Particle Technology Special Interest Group
The premier forum for particle scientists and engineers




Dr Hossein Ahmadian
Procter & Gamble Technical Centres Ltd, UK

Hossein Ahmadian is a Senior Scientist/Engineer at Procter & Gamble based in Newcastle upon Tyne. Hossein’s role in P&G is split between 1-Process Development for new initiatives,  2-Modelling & Simulation – enabling consumer innovation and learning small and 3- Connect and Development (working with Academics and Suppliers). Hossein is a Chemical Engineer and holds a PhD in Powder Technology from the University of Leeds. Over the past 4 years, Hossein has led or co-led collaborative projects with UK and EU Academia worth more than £7 million (including TSB, Marie Curie, PhD case, etc...) mostly in the area of Modelling & Simulation.


Yulong DingProfessor Yulong Ding
University of Birmingham, UK

Professor Yulong Ding is the Chamberlain Chair of Energy Storage Research at the University of Birmingham.  Prior to this Prof. Ding was the Director of the Institute of Particle Science and Engineering at the University of Leeds. He was trained as a thermophysicist and then a chemical engineer. His research has been multidisciplinary, across chemical engineering, chemistry, energy engineering and bioengineering. His current research interests cover both fundamental and applied aspects, with the fundamental research focusing on multiphase transport phenomena across the length scales, and the applied research concentrating on new energy storage technologies, novel thermodynamic cycles and nanostructured materials for energy harvesting and storage applications.

He has filed 13 patents, published >340 papers with >150 papers in peer reviewed journals (H-Index = ~29). His work on energy storage has made major contributions to the prestigious 2011 ‘The Engineer’ Energy & Environmental and Grand Prix awards, and 2012 Rushlight Energy Environmental and Power Generation and Transmission awards.


Mr Tim Freeman
Freeman Technology

Tim Freeman is Managing Director of powder characterisation company Freeman Technology for whom he has worked since the mid 1990s. He was instrumental in the original design and continuing development of the FT4 Powder Rheometer and in the past decade has co-led the team that has grown Freeman Technology from a start-up business to the global organisation of today. Through his work with various professional bodies and involvement in industry initiatives Tim is an established contributor to wider developments in powder processing.




Pablo GarciaDr Pablo García-Triñanes
University of Surrey, UK

Pablo Garcia got his first degree in Chemistry followed by a MEng in Chemical and Environmental Engineering plus a MSc in Materials Science and Technology from the University of Santiago de Compostela (Spain). During his postgraduate term he worked as a Research Assistant at the School of Engineering (ETSE) facing several responsibilities such as writing technical and progress reports for industrial project partners, preparing research proposals, supervising students or as Health and Safety Advisor. In 2010, after collaboration with the Université de Technologie de Compiègne (France) and the Technische Universität Braunschweig (Germany), he successfully defended his PhD in Chemical Engineering on the Agglomeration and Size Enlargement of Carbonate Powders, at his alma mater the University of Santiago de Compostela. He continued his progress for two years as Research Associate working in R&D and technical consulting & troubleshooting for several industrial partners and indeed contributing to leverage the academic/industry interface. In November 2012, he moved to the University of Surrey and nowadays his research interests include Engineering Studies of Particulate Materials along with modern characterization methods, particle tracking and simulation. He is also the Executive of the Particle Technology Knowlegde Cluster in Surrey

