Department of Chemical Engineering

chew-john

Contact details

Room: 9 West 2.08
Tel: +44 (0) 1225 386132
EmailY.M.Chew@bath.ac.uk

PhD supervision

Interested in supervising students studying;

  • Green cleaning
  • Surface fouling and cleaning
  • Sensors and instrumentation for surface measurement
  • Two-phase flow computational modelling
  • Membrane efficiencies.

Dr John Chew

BCom, BEng, PhD (Cantab), CEng, CSci, MIChemE

Profile

Dr John Chew studied for BCom (Accounting) and BEng Hons (Chemical and Process Engineering) at the University of Canterbury, New Zealand.

He obtained a PhD in Chemical Engineering at the University of Cambridge. He then worked at Cambridge as a Research Fellow of the Royal Academy of Engineering before joining Bath in 2010.  

Research

John's research interests lie in the following two areas, with particular applications in the food and biotechnology industries.

Green Cleaning

Fouling of process surfaces is a major problem in many manufacturing and heat transfer operations.

The removal of fouling layers from process surfaces, i.e. cleaning, is a mundane but critically important task in many applications, particularly where hygiene is the key consideration.

John has been working on research related to fouling and cleaning of surface layers in the food, chemical, biological and medical sectors. His work has lasting positive impact on the ongoing issues of ‘greener’ environment and energy sustainability, in that both fouling and cleaning require extra energy to be expended, and cleaning requires the use of chemicals whose supply and disposal can be problematic.

John’s research activities are focused around:

  • Developing fluid dynamic gauging (FDG) into a surface engineering sensor for monitoring the thickness and strength of soft-solids (with University of Cambridge)
  • Fundamental studies of the formation and removal characteristics of soft deposits on porous (e.g. filter and membranes) and non-porous surfaces (e.g. steel, polymers and tailored surfaces)
  • Combine experimental studies with numerical modelling of the deformation of the surface layers to assess the performance of surface coatings and enhance cleaning and the effectiveness of environmentally friendly cleaning agen

Recent work includes:

  •  the application of FDG to investigate the deposition and removal of yeast and ballotini cake layers form on curved membranes, and biofilms formed on stainless steel and glass
  • The Green Cleaning Laboratory at Bath masters the application of FDG to porous surfaces.

There is strong collaboration with University of Cambridge, Technical University of Braunschweig, Germany and University of Canterbury, New Zealand.

Computational Fluid Dynamics

The rheology of soft fouling layer is rarely simply elastic or Newtonian. The deformation and flow behaviours are largely affected by its microstructure, and the microstructure is modified by the flow of surrounding fluid. Fusing FDG, CFD and microscopic (confocal, optical and atomic force microscopy) data sets will enable the characterisation of the material rheology and deformation behaviour more completely. John’s research work involves:

  • Modelling the fluid-structure interaction soft fouling layers
  • Modelling the flow behaviour of slurries and pastes
  • Design and optimisation of the fluid dynamic gauging system
  • Ongoing project includes combining FDG-CFD-optical imaging to study the deposition of food soils on fabrics and membranes.

Other computational interests are modelling the mass transfer characteristics in hollow fibre applications and heat transfer mechanisms of a spinning disk apparatus.

Teaching

  • Transport Phenomena
  • Particle Technology
  • MEng Design Project
  • BEng Design Project.

Publications

Book Sections

Chew, J., Joshi, H. M., Kazarian, S. G., Millan-Agorio, M., Tay, F. H. and Venditti, S., 2015. Deposit Characterization and Measurements. In: Coletti, F. and Hewitt, G., eds. Crude Oil Fouling. Oxford, U. K.: Elsevier, pp. 95-178.

Articles

Lewis, W. J. T., Mattsson, T., Chew, Y.-M. and Bird, M. R., 2017. Investigation of cake fouling and pore blocking phenomena using fluid dynamic gauging and critical flux models. Journal of Membrane Science, 533, pp. 38-47.

