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Chemical Engineering Electives 3rd Level CHE3067S Design and Operation of Catalytic Reactors The course focuses on the fundamental aspects of heterogeneously catalysed reactions with the aim to design reactors for catalytic reactors. The course will introduce Langmuir-Hinshelwood kinetics together with internal and external mass transport limitations to describe the rate of the process, from which catalytic reactors will be designed. Students will be expected to develop their own code to design reactors. Catalyst deactivation will be modelled. Catalyst regeneration will be modelled using classical solid-fluid models such as the shrinking core model. CHE3068S Bioprocess Engineering The course aims to develop an advanced understanding of the fundamental engineering science of bioprocess engineering. The course will build on an adequate understanding of life sciences to address the process requirements of microbial and enzymatic processes. The fundamentals of biokinetics and bioreactor systems will be addressed. Sterilisation, aseptic operation and clean room technology will be covered, as will downstream processing for product recovery. Study of important bioprocesses will be included, with examples drawn from those of significance to South Africa. The course includes selected case studies and visits to local bioprocess industries. CHE3069S Mineral and metallurgical processes This course aims to develop an understanding of the processes involved in the beneficiation of minerals, and will include the principles involved in comminution, classification, flotation, hydrometallurgy, pyro-metallurgy, crystallisation and precipitation. The course begins with a multimedia-based introduction to the field of mineral and metallurgical processing, from the mining operation to environmental rehabilitation. Students will be required to perform experiments and analyse data from a closed circuit comminution operation and batch or pilot scale flotation tests, and complete practicals using pilot scale leach cell and DC plasma-arc furnace units, respectively. CHE3070S Numerical Simulation for Chemical Engineers This course aims to develop an advanced understanding of computer arithmetic, application of similarity transforms to reaction-diffusion and rate based mass transfer; data fitting by linear leasts squares regression; application of non-linear equations techniques in mass and energy balances (VLE); application of ODE solvers, BVP solvers and the method of lines in reaction and mass transfer systems described by ODEs and PDEs; stiffness ratio; non-linear leasts squares estimation of model parameters with variance; formulate objective functions and minimisation/maximisation of process operating models; and embedded systems. Level 4 CHE4067F: Heterogeneous Catalysis This course includes: basic principles in heterogeneous catalysis; diffusion and adsorption; catalyst testing (reactions, product analysis); catalyst preparation (zeolites; metal-based catalysts); catalyst characterisation; catalysed reactions: acid catalysed reactions, metal catalysed reactions, bi- functional catalysis, oxidation catalysis and important chemical processes based on heterogeneous catalysis. CHE4068F: Bioprocess Design The aims of this course build on the fundamental bioprocess technology and engineering principles related to upstream and downstream processing. Specifically, this course is concerned with the use and application of bioprocessing skills and expertise to understand, develop and design processes for the manufacture biotechnology products taking into account aspects of process synthesis, techno- economics, scheduling, environmental assessment and biosafety. The objective of the Bioprocess Engineering Design course is to give students an opportunity to apply all of their acquired knowledge of the fundamentals of bioprocess engineering and biotechnology to the integrated design of a complete bio manufacturing plant. CHE4069F: Mineral and Metallurgical Processing II The main aim for this course is to equip students with knowledge required to model and simulate mineral beneficiation processe. The content of the course will cover the principles involved in modelling comminution, classification, flotation, hydrometallurgy, crystallisation and precipitation processes. The course will begin with an overview of the geo-metallurgy model affects the design and operation of the mine. The principles involved in modelling comminution, classification and froth flotation activities will be covered used the simulators commonly applied in designing and optimising mineral processing circuits. Students will then be required to model and simulate comminution and flotation circuits separately. Modelling of hydrometallurgical flowsheets will be considered and the student will perform a project involving modelling of leach cell. The crystallisation and precipitation will cover the modelling concepts of supersaturation; basic mechanisms of nucleation, growth, aggregation, breakage and dissolution for crystallisation and precipitation systems applied in minerals beneficiation flowsheets. CHE4057F This elective course aims to introduce 4th year chemical engineering students to the field of industrial ecology, its main topics of enquiry, the associated analysis tools, as well as the emerging practise resulting from it. Topics covered start from the biological metaphor and the systems dimension of biomimicry: interplays of producers, consumers, degraders; metabolism; symbiosis; young vs. mature eco-systems; signalling in nature. Applications covered include industrial symbiosis, material flow analysis, the circular economy, resource efficiency. Assessment is by means of one term-time assignment (40%), applying learnings to a current topic, and by a final written examination (60%). CHE4058Z This course aims to familiarise students with the environmental assessment tool known as Life Cycle Assessment, the history of its development, its diverse uses, the ISO norms, the science behind some of its key impact categories (beyond carbon and water), its use to support decisionmaking in product systems, process systems or in policy-making. Furthermore, to develop skills and insights in the important steps of goal and scope definition, inventory modelling, data quality assessment, choice of impact assessment categories, interpretation and uncertainty propagation, partly by working with LCA software and databases. Assessment is by project 50% and written final examination 50%.