mg_picProfessor Mojtaba Ghadiri
University of Leeds, UK

Mojtaba Ghadiri is a Professor of Chemical Engineering at the University of Leeds, and until September 2011 he was the Director of the Institute of Particle Science and Engineering. He graduated in Chemical Engineering from the University of Tehran (Iran) and has an MSc from Imperial College and PhD from Cambridge. He worked for Unilever Research for two years before taking up an academic post at the University of Surrey, where he worked for 18 years before joining the University of Leeds in 2001. He has held visiting appointments at Shell Research BV, Amsterdam, Procter and Gamble, Newcastle, and Universities of Salerno and Calabria, Italy, and Florida, Gainesville. He is a Chartered Engineer and a Fellow of the Institution of Chemical Engineers. He is the Academic Adviser to the International Fine Particle Research Institute (IFPRI) and is on the editorial board of five learned journals, including being the Chairman of the European Board of KONA Powder and Particle Journal and the Subject Editor of ChERD. He is an expert assessor for the Australian, Canadian, Italian and Norwegian Research Councils as well as the EPSRC. In April 2010, he was awarded the Iinoya Award of the Society of Powder Technology, Japan, for his contributions to the promotion of international cooperation in powder technology. His research is focussed on the development of relationships between microscopic and macroscopic properties and phenomena, i.e. the way in which the microstructure of particulate solids and the micromechanics of their interactions in process equipment influence the performance of the process and product characteristics. His current and recently completed projects are funded by both EPSRC and industry, where the latter is drawn from the process and pharmaceutical sectors.


Dr Jerry Y Y Heng
Imperial College London, UK

Dr Jerry Heng currently heads the Surfaces and Particle Engineering Laboratory at the Department of Chemical Engineering in Imperial College London, UK. JH graduated from Universiti Teknologi Malaysia (UTM) with a B.Eng in Chemical Engineering (1st Class) in 2002. He was a research assistant at UTM prior to joining the Department of Chemical Engineering at Imperial College London, U.K. to pursue a Ph.D on an ORS Award working on characterisation of pharmaceutical crystal surface energetics. JH spent a year post-doc at Imperial working on novel vapour sorption characterisation protocol for studying surface damage and heterogeneity for complex organic solids, joining the faculty at Imperial College in 2007. JH’s research interest is in the broad area of material characterisation and particle engineering, specifically in the area of crystallisation and surface characterization of solid-state crystalline materials. JH's approach is based on fundamental understanding of the role of particle surface properties relating these to impact on processing, effects of processing and formulation or product performance.


Professor Richard Holdich
Loughborough University, UK

After graduation in Minerals Engineering from Birmingham University Richard worked for British Aluminium at their Gerrards Cross research park, on projects for aluminium smelters and alumina based chemical products. He then took a job as a Research Assistant at Exeter University, and completed a PhD at the same time, on filtration and sedimentation before moving back to Birmingham University as a Research Fellow, where he ran a project on particle leaching and separations. He later joined the Particle Technology group at Loughborough University and Richard became a professor of Chemical Engineering in 2008. His speciality is in the research of aspects of Particle Technology, with particular emphasis on: separations, membranes, emulsification and encapsulated particle production and in Particle Technology teaching. He has a strong interest in the use of Information Technology and Expert Systems, as well as the Internet, for the impact of research and for training.

1Dr Andy Ingram
University of Birmingham, UK

Research interests and expertise: granular materials handling and engineering in the pharmaceutical, minerals, food industries; process visualisation using PEPT, PET, PLIF, PIV; fluid flow; manmade and synthetic fibre manufacture.


Markus KraftProfessor Markus Kraft
University of Cambridge, UK

Professor Markus Kraft is a Fellow of Churchill College Cambridge and Professor in the Department of Chemical Engineering and Biotechnology. He is a member of the Singapore-Cambridge CREATE Research Centre: 'Cambridge Centre for Carbon Reduction in Chemical Technology (C4T)'. He obtained the academic degree 'Diplom Technomathematiker' at the University of Kaiserslautern in 1992 and completed his Doctor rerum naturalium in Chemistry at the same University in 1997. Subsequently, he worked at the University of Karlsruhe and the Weierstrass Institute for Applied Analysis and Stochastics in Berlin. In 1999 he became a lecturer in the Department of Chemical Engineering, University of Cambridge.

