Imperial College London

Paul Fennell

Faculty of EngineeringDepartment of Chemical Engineering

Professor of Clean Energy
 
 
 
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Contact

 

+44 (0)20 7594 6637p.fennell

 
 
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Location

 

228aBone BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

118 results found

Bond T, Tse Q, Chambon CL, Fennell P, Fowler GD, Krueger BC, Templeton MRet al., 2018, The feasibility of char and bio-oil production from pyrolysis of pit latrine sludge, ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY, Vol: 4, Pages: 253-264, ISSN: 2053-1400

JOURNAL ARTICLE

Boot-Handford ME, Virmond E, Florin NH, Kandiyoti R, Fennell PSet al., 2018, Simple pyrolysis experiments for the preliminary assessment of biomass feedstocks and low-cost tar cracking catalysts for downdraft gasification applications, BIOMASS & BIOENERGY, Vol: 108, Pages: 398-414, ISSN: 0961-9534

JOURNAL ARTICLE

Bui M, Adjiman CS, Bardow A, Anthony EJ, Boston A, Brown S, Fennell PS, Fuss S, Galindo A, Hackett LA, Hallett JP, Herzog HJ, Jackson G, Kemper J, Krevor S, Maitland GC, Matuszewski M, Metcalfe IS, Petit C, Puxty G, Reimer J, Reiner DM, Rubin ES, Scott SA, Shah N, Smit B, Trusler JPM, Webley P, Wilcox J, Mac Dowell Net al., 2018, Carbon capture and storage (CCS): the way forward, ENERGY & ENVIRONMENTAL SCIENCE, Vol: 11, Pages: 1062-1176, ISSN: 1754-5692

JOURNAL ARTICLE

Clough PT, Boot-Handford ME, Zheng L, Zhang Z, Fennell PSet al., 2018, Hydrogen Production by Sorption Enhanced Steam Reforming (SESR) of Biomass in a Fluidised-Bed Reactor Using Combined Multifunctional Particles., Materials (Basel), Vol: 11, ISSN: 1996-1944

The performance of combined CO₂-sorbent/catalyst particles for sorption enhanced steam reforming (SESR), prepared via a simple mechanical mixing protocol, was studied using a spout-fluidised bed reactor capable of continuous solid fuel (biomass) feeding. The influence of particle size (300⁻500 and 710⁻1000 µm), CaO loading (60⁻100 wt %), Ni-loading (10⁻40 wt %) and presence of dicalcium silicate support (22.6 wt %) on SESR process performance were investigated. The combined particles were characterised by their density, porosity and CO₂ carrying capacity with the analysis by thermogravimetric analysis (TGA), Brunauer-Emmett-Teller (BET), Barrett-Joyner-Halenda (BJH) and mercury intrusion porosimetry (MIP). All experiments were conducted with continuous oak biomass feeding at a rate of 0.9 g/min ± 10%, and the reactor was operated at 660 ± 5 °C, 1 atm and 20 ± 2 vol % steam which corresponds to a steam-to-carbon ratio of 1.2:1. Unsupported combined particles containing 21.0 wt % Ni and 79 wt % CaO were the best performing sorbent/catalyst particle screened in this study, when accounting for the cost of Ni and the improvement in H₂ produced by high Ni content particles. SESR tests with these combined particles produced 61 mmol H₂/gbiomass (122 g H₂/kgbiomass) at a purity of 61 vol %. Significant coke formation within the feeding tube and on the surfaces of the particles was observed which was attributed to the low steam to carbon ratio utilised.

JOURNAL ARTICLE

Erans M, Jeremias M, Zheng L, Yao JG, Blamey J, Manovic V, Fennell PS, Anthony EJet al., 2018, Pilot testing of enhanced sorbents for calcium looping with cement production, Applied Energy, Vol: 225, Pages: 392-401, ISSN: 0306-2619

