Imperial College London

ProfessorGeoffreyMaitland

Faculty of EngineeringDepartment of Chemical Engineering

Professor of Energy Engineering
 
 
 
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Contact

 

+44 (0)20 7594 1830g.maitland Website

 
 
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Assistant

 

Mrs Sarah Payne +44 (0)20 7594 5567

 
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Location

 

401ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

218 results found

Fennell PS, yao JG, maitland GC, Zhang Zet al., Pressurized Calcium Looping in the Presence of Steam in a Spout-Fluidized-Bed Reactor with DFT Analysis, Fuel Processing Technology, ISSN: 0378-3820

JOURNAL ARTICLE

Yao JG, fennell PS, Maitland GC, zhang Z, sceats Met al., Two-Phase Fluidized Bed Model for Pressurized Carbonation Kinetics of Calcium Oxide, Energy and Fuels, ISSN: 0887-0624

A two-phase reactor model has been developed using a system of ordinary differential equations in MATLAB to model the carbonation reaction and therefore determine the kinetics of calcium oxide in a pressurised fluidised bed reactor as part of the calcium looping cycle. The model assumes that the particulate and bubble phases are modelled as a CSTR and a PFR respectively. The random pore model developed by Bhatia and Perlmutter1 is incorporated into the system of equations to predict the rate of carbonation for pressures up to 5 bara total, and CO2 partial pressures up to 150 kPa. The surface rate constant and product layer diffusivity in the random pore model expression were obtained by fitting the model to experimental data for a range of pressures, CO2 concentrations and temperatures by minimization of the resid-ual sum of squares. The surface rate constants were found to be between 3.05 and 12.9 x 10-10 m4 mol-1 s-1 for a temper-ature range of 550 to 750 °C. The product layer diffusivities were found to be between 0.06 and 23.6 x 10-13 m2 s-1 for the same temperature range. The surface rate constant and product layer diffusivity activation energy were calculated using the Arrhenius e

JOURNAL ARTICLE

Mac Dowell N, Fennell PS, Shah N, Maitland GCet al., 2017, The role of CO2 capture and utilization in mitigating climate change, NATURE CLIMATE CHANGE, Vol: 7, Pages: 243-249, ISSN: 1758-678X

JOURNAL ARTICLE

Cadogan SP, Mistry B, Wong Y, Maitland GC, Trusler JPMet al., 2016, Diffusion Coefficients of Carbon Dioxide in Eight Hydrocarbon Liquids at Temperatures between (298.15 and 423.15) K at Pressures up to 69 MPa, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 61, Pages: 3922-3932, ISSN: 0021-9568

JOURNAL ARTICLE

Chow YTF, Eriksen DK, Galindo A, Haslam AJ, Jackson G, Maitland GC, Trusler JPMet al., 2016, Interfacial tensions of systems comprising water, carbon dioxide and diluent gases at high pressures: Experimental measurements and modelling with SAFT-VR Mie and square-gradient theory, FLUID PHASE EQUILIBRIA, Vol: 407, Pages: 159-176, ISSN: 0378-3812

JOURNAL ARTICLE

Chow YTF, Maitland GC, Trusler JPM, 2016, Interfacial tensions of the (CO2 + N-2 + H2O) system at temperatures of (298 to 448) K and pressures up to 40 MPa, JOURNAL OF CHEMICAL THERMODYNAMICS, Vol: 93, Pages: 392-403, ISSN: 0021-9614

JOURNAL ARTICLE

Lee J-SM, Rochelle G, Styring P, Fennell P, Wilson G, Trusler M, Clough P, Blamey J, Dunstan M, MacDowell N, Lyth S, Yao J, Hills T, Gazzani M, Brandl P, Anantharaman R, Brandani S, Stolaroff J, Mazzotti M, Maitland G, Muller C, Dowson G, Gibbins J, Ocone R, Campbell KS, Erans M, Zheng L, Sutter D, Armutlulu A, Smit Bet al., 2016, CCS - A technology for now: general discussion, FARADAY DISCUSSIONS, Vol: 192, Pages: 125-151, ISSN: 1359-6640

JOURNAL ARTICLE

Maitland G, 2016, Importance of CCS, CHEMISTRY & INDUSTRY, Vol: 80, Pages: 32-32, ISSN: 0009-3068

JOURNAL ARTICLE

Maitland GC, 2016, Carbon Capture and Storage: concluding remarks, FARADAY DISCUSSIONS, Vol: 192, Pages: 581-599, ISSN: 1359-6640

JOURNAL ARTICLE

Peng C, Anabaraonye BU, Crawshaw JP, Maitland GC, Trusler JPMet al., 2016, Kinetics of carbonate mineral dissolution in CO2-acidified brines at storage reservoir conditions, FARADAY DISCUSSIONS, Vol: 192, Pages: 545-560, ISSN: 1359-6640