J. Berry, M., Taylor, C., King, W., Chew, Y.-M. and Wenk, J., 2017. Modelling of Ozone Mass-Transfer through Non-Porous Membranes for Water Treatment. Water, 9 (7), 452.

Mattsson, T., Lewis, W. J. T., Chew, Y. M. J. and Bird, M. R., 2017. The use of fluid dynamic gauging in investigating the thickness and cohesive strength of cake fouling layers formed during cross-flow microfiltration. Separation and Purification Technology

Huang, P., Chang, W.-S., Ansell, M. P., Chew, Y. M. J. and Shea, A., 2017. Porosity estimation of Phyllostachys edulis (Moso bamboo) by computer tomography and back-scattered electron imaging. Wood Science and Technology, 51 (1), pp. 11-27.

Huang, P., Zeidler, A., Chang, W.-S., Ansell, M. P., Chew, Y. M. J. and Shea, A., 2016. Specific heat capacity measurement of Phyllostachys edulis (Moso bamboo) by differential scanning calorimetry. Construction and Building Materials, 125, pp. 821-831.

Lewis, W. J. T., Agg, A., Clarke, A., Mattsson, T., Chew, Y. M. J. and Bird, M. R., 2016. Development of an automated, advanced fluid dynamic gauge for cake fouling studies in cross-flow filtrations. Sensors and Actuators A-Physical, 238, pp. 282-296.

Lewis, W., Agg, A., Clarke, A., Mattsson, T., Chew, Y.-M. and Bird, M., 2016. Forthcoming. Development of an automated, advanced fluid dynamic gauge forcake fouling studies in cross-flow filtrations. Sensors and Actuators A-Physical, 238, p. 282.

Huang, P., Chang, W.-S., Ansell, M., Chew, J. and Shea, A., 2015. Density distribution profile for internodes and nodes of Phyllostachys edulis (Moso bamboo) by computer tomography scanning. Construction and Building Materials, 93, pp. 197-204.

Wilson, D. I. and Chew, J., 2015. Green cleaning. Food and Bioproducts Processing, 93, pp. 186-187.

Mattsson, T., Lewis, W. J. T., Chew, Y. M. J. and Bird, M. R., 2015. In situ investigation of soft cake fouling layers using fluid dynamic gauging. Food and Bioproducts Processing, 93, pp. 205-210.

Peck, O. P. W., Chew, Y. M. J., Bird, M. R. and Bolhuis, A., 2015. Application of fluid dynamic gauging in the characterization and removal of biofouling deposits. Heat Transfer Engineering, 36 (7-8), pp. 685-694.

Gordon, P. W., Schöler, M., Föste, H., Helbig, M., Augustin, W., Chew, Y. M. J., Scholl, S., Majschak, J.-P. and Wilson, D. I., 2014. A comparison of local phosphorescence detection and fluid dynamic gauging methods for studying the removal of cohesive fouling layers:effect of layer roughness. Food and Bioproducts Processing, 92 (1), pp. 46-53.

Huang, J.-Y., Chew, Y.M.J. and Wilson, D.I., 2013. Investigating the effect of starting mode on food fat gel layer formation on cold surfaces. Journal of Food Engineering, 119 (3), pp. 454-463.

Ali, A., Chapman, G.J., Chew, Y.M.J., Gu, T., Paterson, W.R. and Wilson, D.I., 2013. A fluid dynamic gauging device for measuring fouling deposit thickness in opaque liquids at elevated temperature and pressure. Experimental Thermal and Fluid Science, 48, pp. 19-28.

Lewis, W. J. T., Chew, Y. M. J. and Bird, M. R., 2012. The application of fluid dynamic gauging in characterising cake deposition during the cross-flow microfiltration of a yeast suspension. Journal of Membrane Science, 405-406, pp. 113-122.

Huang, J. Y., Chew, Y. M. J. and Wilson, I. D., 2012. A spinning disc study of fouling of cold heat transfer surfaces by gel formation from model food fat solutions. Journal of Food Engineering, 109 (1), pp. 49-61.