© 2018 The Authors One of the main challenges for commercialising calcium looping (CaL) as a CO 2 capture technology is maintaining a high level of sorbent reactivity during long-term cycling. In order to mitigate the decay in carrying capacity, research has moved towards producing enhanced sorbents. However, this creates potential problems related to ease of scaling up production techniques and production costs, and raises the question as to whether such approaches can be used at large scale. On the other hand, a key advantage of CaL over other carbon capture technologies is synergy with the cement industry, i.e., use of spent sorbent as a feedstock for clinker production. In this work two enhanced materials: (i) limestone doped with HBr through a particle surface impregnation technique; and (ii) pellets prepared from limestone and calcium aluminate cement, were tested in a 25 kW th dual fluidised bed pilot-scale reactor in order to investigate their capture performance and mechanical stability under realistic CaL conditions. Moreover, the spent sorbent was then used as a raw material to make cement, which was characterised for phase and chemical composition as well as compressive strength. The HBr-doped limestone showed better performance in terms of both mechanical strength and stability of the CO 2 uptake when compared to that of pellets. Furthermore, it was shown that the cement produced has similar characteristics and performance as those of commercial CEM 1 cement. This indicates the advantages of using the spent sorbent as feedstock for cement manufacture and shows the benefits of synthetic sorbents in CaL and suitability of end-use of spent sorbents for the cement industry, validating their synergy at pilot scale. Finally, this study demonstrates the possibility of using several practical techniques to improve the performance of CaL at the pilot scale, and more importantly demonstrates that commercial-grade cement can be made from the lime product fro

JOURNAL ARTICLE

Fan Y, Yao JG, Zhang Z, Sceats M, Zhuo Y, Li L, Maitland GG, Fennell PSet al., 2018, Pressurized calcium looping in the presence of steam in a spout-fluidized bed reactor with DFT analysis, FUEL PROCESSING TECHNOLOGY, Vol: 169, Pages: 24-41, ISSN: 0378-3820

JOURNAL ARTICLE

Vuppaladadiyam AK, Yao JG, Florin N, George A, Wang X, Labeeuw L, Jiang Y, Davis RW, Abbas A, Ralph P, Fennell PS, Zhao Met al., 2018, Impact of Flue Gas Compounds on Microalgae and Mechanisms for Carbon Assimilation and Utilization, CHEMSUSCHEM, Vol: 11, Pages: 334-355, ISSN: 1864-5631

JOURNAL ARTICLE

Zhang Z, Yao JG, Boot-Handford ME, Fennell PSet al., 2018, Pressurised chemical-looping combustion of an iron-based oxygen carrier: Reduction kinetic measurements and modelling, FUEL PROCESSING TECHNOLOGY, Vol: 171, Pages: 205-214, ISSN: 0378-3820

JOURNAL ARTICLE

Bhave A, Taylor RHS, Fennell P, Livingston WR, Shah N, Mac Dowell N, Dennis J, Kraft M, Pourkashanian M, Insa M, Jones J, Burdett N, Bauen A, Beal C, Smallbone A, Akroyd Jet al., 2017, Screening and techno-economic assessment of biomass-based power generation with CCS technologies to meet 2050 CO2 targets, APPLIED ENERGY, Vol: 190, Pages: 481-489, ISSN: 0306-2619

JOURNAL ARTICLE

Bond T, Tse Q, Chambon CL, Fennell P, Fowler GD, Templeton MRet al., 2017, Retracted Article: The feasibility of char and bio-oil production from pyrolysis of pit latrine sludge, Environ. Sci.: Water Res. Technol., ISSN: 2053-1400

JOURNAL ARTICLE

Brandl P, Soltani SM, Fennell PS, Mac Dowell Net al., 2017, Evaluation of cooling requirements of post-combustion CO2 capture applied to coal-fired power plants, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 122, Pages: 1-10, ISSN: 0263-8762

JOURNAL ARTICLE

Brandt-Talbot A, Gschwend FJV, Fennell PS, Lammens TM, Tan B, Weale J, Hallett JPet al., 2017, An economically viable ionic liquid for the fractionation of lignocellulosic biomass, GREEN CHEMISTRY, Vol: 19, Pages: 3078-3102, ISSN: 1463-9262

JOURNAL ARTICLE

Hills TP, Sceats M, Rennie D, Fennell Pet al., 2017, LEILAC: Low cost CO2 capture for the cement and lime industries, 13th International Conference on Greenhouse Gas Control Technologies (GHGT), Publisher: ELSEVIER SCIENCE BV, Pages: 6166-6170, ISSN: 1876-6102

CONFERENCE PAPER

Leeson D, Fennell P, Mac Dowell N, Shah Net al., 2017, Simultaneous design of separation sequences and whole process energy integration, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 125, Pages: 166-180, ISSN: 0263-8762

JOURNAL ARTICLE

Leeson D, Fennell P, Shah N, Petit C, Mac Dowell Net al., 2017, A Techno-economic analysis and systematic review of carbon capture and storage (CCS) applied to the iron and steel, cement, oil refining and pulp and paper industries., 13th International Conference on Greenhouse Gas Control Technologies (GHGT), Publisher: ELSEVIER SCIENCE BV, Pages: 6297-6302, ISSN: 1876-6102