JOURNAL ARTICLE

Rufai A, Crawshaw J, Maitland G, 2016, Capillary disconnect during evaporation in porous media: Visualization of transition from stage-1 to stage-2 evaporation regime

CONFERENCE PAPER

Schmidt KAG, Pagnutti D, Curran MD, Singh A, Trusler JPM, Maitland GC, McBride-Wright Met al., 2016, New Experimental Data and Reference Models for the Viscosity and Density of Squalane (vol 60, pg 137, 2015), JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 61, Pages: 698-698, ISSN: 0021-9568

JOURNAL ARTICLE

Smit B, Graham R, Styring P, Yao J, Clough P, Lee J-SM, MacDowell N, Lyth S, Rochelle G, Hills T, Wilson G, Petit C, Kemper J, Cuellar-Franca R, Dowson G, Gazzani M, Fennell P, Sutter D, Scholes C, Azapagic A, Bell R, Gibbins J, Mazzotti M, Maitland G, Brandani S, Ocone R, Mota-Martinez M, Dunstan M, Liang P, Anantharaman R, Joss L, Stolaroff Jet al., 2016, CCS - A technology for the future: general discussion, FARADAY DISCUSSIONS, Vol: 192, Pages: 303-335, ISSN: 1359-6640

JOURNAL ARTICLE

Smit B, Styring P, Wilson G, Rochelle G, Donat F, Yao J, Trusler M, Adjiman C, Lyth S, Lee J-SM, Hills T, Brandl P, Gazzani M, Cuellar-Franca R, Fennell P, Sutter D, Bui M, Scholes C, Dowson G, Gibbins J, Joss L, Maitland G, Brandani S, Garcia-Gutierrez P, Zhang Y, Muller C, Jackson G, Ocone R, Joos L, Bell R, Graham Ret al., 2016, Modelling - from molecules to megascale: general discussion, FARADAY DISCUSSIONS, Vol: 192, Pages: 493-509, ISSN: 1359-6640

JOURNAL ARTICLE

Al Ghafri SZS, Forte E, Galindo A, Maitland GC, Trusler JPMet al., 2015, Experimental and Modeling Study of the Phase Behavior of (Heptane plus Carbon Dioxide plus Water) Mixtures, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 60, Pages: 3670-3681, ISSN: 0021-9568

JOURNAL ARTICLE

Bailey L, Lekkerkerker HNW, Maitland GC, 2015, Smectite clay - inorganic nanoparticle mixed suspensions: phase behaviour and rheology, SOFT MATTER, Vol: 11, Pages: 222-236, ISSN: 1744-683X

JOURNAL ARTICLE

Cadogan S, Maitland GC, Mistry B, Trusler JPM, Wong Tet al., 2015, Diffusion coefficients of carbon dioxide in liquid hydrocarbons at high pressures: Experiment and modeling, Pages: 69-75

CONFERENCE PAPER

Cadogan S, Maitland GC, Mistry B, Trusler JPM, Wong Tet al., 2015, Diffusion coefficients of carbon dioxide in liquid hydrocarbons at high pressures: Experiment and modeling, Pages: 144-150

In this work we have: • Obtained new experimental data for CO 2 diffusion in normal alkanes from C 6 to C 16 and in squalane (C 30 H 62 ) • Developed a universal correlation for the n-alkane systems in terms of temperature, solvent molar volume and carbon number • Squalane data suggests that the correlation should become nonlinear at high densities.

CONFERENCE PAPER

Cadogan SP, Hallett JP, Maidand GC, Trusler JPMet al., 2015, Diffusion Coefficients of Carbon Dioxide in Brines Measured Using C-13 Pulsed-Field Gradient Nuclear Magnetic Resonance, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 60, Pages: 181-184, ISSN: 0021-9568

JOURNAL ARTICLE

Dechatiwongse P, Maitland G, Hellgardt K, 2015, Demonstration of a two-stage aerobic/anaerobic chemostat for the enhanced production of hydrogen and biomass from unicellular nitrogen-fixing cyanobacterium, ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, Vol: 10, Pages: 189-201, ISSN: 2211-9264

JOURNAL ARTICLE

Hou S-X, Maitland GC, Trusler JPM, 2015, Phase equilibria of (CO2 + butylbenzene) and (CO2 + butylcyclohexane) at temperatures between (323.15 and 423.15) K and at pressures up to 21 MPa, FLUID PHASE EQUILIBRIA, Vol: 387, Pages: 111-116, ISSN: 0378-3812

JOURNAL ARTICLE

Maitland G, 2015, Refining in the reservoir, TCE The Chemical Engineer, Pages: 32-35, ISSN: 0302-0797

