactor was developed for microalgaeHerein, membrane module was endowed functions as microalgae retention and CO2 carbonation.Furthermore, the pH was kept about 5.5–7.5 due to intermittent carbonation mode, which was suitable forScanning electron microscope images also illustrated that carbonation through membrane module could mitigate

Keywords： Membrane carbonation     SBM-C-PBR     Cultivate microalgae     Membrane fouling    

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Simulation on thermodynamic state of ammonia carbonation at low temperature and low pressure

Jingcai ZHAO, Xingfu SONG, Ze SUN, Jianguo YU

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 447-455 doi: 10.1007/s11705-013-1370-1

Abstract: This study on thermodynamic property of NH -CO -H O system provided the basic data for ammonia carbonationSimulations on vapor-liquid equilibrium (VLE) of ammonia carbonation with different physical propertiestemperature range of 273.15 K–363.15 K, the prediction of product component using E-NRTLRK model for ammonia carbonation

Keywords： vapor-liquid equilibrium     activity coefficient     carbon dioxide     ammonia     NRTL    

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Long-term effects of electrochemical realkalization on carbonated concrete

Peng ZHU, Ji ZHANG, Wenjun QU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 127-137 doi: 10.1007/s11709-019-0583-x

Abstract: The long-term effects of electrochemical realkalization on carbonated reinforced concrete with a / ratio of 0.65 were studied. Fourteen out of 16 carbonated specimens had been subjected to realkalization seven years ago, and the alkalinity of the concrete, the electrochemical characters (corrosion current density and potential) of the specimens and the corrosion conditions of the steel bars were examined. Results of different specimens and also at different time (4, 10, 13 months and 7 years after realkalization) were compared. According to the phenolphthalein and pH meter test, the alkalinity of the concrete had disappeared after seven years. Based on the potentiodynamic polarization test, various corrosion conditions had developed on the steel bars, which was verified by visual observation. All bars were in the depassivated state, and their corrosion current densities increased significantly after seven years. Cracks developed in some of the specimens, and the diverse compactness of concrete and excessive current of realkalization were considered to be possible causes. The effects of the realkalization treatment vanished after seven years.

Keywords： realkalization     concrete     carbonation     polarization curve     corrosion    

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Prediction on CO

Kaiwen HUANG, Ao LI, Bing XIA, Tao DING

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 746-759 doi: 10.1007/s11709-020-0635-2

Abstract: Carbonation of concrete is a process which absorbs carbon dioxide (CO ).Recycled aggregate concrete (RAC) may own greater potential in CO uptake due to the faster carbonationThe carbonation of RAC and the specific surface area of recycled coarse aggregates (RCAs) were tested

Keywords： RAC     CO2 uptake     carbonation     specific surface area     RCA    

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Service life prediction of fly ash concrete using an artificial neural network

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 793-805 doi: 10.1007/s11709-021-0717-9

Abstract: Carbonation is one of the most aggressive phenomena affecting reinforced concrete structures and causingOnce reinforcement is altered by carbonation, the structure will no longer fulfill service requirementsFor this purpose, the present work estimates the lifetime of fly ash concrete by developing a carbonationSix parameters affecting carbonation were used as input neurons: binder content, fly ash substitutionthat the artificial neural network has strong potential as a feasible tool to accurately predict the carbonation

Keywords： concrete     fly ash     carbonation     neural networks     experimental validation     service life    

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Thermodynamic analysis of reaction pathways and equilibrium yields for catalytic pyrolysis of naphtha

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1700-1712 doi: 10.1007/s11705-022-2207-6

Abstract: Herein, for a better catalyst design and operation parameters optimization, the reaction pathways andThe results revealed that the thermodynamically favorable reaction pathways for n/iso-paraffinsThe results are thus useful as a direction for future catalyst improvements, facilitating superior reaction

Keywords： naphtha     catalytic pyrolysis     reaction pathway     equilibrium yield    

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In-situ condition monitoring of reinforced concrete structures

Sanjeev Kumar VERMA,Sudhir Singh BHADAURIA,Saleem AKHTAR

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 420-437 doi: 10.1007/s11709-016-0336-z