Augustin, W., Chew, Y. M. J., Gordon, P. W., Lister, V. Y., Mayer, M., Paterson, B. R., Peralta, J. M., Scholl, S. and Wilson, D. I., 2012. Dynamic Gauging of Soft Fouling Layers on Solid and Porous Surfaces. Chemie Ingenieur Technik, 84 (1-2), pp. 46-53.

Gordon, P. W., Brooker, A. D. M., Chew, Y. M. J., Letzelter, N., York, D. W. and Wilson, D. I., 2012. Elucidating enzyme-based cleaning of protein soils (gelatine and egg yolk) using a scanning fluid dynamic gauge. Chemical Engineering Research & Design, 90 (1), pp. 162-171.

Jones, S. A., Chew, Y. M. J., Wilson, D. I. and Bird, M. R., 2012. Fluid dynamic gauging of microfiltration membranes fouled with sugar beet molasses. Journal of Food Engineering, 108 (1), pp. 22-29.

Peralta, J. M., Chew, Y. M. J. and Wilson, D. I., 2011. Effect of nozzle external geometry on the pressure and shear stress exerted on the surface being gauged in fluid dynamic gauging. Chemical Engineering Research & Design, 89 (12), pp. 2540-2551.

Peralta, J. M., Chew, Y. M. J. and Wilson, D. I., 2011. An analytical method for selecting the optimal nozzle external geometry for fluid dynamic gauging. Chemical Engineering Science, 66 (16), pp. 3579-3591.

Gu, T., Albert, F., Augustin, W., Chew, Y. M. J., Mayer, M., Paterson, W. R., Scholl, S., Sheikh, I., Wang, K. and Wilson, D. I., 2011. Application of fluid dynamic gauging to annular test apparatuses for studying fouling and cleaning. Experimental Thermal and Fluid Science, 35 (3), pp. 509-520.

Gu, T., Albert, F., Augustin, W., Chew, Y. M. J., Paterson, W. R., Scholl, S., Sheikh, I., Wang, K. and Wilson, D. I., 2011. Fluid dynamic gauging applied to annular test apparatuses for fouling and cleaning. Heat Transfer Engineering, 32 (3-4), pp. 339-348.

Lister, V. Y., Lucas, C., Gordon, P. W., Chew, Y. M. J. and Wilson, D. I., 2011. Pressure mode fluid dynamic gauging for studying cake build-up in cross-flow microfiltration. Journal of Membrane Science, 366 (1-2), pp. 304-313.

Jones, S. A., Chew, Y. M. J., Bird, M. R. and Wilson, D. I., 2010. The application of fluid dynamic gauging in the investigation of synthetic membrane fouling phenomena. Food and Bioproducts Processing, 88 (4), pp. 409-418.

Gordon, P. W., Brooker, A. D. M., Chew, Y. M. J., Wilson, D. I. and York, D. W., 2010. A scanning fluid dynamic gauging technique for probing surface layers. Measurement Science and Technology, 21 (8), 085103.

Gordon, P. W., Brooker, A. D. M., Chew, Y. M. J., Wilson, D. I. and York, D. W., 2010. Studies into the swelling of gelatine films using a scanning fluid dynamic gauge. Food and Bioproducts Processing, 88 (C4), pp. 357-364.

Saikhwan, P., Mercade-Prieto, R., Chew, Y. M. J., Gunasekaran, S., Paterson, W. R. and Wilson, D. I., 2010. Swelling and dissolution in cleaning of whey protein gels. Food and Bioproducts Processing, 88 (C4), pp. 375-383.

Nigo, R. Y., Chew, Y. M. J., Houghton, N. E., Paterson, W. R. and Wilson, D. I., 2009. Experimental studies of freezing fouling of model food fat solutions using a novel spinning disc apparatus. Energy & Fuels, 23 (12), pp. 6131-6145.

Gu, T., Chew, Y. M. J., Paterson, W. R. and Wilson, D. I., 2009. Experimental and CFD studies of fluid dynamic gauging in annular flows. AIChE Journal, 55 (8), pp. 1937-1947.