He has a strong interest in the area of computational modelling and optimisation targeted towards developing carbon abatement and emissions reduction technologies for the automotive, power and chemical industries. Together with his research students he has also contributed significantly towards the detailed modelling of combustion synthesis of organic and inorganic nanoparticles and worked on fluidisation, spray drying and the granulation of fine powders.

Markus is the Director of CMCL Innovations, a technology-intensive company, where he is involved in the design of carbon-neutral fuels and techno-economic assessment of advanced low emission technologies in general.

1Dr Mark Leaper
Aston University, UK

Mark graduated with a BEng in Chemical Engineering from Loughborough University in 1993, MSc in Bulk Solids Handling from Glasgow Caledonian University in 1995 and completed a PhD in Chemical Engineering at the University of Birmingham in 2002 in the field of fluidisation.

After post-doctorial research at the Wolfson Centre for Bulk Solids Handling, University of Greenwich and the University of Nottingham, Mark was appointed a Senior Lecturer in the Leicester School of Pharmacy at De Montfort University in 2007. He has a track record in research in powder caking, with emphasis on using Atomic Force Microscopy (AFM) to examine the mechanisms at the particle surface. His projects are being supported by Unilever Research Port Sunlight, EPSRC and the East Midlands Development Agency (EMDA). He is also a chartered engineer and became a Fellow of ChemE in 2011. In September 2012 Mark took up an academic position at the Chemical Engineering and Chemistry (CEAC) School at Aston University.

1Dr Paola Lettieri
University College London, UK

Paola graduated in Mechanical Engineering from La Sapienza University of Rome in 1994 and since then broadened her interest into Chemical Engineering working at BP Chemicals Sunbury for five years.  She was awarded a PhD in Chemical Engineering from UCL in 1999. She then spent two years as a postdoctoral researcher in the Technology Engineering Division at BP Chemicals Sunbury working on the CFD modelling of gas fluidized beds. She joined the Chemical Engineering department at UCL in January 2001 as a Research Fellow of the Royal Academy of Engineering; she is currently Reader in Chemical Engineering.

She has led the Fluidization Research Group at UCL since 2003. Her current research activities are concerned with the prediction and control of fluidized beds behaviour at process conditions, spanning applications across the chemical, petrochemical, nuclear and energy-from-waste sector.  Her research focuses on experimental measurements, fluid bed rheology, X-ray Imaging, and computational fluid-dynamics (CFD) simulations. She has also recently created a new interdisciplinary research group working on the application of Life Cycle Assessment to studying energy systems and waste management.

She is a Fellow of the Institution of Chemical Engineers (IChemE) and Chartered Engineer. She is Deputy Chair of the IChemE Particle Technology Subject Group and committee member of the IChemE Sustainability Subject Group.  She is Leader of the Energy theme for the European Federation of Chemical Engineering Section on Sustainability.  She is member of the International Expert Group on LCA for Waste Management. She is member of the Editorial Board of the International Journal of Chemical Reactor Engineering (IJCRE) and of the Journal of Computational Multiphase Flows.

 Mingzhong Li

Dr Mingzhong Li
De Montfort University, UK

Mingzhong is a Principal Lecturer in Pharmaceutical Technologies group in the School of Pharmacy at De Montfort University. He was awarded a PhD in Control and Instrumentation Engineering in 1998 from Northeastern University in China. He had been working as a post doctoral researcher at a number of universities: University of Oxford, Heriot-Watt University and the Hong Kong University of Science and Technology.

His research interests are particle characterisation, multiphase fluid-flow modelling, and on-line process monitoring and control for pharmaceutical processes, such as crystallisation, fluidised bed dryer and freeze-drying processes. He is also interested in developing analytical methods to retrieve particle size distribution from measurements by different instruments: UV-vis spectroscopy, ultrasound, image analysis and Focused-bean reflection measurement (FBRM).