JOURNAL ARTICLE

McBride-Wright M, Maitland GC, Trusler JPM, 2015, Viscosity and Density of Aqueous Solutions of Carbon Dioxide at Temperatures from (274 to 449) K and at Pressures up to 100 MPa, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 60, Pages: 171-180, ISSN: 0021-9568

JOURNAL ARTICLE

Peng C, Crawshaw JP, Maitland GC, Trusler JPMet al., 2015, Kinetics of calcite dissolution in CO2-saturated water at temperatures between (323 and 373) K and pressures up to 13.8 MPa, Chemical Geology, Vol: 403, Pages: 74-85, ISSN: 1872-6836

We report measurements of the calcite dissolution rate in CO2-saturated water at pressures ranging from (6.0 to 13.8) MPa and temperatures from (323 to 373) K. The rate of calcite dissolution in HCl(aq) at temperatures from (298 to 353) K was also measured at ambient pressure with pH between 2.0 and 3.3. A specially-designed batch reactor system, implementing a rotating disc technique, was used to obtain the dissolution rate at the solid/liquid interface of a single crystal, free of mass transfer effects. We used vertical scanning interferometry to examine the texture of the calcite surface produced by the experiment and the results suggested that at far-from-equilibrium conditions, the measured calcite dissolution rate was independent of the initial defect density due to the development of a dynamic dissolution pattern which became steady-state shortly after the onset of dissolution. The results of this study indicate that the calcite dissolution rate under surface-reaction-controlled conditions increases with the increase of temperature from (323 to 373) K and CO2 partial pressure from (6.0 to 13.8) MPa. Fitting the conventional first order transition state kinetic model to the observed rate suggested that, although sufficient to describe calcite dissolution in CO2-free HCl(aq), this model clearly underestimate the calcite dissolution rate in the (CO2 + H2O) system over the range of conditions studied. A kinetic model incorporating both pH and the activity of CO2(aq) has been developed to represent the dissolution rates found in this study. We report correlations for the corresponding reaction rate coefficients based on the Arrhenius equation and compare the apparent activation energies with values from the literature. The results of this study should facilitate more rigorous modelling of mineral dissolution in deep saline aquifers used for CO2 storage.

JOURNAL ARTICLE

Remiezowicz E, Spooren J, Bay E, Cowan A, Ingram I, Abrantes P, da Ponte MN, North M, Albo J, Styring P, Priestnall M, Lamb K, Aresta M, Quadrelli EA, Heyn R, Bardow A, Webb W, Silva R, Alonso-Moreno C, Janaky C, Maitland G, Vaidyanathan S, Carrera GVSM, Reed D, Vanbroekhoven K, Yavuz CT, Pant D, Hollingsworth Net al., 2015, Capture agents, conversion mechanisms, biotransformations and biomimetics: general discussion, FARADAY DISCUSSIONS, Vol: 183, Pages: 463-487, ISSN: 1359-6640

JOURNAL ARTICLE

Schmidt KAG, Pagnutti D, Curran MD, Singh A, Trusler JPM, Maitland GC, McBride-Wright Met al., 2015, New Experimental Data and Reference Models for the Viscosity and Density of Squalane, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 60, Pages: 137-150, ISSN: 0021-9568

JOURNAL ARTICLE

Zhang D, Dechatiwongse P, Del-Rio-Chanona EA, Hellgardt K, Maitland GC, Vassiliadis VSet al., 2015, Analysis of the cyanobacterial hydrogen photoproduction process via model identification and process simulation, CHEMICAL ENGINEERING SCIENCE, Vol: 128, Pages: 130-146, ISSN: 0009-2509

JOURNAL ARTICLE

Zhang D, Dechatiwongse P, del Rio-Chanona EA, Maitland GC, Hellgardt K, Vassiliadis VSet al., 2015, Modelling of light and temperature influences on cyanobacterial growth and biohydrogen production, ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, Vol: 9, Pages: 263-274, ISSN: 2211-9264

JOURNAL ARTICLE

Zhang D, Dechatiwongse P, del Rio-Chanona EA, Maitland GC, Hellgardt K, Vassiliadis VSet al., 2015, Dynamic modelling of high biomass density cultivation and biohydrogen production in different scales of flat plate photobioreactors, BIOTECHNOLOGY AND BIOENGINEERING, Vol: 112, Pages: 2429-2438, ISSN: 0006-3592

JOURNAL ARTICLE

del Rio-Chanona EA, Dechatiwongse P, Zhang D, Maitland GC, Hellgardt K, Arellano-Garcia H, Vassiliadis VSet al., 2015, Optimal Operation Strategy for Biohydrogen Production, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 54, Pages: 6334-6343, ISSN: 0888-5885

JOURNAL ARTICLE

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