CONFERENCE PAPER

Leeson D, Mac Dowell N, Shah N, Petit C, Fennell PSet al., 2017, A Techno-economic analysis and systematic review of carbon capture and storage (CCS) applied to the iron and steel, cement, oil refining and pulp and paper industries, as well as other high purity sources, INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, Vol: 61, Pages: 71-84, ISSN: 1750-5836

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

Mechleri E, Brown S, Fennell PS, Mac Dowell Net al., 2017, CO2 capture and storage (CCS) cost reduction via infrastructure right-sizing, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 119, Pages: 130-139, ISSN: 0263-8762

JOURNAL ARTICLE

Mechleri E, Fennell PS, Mac Dowell N, 2017, Flexible operation strategies for coal- and gas-CCS power stations under the UK and USA markets, 13th International Conference on Greenhouse Gas Control Technologies (GHGT), Publisher: ELSEVIER SCIENCE BV, Pages: 6543-6551, ISSN: 1876-6102

CONFERENCE PAPER

Mechleri E, Fennell PS, Mac Dowell N, 2017, Optimisation and evaluation of flexible operation strategies for coal- and gas-CCS power stations with a multi-period design approach, INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, Vol: 59, Pages: 24-39, ISSN: 1750-5836

JOURNAL ARTICLE

Patzschke CF, Zhang J, Fennell PS, Trusler JPMet al., 2017, Density and Viscosity of Partially Carbonated Aqueous Solutions Containing a Tertiary Alkanolamine and Piperazine at Temperatures between 298.15 and 353.15 K, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 62, Pages: 2075-2083, ISSN: 0021-9568

JOURNAL ARTICLE

Sikarwar VS, Zhao M, Fennell PS, Shah N, Anthony EJet al., 2017, Progress in biofuel production from gasification, PROGRESS IN ENERGY AND COMBUSTION SCIENCE, Vol: 61, Pages: 189-248, ISSN: 0360-1285

JOURNAL ARTICLE

Soltani SM, Fennell PS, Mac Dowell N, 2017, A parametric study of CO2 capture from gas-fired power plants using monoethanolamine (MEA), INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, Vol: 63, Pages: 321-328, ISSN: 1750-5836

JOURNAL ARTICLE

Yao JG, Zhang Z, Sceats M, Maitland GC, Fennell PSet al., 2017, Two-Phase Fluidized Bed Model for Pressurized Carbonation Kinetics of Calcium Oxide, ENERGY & FUELS, Vol: 31, Pages: 11181-11193, ISSN: 0887-0624

JOURNAL ARTICLE

Zhao X, Zhou H, Sikarwar VS, Zhao M, Park A-HA, Fennell PS, Shen L, Fan L-Set al., 2017, Biomass-based chemical looping technologies: the good, the bad and the future, ENERGY & ENVIRONMENTAL SCIENCE, Vol: 10, Pages: 1885-1910, ISSN: 1754-5692

JOURNAL ARTICLE

Blamey J, Al-Jeboori MJ, Manovic V, Fennell PS, Anthony EJet al., 2016, CO2 capture by calcium aluminate pellets in a small fluidized bed, FUEL PROCESSING TECHNOLOGY, Vol: 142, Pages: 100-106, ISSN: 0378-3820

JOURNAL ARTICLE

Blarney J, Zhao M, Manovic V, Anthony EJ, Dugwell DR, Fennell PSet al., 2016, A shrinking core model for steam hydration of CaO-based sorbents cycled for CO2 capture, CHEMICAL ENGINEERING JOURNAL, Vol: 291, Pages: 298-305, ISSN: 1385-8947

JOURNAL ARTICLE

Boot-Handford ME, Florin N, Fennell PS, 2016, Investigations into the effects of volatile biomass tar on the performance of Fe-based CLC oxygen carrier materials, ENVIRONMENTAL RESEARCH LETTERS, Vol: 11, ISSN: 1748-9326

JOURNAL ARTICLE

Clough PT, Boot-Handford ME, Zhao M, Fennell PSet al., 2016, Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions, FUEL, Vol: 186, Pages: 708-713, ISSN: 0016-2361

JOURNAL ARTICLE

Gonzalez B, Blamey J, Al-Jeboori MJ, Florin NH, Clough PT, Fennell PSet al., 2016, Additive effects of steam addition and HBr doping for CaO-based sorbents for CO2 capture, CHEMICAL ENGINEERING AND PROCESSING, Vol: 103, Pages: 21-26, ISSN: 0255-2701

JOURNAL ARTICLE

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