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Application of power addition as modelling technique for flow processes: Two case studies

Author: de Wet, P ; du Plessis, JP ; Woudberg, S Date: May 2010 In many of the continuum processes typically found in chemical engineering, the functional dependency of the dependent variable is only known for large and small values of the independent variable. Exact solutions in the transitional regime ... Read more
Basic approach to evaluate methane partial oxidation catalysts

Author: Parmaliana, A ; Frusteri, F ; Mezzapica, A ; Miceli, D ; Scurrell, MS ; Giordano, N Date: Sep 1993 The partial oxidation of methane to formaldehyde by molecular oxygen on silica and silica-supported oxide catalysts has been investigated at a pressure of 1.7 bars in the temperature range 520-650°C by using a batch reactor with external ... Read more
Chemical engineers, nanotechnology and future green economy

Author: Musee, N Date: Jan 2012 Nanotechnology is envisaged to address present human needs and secure living comforts of future generations cheaply, faster and more cleanly. To date, nanotechnology's impact on the economy and on our daily lives has been enormous. Read more
Design, scale up and safe piloting of thymol hydrogenation and menthol racemisation

Author: Dudas, J ; Hanika, J Date: Jan 2009 The hydrogenation of thymol and the racemisation of a menthol mixture were investigated as part of the development of novel process for the production of l-menthol. The key innovation in this l-menthol process is the enzymatic resolution of ... Read more
Electro-osmotic pumping of sodium chloride solutions

Author: Schoeman, JJ ; van Staden, JF Date: 20 Aug 1997 Electro-osmotic pumping (EOP) theory and its characteristics (transport numbers, brine concentration, current density, current efficiency, electro-osmotic coefficients, etc.) of Selemion AMV and CMV ion-exchange membranes were studied. The ... Read more
Excess molar volumes of (an alkanol plus a branched chain ether) at the temperature 298.15 K and the application of the ERAS model

Author: Letcher, TM ; Govender, PU Date: Dec 1997 The excess molar volumes V-m(E) {x(CH3OH or CH3CH2OH or CH3(CH2)(2)OH or CH3CH(OH)CH3 + (1 - x)(CH3(CH2)(2)}(2)O or CH3C(CH3)(2)OCH3 or CH3CH2C(CH3)(2)OCH3} have been calculated from measured values of density over the whole composition range ... Read more
Introducing a new operational policy : the PIS operational policy

Author: Pattinson, T ; Majozi, T Date: 2009 A novel operational policy, the Process Intermediate Storage operational policy, is introduced and used to synthesize, schedule and design multipurpose batch plants. The model is based on the State Sequence Network and non-uniform discretization ... Read more
Laser alloying of Al with mixed Ni, Ti and SiC powders

Author: Mabhali, Luyolo AB ; Pityana, Sisa L ; Sacks, N Date: Nov 2010 Laser alloying of aluminium AA1200 was performed with a 4.4kW Rofin Sinar Nd:YAG laser to improve the surface hardness. Alloying was carried out by depositing Ni, Ti and SiC powders of different weight ratios on the aluminium substrate. The ... Read more
Nitrate removal with reverse osmosis in a rural area in South Africa

Author: Schoeman, JJ ; Steyn, A Date: 30 May 2003 The nitrate-nitrogen concentration (>6 mgA) and the salinity (>1000 mg/l TDS) of many borehole waters in rural areas in South Africa are too high for human consumption. Therefore, an urgent need for water denitrification and water desalination ... Read more
Optimum heat storage design for heat integrated multipurpose batch plants

Author: Stamp, J ; Majozi, T Date: 2011 Heat integration to minimise energy usage in multipurpose batch plants has been in published literature for more than two decades. In most present methods, time is fixed a priori through a known schedule, which leads to suboptimal results. ... Read more
Processing of Polymer-based Nanocomposite: Processing-structure-property-performance relationships

Author: Sinha Ray, Suprakas Date: 2018 This two-volume book is useful to undergraduate and postgraduate students (polymer engineering, materials science and engineering, chemical and process engineering), as well as research and development personnel, engineers, and material scientists. Read more

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Browsing by Subject "Chemical engineering"

Browsing by Subject "Chemical engineering"

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