Luca MazzeiDr Luca Mazzei
University College London, UK

Luca Mazzei graduated in Chemical Engineering from the University of Naples 'Federico II' in 2001. He then spent three years working for Technip KTI as a process and startup engineer on sulphur recovery and refinery tail gas treatment. Subsequently he joined the Department of Chemical Engineering at UCL first as a student, where he was awarded a PhD in 2008, and then as a lecturer. His research activities focus on the mathematical modelling, CFD simulation and experimental validation of multiphase polydisperse reactive systems, using population balance models and averaging techniques. These systems consist of a continuous phase (a gas or a liquid) in which other discontinuous phases are dispersed (particles, droplets or bubbles). Examples are fluidised bed reactors, crystallisers and bubble columns. An area of particular interest is fluidisation and granular flows, where his research has developed novel, advanced Eulerian mathematical models for the description of dense polydisperse fluidised powders and new constitutive equations for the Eulerian modelling of fluid-particle interaction forces. A second area of interest is ultrasound-aided crystallisation (sonocrystallisation), in particular conducted in microreactors. Bringing together crystallisation, microreactor technology and ultrasound engineering, this transformative research aims to develop an entirely new, and more controllable, manufacturing technology for producing particles of relevance to the pharmaceutical industries with better quality and greater reproducibility. He has authored 28 publications comprising original papers, a review and two book chapters.


Professor Raffaella Ocone
Heriot-Watt University, UK

Raffaella Ocone, FREng, FRSE is Professor of Chemical Engineering in the School of Engineering and Physical Sciences at Heriot-Watt University (HWU) in the UK. Before joining HWU, she was a Reader in Chemical Engineering in the Department of Chemical Engineering at Nottingham, UK; Lecturer at the University of Naples, Italy; and Visiting Professor at Louisiana State University, USA and the University Claude Bernard, France. In 2007 she was awarded the title of Cavaliere of the Order of Merit of the Italian Republic for scientific merits. She held a Royal Academy of Engineering/Leverhulme Trust Senior Research Fellowship and a Royal Society of Edinburgh/Scottish Government Support Fellowship to model carbon capture through chemical looping technology.

With a first degree from her native Italy and a masters and doctorate from Princeton in the US, Professor Ocone is an internationally known researcher in the area of the modelling of complex systems encompassing the hydrodynamics of particulate flow and reactive systems. Her most recent work, capitalising on her expertise in particle technology and reaction kinetics, investigates chemical looping combustion, seen as one of the most promising technologies in the development of carbon capture and storage. She also works on the underlying principles of thermal and catalytic crackers and hydrodesulphurisation plants. Professor Ocone has taken a leading role in debate on the ethics of engineering and chaired the Royal Academy of Engineering’s Teaching Ethics group.

1Dr Gavin K. Reynolds
Pharmaceutical Development, R&D, AstraZeneca

Gavin Reynolds is an Associate Principal Scientist in Predictive Science, based within Pharmaceutical Development at AstraZeneca, Macclesfield. 

Gavin completed a PhD at the University of Sheffield in 2001. Following this, he worked with the Particle Products Group at the University of Sheffield and was appointed a lecturer in 2005. In 2006 he joined AstraZeneca to start building the process engineering capability in Product Development.  His interests include applying mechanistic modelling and simulation to pharmaceutical processes and developing process understanding.  At AstraZeneca he has also gained extensive experience in developing and implementing design space descriptions and control strategy elements as part of the evolving Quality by Design initiative.

1Dr Christian Seiler
Director, Pharma XP Consulting Ltd. & Technical Consultant, ViiV Healthcare

Christian has a Masters degree and PhD in chemical engineering from the Universities of Karlsruhe, Germany and Birmingham, UK, respectively. He has been an active member of the IChemE PTSIG committee since 2002, having been its treasurer (2004-2007), deputy chair (2007 & 2008) and chair (2009 & 2010).

