Browsing Chemical Engineering by Title
Now showing items 225-244 of 281
-
Scientific and management support for ventilated improved pit latrines (VIP) sludge content.
(2014)Providing adequate sanitation to all in the form of VIP latrines as proposed by the South African Government Strategic Framework for Water Services does not end with building toilets. All municipalities need to plan for ... -
Selective production of difluorodimethyl ether from chlorodifluoromethane - a kinetic study using a well-mixed batch absorber.
(2013)The gas-liquid reaction between chlorodifluoromethane (R-22) and methanol, in the presence of sodium hydroxide, was investigated in an isothermal, stirred, semi-batch reactor. The objective of the study was to develop a ... -
Separation and recovery of a complexing agent in the production of lithium hexfluorophosphate.
(2019)A novel process for the production of lithium hexafluorophosphate (LiPF6) has been developed by NECSA (Nuclear Energy Corporation of South Africa). The starting materials include hexafluorophosphoric acid (HPF6) aqueous ... -
The separation of hexafluoropropylene and hexafluoropropylene oxide using toluene and a novel solvent.
(2010-09-10)ABSTRACT PELCHEM, the chemical division of NECSA, produces the fluorocarbon hexafluoropropylene (HFP) onsite. In 2005 PELCHEM initiated research into the wet oxidation of HFP to produce the higher value fluorocarbon ... -
Simulation and optimisation of the controls of the stock preparation area of a paper machine.
(2004)At Mondi Paper Ltd, Merebank, South of Durban, Paper Machine 2 has recently been transferred onto a Distributed Control System (DCS). This was seen as a good opportunity to enhance the control of the pulp feed to the ... -
Simulation tests for the operation of a water main with break pressure tanks.
(2016)The Ashley Drive break pressure tank (BPT-20 𝑀ℓ) has been installed on Durban’s Western Aqueduct. Its purpose is to release the 20 bar gravity head of the 1.4m trunk main supply from Umgeni Water at Umlaas Road. The ... -
Simultaneous neutral sulphite semichemical pulping of hardwood and softwood.
(2000)The work described in this thesis was aimed at obtaining a better understanding of the neutral sulphite semichemical pulping process employed by Mondi Kraft's Piet Retief mill, and to investigate ways to improve this ... -
The solid state reduction of chromite.
(1989)High carbon ferrochromium serves as the main chromium source for almost all chromium containing steel alloys. The traditional method for the production of high carbon ferrochromium via the reduction of chromite using ... -
Solubility studies of carbon dioxide in novel hybrid solvents using a new static synthetic apparatus.
(2019)The use of alkanolamine solutions in removing acidic gases from natural gas is common in the industry, but such technologies have disadvantages which include amongst others, solvent loss, corrosion and high heat consumption. ... -
Spatio-temporal dynamics of heterogeneously distributed populations.
(2003)No abstract available. -
A study into the production of biodiesel using homogenously catalyzed transesterification reactions.
(2020)Abstract available in the PDF -
A study of an on-line recursive filter applied to a milling circuit.
(1975)No abstract available. -
A Study of boiling parameters under conditions of laminar non-Newtonian flow with particular reference to massecuite boiling.
(1985)Crystallization is done in the sugar industry using natural circulation vacuum evaporative crystallizers known as vacuum pans. the fluid which is known as massecuite consists of a suspension of crystals in concentrate ... -
A study of comminution in a vertical stirred ball mill.
(1993)A 20 litre experimental batch and continuous test rig and 5 litre batch and 50 litre continuous test rigs for stirred ball milling were built at the University of Natal and Mintek respectively. All the mills featured a ... -
A study of hydrodynamics and mass transfer in small bore deep shaft reactors.
(2010-09-08)The phenomenology of vertical two phase flow was examined -
A study of processes occurring in flotation froths.
(1979)While the significant effect that the froth phase has on the performance of a flotation operation has recently been widely recognised, little work has been published which promotes an understanding of the physical processes ... -
A study of the cane sugar diffusion process.
(1972)A mathematical model has been developed to represent the extraction of sugar from sugar cane in the diffusion process. As a consequence of the structure of prepared cane, extraction is postulated to occur via two first ... -
The study of the extraction of pectin from dried lemon peels.
(2010-09-14)Pectin is a polysaccharide found in plant cell walls. It is a linear molecular chain of D-galacturonic acid units linked by a 1—»4 glycosidic bonds. Pectin is widely used in the food industry. The main sources of pectin ... -
A study of the factors affecting the size distribution of micro-capsules for carbonless copy paper.
(2002)The process of micro-encapsulation by emulsifying a solution in a stirred tank has been accepted as the most suitable method for the production of microcapsules for carbonless copy paper and is currently used by Mondi ... -
A study of the Fischer-Tropsch synthesis at elevated temperatures in a shock tube.
(1973)The shock tube was used to investigate the product spectrum of the initial stages of the Fischer-Tropsch synthesis carried out at elevated temperatures. Special attention was paid to the relationship between methane ...