Browsing Chemical Engineering by Title
Now showing items 186-205 of 281
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Neural network modelling and prediction of the flotation deinking behaviour of complex recycled paper mixes.
(2011)In the absence of any significant legislation, paper recycling in South Africa has grown to a respectable recovery rate of 43% in 2008, driven mainly by the major paper manufacturers. Recently introduced legislation will ... -
Neural network models for leukaemia.
(2009)Artificial neural networks (ANN) can detect complex non-linear relationships between independent and dependent variables. Properly trained ANNs have repeatedly demonstrated superior predictive accuracy to other predictive ... -
Nucleation induced by high frequency sound for the production of sugar refinery seed crystals.
(2016)The crystallisation process is the second oldest unit operation in existence and a sine qua non in the production of crystalline sugar. It comprises two distinct phases viz. nucleation and the growth of the subsequent ... -
Optimal design of a secondary milling circuit for treating chromite-rich UG-2 platinum ores.
(2011)Extraction of platinum group elements (PGE) is a major source of revenue in South Africa and the reserves represent about 75 per cent of world reserves. Most of the remaining Platinum Group Mineral (PGM) reserves are located ... -
Optimal operation of a water distribution network by predictive control using MINLP.
(2004)The objective of this research project is to develop new software tools capable of operational optimisation of existing, large-scale water distribution networks. Since pumping operations represent the main operating cost ... -
The optimisation of pebble grinding.
(2013)Secondary pebble milling is an attractive alternative to using ball-mills. It is of particular interest in older mines where tonnage has been reduced, spare mills are available and savings in operating cost are essential ... -
Optimization of a multi-level steam distribution system by mixed integer non-linear programming.
(2001)The objective of this project is to optimize the SAPREF oil refinery steam distribution in which imbalances between the various levels presently require the venting of steam from the lowest level. The overall steam balance ... -
Performance studies of the tubular filter press.
(1992)The tubular filter press is a novel tubular configured filter press for the filtration or dewatering of sludges. The unique features of the filter press are: (i) during the cake deposition cycle, cake is deposited on ... -
Phase equilibria of refrigerant gas hydrate systems in the presence of sucrose.
(2015)The South African sugar industry has the potential to be one of the largest suppliers of renewable energy into the national energy grid. The majority of the sugar mills obtain their fuel requirements by burning of final ... -
Phase equilibrium investigation of the water and acetonitrile solvent with heavy hydrocarbons.
(2006)Thermodynamics plays an important role for separation processes in chemical industries. Phase equilibrium is of special interest in chemical engineering as separation processes such as distillation and extraction involve ... -
Phase equilibrium measurements at low-to-moderate pressures for systems containing n-Hexane, 1-Hexene and n-Methyl-2-pyrrolidone.
(2012)The primary focus of this study is the measurement and modeling of binary and ternary VLE data. The measurements of binary and ternary systems were undertaken on a fully automated dynamic VLE apparatus. The glass dynamic ... -
Phase equilibrium studies of NFM and toluene with heavy hydrocarbons and the conceptual process design of an aromatics recovery unit.
(2017)Distillation and extraction are commonly employed phase separation techniques, and improved efficiency and cost reduction in these large-scale processes are motivating factors behind thermodynamic equilibrium investigations. ... -
Practical on-line model validation for model predictive controllers (MPC)
(2010)A typical petro-chemical or oil-refining plant is known to operate with hundreds if not thousands of control loops. All critical loops are primarily required to operate at their respective optimal levels in order for the ... -
A pre-screening tool for the anaerobic treatment of complex industrial effluents and wastewaters.
(2003)The objective of this investigation was to assess the potential of a titration bioassay i.e.: The Methanogenic Activity and Inhibition Analyser (MAlA), to determine the biodegradability of complex industrial effluents ... -
Precipitation and valorisation of lignin obtained from South African kraft mill black liquor.
(2016)Abstract available in PDF file. -
The prediction of multicomponent ion exchange equilibria with particular reference to the system involved in the recovery of uranium.
(1976)The problem of predicting the general ion exchange equilibria pertaining to systems of industrial significance is generated by the multicomponent nature of such systems and the nonidealities which may be present in both ... -
Prediction of the physical properties of pure chemical compounds through different computational methods.
(2014)Liquid thermal conductivities, viscosities, thermal decomposition temperatures, electrical conductivities, normal boiling point temperatures, sublimation and vaporization enthalpies, saturated liquid speeds of sound, ... -
The predictive modelling of the performance of a crude oil fractionator in terms of gas chromotographic characterization.
(1973)No abstract available. -
Predictive solvent and anti-solvent selection method for pharmaceutical and biological products and intermediates.
(2017)Abstract available in pdf. -
Preliminary investigation into the use of gas hydrate technology for the treatment of vinasse.
(2017)Abstract available in PDF file.