Abstract: selected parameters influencing durability of reinforced concrete (RC) structures such as concrete cover, carbonation

Keywords： concrete     carbonation     chloride     corrosion     monitoring     models    

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Carbonation depth prediction of fly ash concrete subjected to 2- and 3-dimensional CO attack

CHEN Shudong, SUN Wei, ZHANG Yunsheng, GUO Fei

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 395-400 doi: 10.1007/s11709-008-0046-2

Abstract: Based on accelerated carbonation test, 1D, 2D and 3D carbonation of high performance concrete with differentThe interaction coefficients of 2D and 3D carbonation are defined.The experiments indicate that 2D and 3D carbonation have obvious interaction.The mathematical model of 2D and 3D carbonation life prediction based on Fick scattering law can be solvedThe life prediction of concrete of Sutong Bridge beam shows that the 1D, 2D, 3D carbonation prediction
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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 reaction FCC process with multi-dimensional reaction structure has more production modes. The multi-dimensional reaction structure was used to successfully develop MIP process aiming at

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

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Heterogeneous reaction mechanism of gaseous HNO

Nan ZHAO,Qingzhu ZHANG,Wenxing WANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0836-z

Abstract: We studied the heterogeneous reaction mechanism of gaseous HNO with solid NaCl.Water molecules induce surface reconstruction of NaCl to facilitate the reaction.This paper aimed at the heterogeneous reaction between gaseous HNO and solid NaCl.imply that water molecules induce the surface reconstruction, which is essential for the heterogeneous reaction

Keywords： Seasalt particles     NaCl     HNO3     Heterogeneous reaction     Reaction mechanism     Density functional theory    

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Title Author Date Type Operation

A stepwise process for carbon dioxide sequestration using magnesium silicates

Johan FAGERLUND, Experience NDUAGU, Ron ZEVENHOVEN, Inês ROMÃO,

Journal Article

Operando modeling and measurements: Powerful tools for revealing the mechanism of alkali carbonate-based sorbents for CO capture in real conditions

Journal Article

A combination process of mineral carbonation with SO2 disposal for simulated flue gas by magnesia-added

Yingying Zhao, Mengfan Wu, Zhiyong Ji, Yuanyuan Wang, Jiale Li, Jianlu Liu, Junsheng Yuan

Journal Article

Long-term durability of onshore coated concrete —chloride ion and carbonation effects

Seyedhamed SADATI,Mehdi K. MORADLLO,Mohammad SHEKARCHI

Journal Article

Impacts of climate change on optimal mixture design of blended concrete considering carbonation and chloride

Xiao-Yong WANG

Journal Article

A novel sequence batch membrane carbonation photobioreactor developed for microalgae cultivation

Caiyun Hou, Sen Qiao, Yue Yang, Jiti Zhou

Journal Article

Simulation on thermodynamic state of ammonia carbonation at low temperature and low pressure

Jingcai ZHAO, Xingfu SONG, Ze SUN, Jianguo YU

Journal Article

Long-term effects of electrochemical realkalization on carbonated concrete

Peng ZHU, Ji ZHANG, Wenjun QU

Journal Article

Prediction on CO

Kaiwen HUANG, Ao LI, Bing XIA, Tao DING

Journal Article

Service life prediction of fly ash concrete using an artificial neural network

Journal Article

Thermodynamic analysis of reaction pathways and equilibrium yields for catalytic pyrolysis of naphtha

Journal Article

In-situ condition monitoring of reinforced concrete structures

Sanjeev Kumar VERMA,Sudhir Singh BHADAURIA,Saleem AKHTAR

Journal Article

Carbonation depth prediction of fly ash concrete subjected to 2- and 3-dimensional CO attack

CHEN Shudong, SUN Wei, ZHANG Yunsheng, GUO Fei

Journal Article

Advance in FCC Process Reaction Chemistry

Xu Youhao and Wang Xieqing

Journal Article

Heterogeneous reaction mechanism of gaseous HNO

Nan ZHAO,Qingzhu ZHANG,Wenxing WANG

Journal Article