There is huge need to develop an alternative to hydrocarbons fuel, which does not produce CO2 or contribute to global warming - 'the hydrogen economy' is such an alternative, however the storage of hydrogen is the key technical barrier that must be overcome. The potential of gra…
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This thesis describes the research and development into a range of time-temperature integrators (TTIs) for the measurement of process values for food heat treatments. The TTIs are based on the first order thermal degradation of bacterial \(α\)-amylases. Two new TTIs are describe…
The practical feasibility and generic applicability of the direct integration in the same time frame of cell disruption by bead milling with the capture of intracellular products by fluidised bed adsorption has been demonstrated. Pilot-scale purification of the enzyme L-asparagi…
There is great need for the widespread use of indoor gas monitors as modern hermetically-sealed domestic buildings increasingly suffer from indoor air pollution. However, neither modern technologies of gas sensors nor analytical instruments are ideally suited to this purpose. Th…
Predicting flavour perception is complicated by interactions occurring both within and across sensory modalities, but understanding these interactions and the resulting multimodal integration is crucial to the formulation of successful products. Despite the commercial appeal of …
It was proposed that a phase separated system might be utilised to deliver a concentrated polysaccharide mucosal protective coating in gastro oesophageal reflux disease (GORD). In this context the phase behaviour of xanthan gum in combination with sodium alginate and other polym…
Reformulation of blended particulate materials has been always a problem for powder industry because formulators have difficulty in measuring, controlling and/or modifying the bulk flow properties of powders. A recently developed powder flow tester (PFT) by The Wolfson Centre fo…
It has previously been shown that in situ upgrading of heavy oil by Toe-to-Heel Air Injection (THAI) can be augmented by surrounding the horizontal production well with an annulus of pelleted catalyst. Despite the further upgrading achieved with this configuration, the accumulat…
In the past decades, the study of nanotechnology has brought in tremendous progress to the development of polymer electrolyte fuel cells (PEFC) and many advanced catalyst approaches have been developed. However, many of these still remain at ‘test-tube’ level and have not been i…
Ligament injuries are commonplace, with poor native healing leaving injury sites exposed to instability and further damage. A number of surgical methods have been established for reconstruction using a range of materials, but these have a high failure rate and a number of undesi…
2,5-dimethylfuran (2,5-DMF) has gathered interest as an energy-dense compound with similar fuel properties to gasoline. This thesis describes the catalytic hydrogenation of 5-hydroxymethylfurfural to 2,5-dimethylfuran, employing three different hydrogen donor sources (molecular …
The focus of this thesis is the role of the solvent and scale-up upon rate and selectivity in heterogeneous catalysed hydrogenations, which are ubiquitous in the production of fine chemicals and pharmaceuticals. A kinetic method has been developed based on rigorous statistical m…
This thesis presents an investigation into the use of four biochars (wood, rapeseed, miscanthus and sewage sludge) to generate a hydrogen-rich syngas that can be utilised in solid oxide fuel cells. Experimental investigations are split into three sections; (i) biochar characteri…
The objectives of the research presented in this thesis were: (1) optimise the processing conditions for the production of water-in-cocoa butter emulsions; (2) understand the role of water droplets on the large deformation behaviour and crystallisation properties of emulsified s…
Multilayered films are formed via coextrusion when separately extruded polymer melt streams come together in either an injector block linked to a die or a multi-manifold die. As multilayered film structures increase in complexity it becomes more difficult to control the individu…
The work presented within this thesis focuses on the synthesis, characterisation and processing of novel materials for use within solid oxide fuel cells. A range of perovskite materials, previously shown to have potential for solid oxide fuel cell applications, were selected for…
This PhD project aimed to study the separation of carbon dioxide from high pressure gas mixtures as it is directly applicable to pre-combustion carbon dioxide capture. Adsorption isotherms were produced and best fit by the Langmuir-Freundlich and dual-site Langmuir (DSL) isother…
Recently, technology and research in control systems have made fast progress in numerous fields, such as chemical process engineering. The modelling and control may face some challenges as the procedures applied to chemical reactors and processes are nonlinear. Therefore, the ai…
Bacteria form biofilms on solid surfaces by using surface adhesins and by secreting extracellular matrix components. While many biofilms are harmful, for example in clinical and industrial settings, biofilms have been shown to improve yield in biocatalysis reactions generating p…