After working for 13 years in the Pharmaceutical R&D department of MSD/Merck, where he was a Senior Principal Scientist and the leader of the Controlled Release Centre of Excellence, he set up his own consultancy company, Pharma XP Consulting Ltd., which specializes in oral drug delivery & technology innovation. He is currently consulting primarily for the GSK/Pfizer/Shionogi Joint Venture ViiV Healthcare, providing technical & strategic oversight to its technology transfer and early development activities (mainly in Russia, India and the UK).

In addition to his PTSIG commitments, Christian is also the current chair of the Annual Meeting Committee of the Controlled Release Society (CRS), headquartered in the US.

Jonathan SevilleProfessor Jonathan Seville 
University of Surrey, UK

Professor Jonathan Seville is Dean of Engineering and Physical Sciences at the University of Surrey. He has degrees in Chemical Engineering from the Universities of Cambridge and Surrey and has held visiting appointments at the University of British Columbia and the Technical University of Denmark. He is a Chartered Engineer, a Fellow of the Institution of Chemical Engineers and a Fellow of the Royal Academy of Engineering. His research is aimed at understanding and improving manufacturing processes involving granular solid materials such as detergents, pharmaceuticals and foodstuffs. He has carried out fundamental and applied research for the UK Research Councils, Unilever Research, Procter & Gamble, Rhône-Poulenc, Astra Zeneca, BP, Weetabix, United Biscuits, Huntsman Tioxide, Merck Sharp and Dohme, GSK, Pfizer, Cerel, Scapa, BOC and GEA Pharma Systems. Achievements include patented inventions for supercritical route particle formation, the first full experimental validation of discrete element codes in solids mixing, development of a continuous pharmaceutical granulation process and the first large scale use of mobile positron imaging on an industrial site. Before moving to Surrey, he was for 10 years head of Chemical Engineering at the University of Birmingham, where he established the UK’s first research centre in Formulation Engineering and co-founded the Positron Imaging Centre, which has pioneered the use of positron-emitting radioactive tracers in engineering studies. 





Professor Stefaan Simons, BSc (hons), PhD, CEng FIChemE
University College London, UK

Professor Simons, CEng FIChemE, is Professor of Chemical Engineering at University College London (UCL), Director of the Centre for CO2 Technology (in London) and inaugural Director of the International Energy Policy Institute (IEPI) at UCL Australia. His research expertise is founded on particle technology, with a focus on the energy, minerals and pharmaceutical sectors, which he has used to develop low carbon technologies and processes for the energy and chemical industries. In 2009 he was awarded a Royal Academy of Engineering Global Research Fellowship to develop his ideas on the open innovation of such technologies, spending time at University California, Berkeley and the University of Melbourne. Professor Simons is responsible for introducing chemical engineering degree programmes into Kazakhstan and Russia and was the inaugural Dean of Engineering at Nazarbayev University in Astana, Kazakhstan’s capital city, of which UCL is a strategic partner.

Professor Simons has more than 200 publications and holds the BHP Billiton Chair of Energy Policy.

 David Smith

Eur Ing David Smith
Procter & Gamble Technical Centres Ltd, UK

David obtained a BSc in Chemical Engineering at the University of Birmingham, UK in 1987. He joined the Process Development Department of Procter & Gamble in September 1987 where he was involved in the development of processes for the production of detergents.

He is now a Principal Engineer at Procter & Gamble working in Process Development for Household products based at the Global Technical Centre in Newcastle upon Tyne.

David is a chartered engineer, a member of the Fédération Européenne d'Associations Nationales d'Ingénieurs and a Fellow of IChemE.

1Dr Jin Sun
University of Edinburgh, UK

Dr Jin Sun is a lecturer at the School of Engineering in the University of Edinburgh. He obtained his PhD degree in mechanical and chemical engineering from Iowa State University in the US in 2007 and conducted his post-doctoral research in Chemical Engineering in Princeton University. His research aims to establish predictive links between particle properties and interactions and their collective behaviour in dense granular flows during diverse processes, such as fluidisation and silo discharge. To this end, he employs and develops computational and theoretical tools synthesising particle-scale experimental data, discrete element simulation, continuum and statistical mechanics in a multiscale modelling framework. Recently, he is focusing on understanding particle behaviour in additive manufacturing processes, advocating a greater appreciation of particle technology in this new area.