Gu, T., Chew, Y. M. J., Paterson, W. R. and Wilson, D. I., 2009. Experimental and CFD studies of fluid dynamic gauging in duct flows. Chemical Engineering Science, 64 (2), pp. 219-227.

Elhweg, B., Burns, I. W., Chew, Y. M. J., Martin, P. J., Russell, A. B. and Wilson, D. I., 2009. Viscous dissipation and apparent wall slip in capillary rheometry of ice cream. Food and Bioproducts Processing, 87 (C4), pp. 266-272.

Sahoo, P. K., Chew, Y. M. J., Mercade-Prieto, R., Wilson, D. I. and Dai, X. W., 2008. Fluid dynamic gauging studies of swelling behaviour of whey protein gels in NaOH/NaCl solutions. International Journal of Food Science and Technology, 43 (10), pp. 1901-1907.

Chew, Y. M. J., Paterson, W. R. and Wilson, D. I., 2007. Fluid dynamic gauging: A new tool to study deposition on porous surfaces. Journal of Membrane Science, 296 (1-2), pp. 29-41.

Chew, J., Saikhwan, P., Wilson, D.I., Paterson, W.R. and Gould, A., 2007. Fluid dynamic gauging: a technique for studying the cleaning of food process surfaces. Food Manufacturing Efficiency

Chew, J., Ian Wilson, D. and Paterson, W.R., 2007. Fluid dynamic gauging:A new technique for studying membrane fouling. Water Science and Technology : Water Supply, 7 (5-6).

Chew, J., Saikhwan, P., Ian Wilson, D., Paterson, W.R. and Gould, A., 2007. Swelling and Its Suppression in the Cleaning of Polymer Fouling Layers. Industrial and Engineering Chemistry Research, 46 (14), pp. 4846-4855.

Chew, J., 2006. Solvent-based cleaning of emulsion polymerization reactors. Chemical Engineering Journal, 117 (1), pp. 61-69.

Chew, J. Y. M., Paterson, W. A., Wilson, D. I., Houfling, V. and Augustin, W., 2005. A method for measuring the strength of scale deposits on heat transfer surfaces. Asia-Pacific Journal of Chemical Engineering, 13 (1-2), pp. 21-30.

Chew, J., 2005. Mechanisms in the Solvent Cleaning of Emulsion Polymerization Reactor Surfaces. Industrial and Engineering Chemistry Research, 44 (13), pp. 4605-4616.

Chew, Y.-M., 2004. Dynamische Messung der Dicke und der Mechanischen Eigenschaften von Weichen Ablagerungen. Chemie Ingenieur Technik, 76 (7), pp. 1021-1025.

Chew, J., 2004. CFD Studies of Dynamic Gauging. Chemical Engineering Science, 59 (16), pp. 3381-3398.

Chew, J., Wilson, D.I. and Paterson, W. R., 2004. Fluid dynamic gauging for measuring the strength of soft deposits. Journal of Food Engineering, 65 (2), pp. 175-187.

Conference or Workshop Items

Perera, S., Alsharif, A. and Chew, Y.-M., 2016. CFD Simulation of n-butane/Carbon Dioxide Separation from Air Using Composite Hollow Fibre Membranes. In: IChemE Fluid Separations, Emerging and Hybrid Membrane Technologies, 10 June 2016, Swansea, UK., 2016-06-10 - 2016-06-10.

Mattsson, T., Lewis, W., Chew, Y.-M. and Bird, M., 2016. Investigation of the formation and cohesive strength of cake fouling layers during cross-flow microfiltration using fluid dynamic gauging. In: 12th World Filtration Congress (WFC 12), 2016, 2016-04-11 - 2016-04-15.