Dr Daryl R. Williams
Imperial College London, UK

Daryl R. Williams (DRW) graduated with a B.Sc. (Hons) from University of Melbourne, Australia and a M.Sc. in Polymer Science from Lehigh University, USA before coming to Imperial College London to start his Ph.D. Following completion of his PhD in Composite Interfaces and after a period as a postdoctoral researcher , DRW was appointed as an EPSRC Advanced Research Fellow.  He was subsequently appointed a Senior Lecturer in Chemical Engineering in Imperial College London and is currently the Director of the Discovery Space and a Reader in Particle Science.

DRW has published over 70 papers in refereed journals and been granted international 5 patents. He has expertise in advanced materials characterisation and is a world leader in advanced instrumental characterisation of solids. He is also the founder of Surface Measurement Systems Ltd. (SMS) and inventor of the Dynamic Vapor Sorption method. SMS is the technological market leader in advanced vapour sorption instruments for materials characterisation.

His research interests include the surface and bulk characterisation of complex organic solids, including especially biopharmaceutics, as well as their manufacture using spray drying, crystallisation, freeze drying, milling and granulation.  His research work has been sponsored by major industrial companies and government organisations including EPSRC, BBSRC, Pfizer, Astra-Zeneca, Kelloggs, Unilever, P&G, Avecia and GSK.

1Professor Richard A Williams FREng, ATSE, FIChemE, FIMMM
University of Birmingham, UK

Richard is a graduate of Imperial College in Mineral Technology  and PhD in electrochemical behaviour of mineral suspensions. Following periods with Anglo American and De Beers he held academic appointments at Manchester (the former UMIST), Exeter (Camborne School of Mines) and as the founder of the Institute of Particle Science and Engineering (University of Leeds). Currently he is Professor of Energy and Mineral Resources Engineering at University of Birmingham. He has worked in development of colloid engineering systems including the scale up of novel separation, formation and filtration systems. In particular the development of membrane and rotating membrane emulsification, in-situ aggregation modelling, and the development and application of industrial process tomography. He is an editor of IChemE (CHERD), Particuology, Advanced Particle Technology and on editorial board of Minerals Engineering. His work is archived on Google Scholar.

He has research interests in colloid science and engineering, emulsions, industrial scale manufacturing of nanoscale materials, in-process sensing, mineral separation technology, process modelling and simulation, nuclear plant decommissioning, energy storage technology and policy, cryogenic heat systems and green business innovations.

Stefan ZiganDr Stefan Zigan
University of Greenwich, UK

After graduating as a chemical engineer from the University of Applied Sciences in Berlin, Germany, in 2001 Stefan worked as a process design engineer in the aerospace industry designing gas management systems for airships. He also worked as a product design engineer for the car manufacturing company Freudenberg focusing on the development and testing of granular based products for car suspension systems. After a few years working in industry he went back to academia to do a PhD in scaling and minimising segregation in industrial storage silos. He was recently appointed a lecturer in thermofluids at the University of Greenwich, UK. Stefan’s research focuses on scaling and understanding flow and flow assurance problems in multi phase flows. He applies modelling techniques such as CFD and DEM as well as experiments to study phenomena in granular materials and fluids. He has a special interest in sustainable energies and energy storage systems (eg, lithium ion batteries). Stefan is a board member of the not-for-profit organisation Phalison which is organising knowledge and technology transfer with the Bolivian government to train researchers in Bolivia in lithium technologies and energy storage systems. He is also a member of the scientific board of the Bolivian National Evaporite Deposits Division.

My IChemE

IChemE is a registered charity in England & Wales (214379), and a charity registered in Scotland (SC 039661).