Perera, S., Chew, J., Alsharif, A. and Lukyanov, D., 2016. The influence of bore fluid concentration on porous structure in a 13X zeolite adsorbent hollow fibre for gas separation. In: Saudi conference 14-15th February 2016, Scientific Society for Saudi Arabia (organized by the University of Birmingham in the UK), 2016-02-14 - 2016-02-15, Saudi conference 14-15th February, 2016, Scientific Society for Saudi Arabia (organized by the University of Birmingham in the UK.

Maltby, R. and Chew, Y.-M., 2016. CFD Modelling and Validation of Mixing in a Model Single-Use-Technology Bioreactor. In: Fluid Mixing Processes SIG Research Student Competition 2016, 2016-04-07, Imperial College London.

Allan, S., Pinwill, J., Chew, Y.-M. and Perera, S., 2016. Development of CFD Models for Adsorbent Hollow Fibres for Gas Separations.

Lertruamporn, S., Thongpiam, M., Saikhwan, P. and Chew, Y.-M., 2016. INVESTIGATION OF FABRIC CLEANING USING FLUID DYNAMIC GAUGING: Effects of Fine Bubbles. In: 2nd Annual InterPore UK Chapter conference (Joint with the Particle Characterisation Interest Group of the Royal Society of Chemistry), 2016-09-05 - 2016-09-07, University of Loughborough.

Lewis, W., Mattsson, T., Chew, Y.-M. and Bird, M., 2016. Monitoring the Growth and Removal of Cake Fouling Using Automated micro-Fluid Dynamic Gauging. In: 2nd Annual InterPore UK Chapter conference (Joint with the Particle Characterisation Interest Group of the Royal Society of Chemistry), 2016-09-05 - 2016-09-07, University of Loughborough.

Maltby, R., Lewis, W. and Chew, Y.-M., 2016. Multiphase CFD Modelling of Mixing in a Cubic Single-Use-Technology Bioreactor. In: Chem Eng Day 2016, 2016-03-31 - 2016-04-01, University of Bath.

Maltby, R., Lewis, W., Wright, S., Smith, A. and Chew, Y.-M., 2016. Multiphase CFD modelling of single-use-technology bioreactors for industrial biotechnology applications. In: 3rd International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT '16), 2016-05-02 - 2016-05-03.

Lewis, W., Chew, J. and Bird, M., 2015. Investigating the influence of buoyancy on deposition and shear-induced removal during the cross-flow microfiltration of a model suspension.

Peck, O., Chew, J., Bird, M. and Bolhuis, A., 2014. An assessment of the removal behaviour of biofilms grown under static and flow conditions.

Huang, P., Chang, W.-S., Ansell, M., Chew, J., Shea, A., Zeidler, A. and Pickering, S., 2014. Heat transfer simulation and experimental studies of bamboo in radial direction. In: World Conference on Timber Engineering (WCTE) 2014, 2014-08-10 - 2014-08-14.

Mattsson, T., Lewis, W., Chew, J. and Bird, M., 2014. In-situ Investigation of Soft Cake Fouling Layers using Fluid Dynamic Gauging.

Alsharif, A., Chew, J., Lukyanov, D. and Perera, S., 2014. Multi-channel Adsorbent Hollow Fibres for Removal of VOCs.

Peck, O., Chew, J., Bird, M. and Bolhuis, A., 2013. Application of fluid dynamic gauging in the characterisation and removal of biofouling deposits.

Ali, A., Chew, J., Paterson, W.R. and Wilson, D.I., 2013. Higher temperature and pressure fluid dynamic gauging.

Huang, J. Y., Chew, J. and Wilson, D.I., 2013. The effect of start-up on fat (and wax) fouling tests.

Lewis, W., Chew, J., Chance, R.M.J., Wilcox, M.C. and Bird, M., 2012. Investigations of cake fouling during the cross-flow microfiltration of a model suspension: Influence of buoyancy on deposition and shear-induced removal.

Lewis, W., Chew, J. and Bird, M., 2011. Experimental and CFD Studies of Fluid Dynamic Gauging in Cross-Flow Microfiltration Systems.

This list was generated on Fri Oct 20 21:10:29 2017 IST.