Browsing Masters by Department "Centre for Bioprocess Engineering Research"

Now showing items 1-15 of 15

Ammonium hexachlororuthenate precipitation

Author: De Klerk, Frederick Jacobus Date: 2011 Ammonium hexachlororuthenate (ACR) is a salt precipitated during a substitution reaction between ammonium and ruthenate dissolved in a strong hydrochloric acid medium. This precipitation reaction is used within the platinum industry as a means ... Read more
Atmospheric leaching of a saprolytic nickel laterite ore in chloride solutions

Author: Field, Karen Louise Date: 2008 Includes abstract. Read more
Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp

Author: Gani, Aliya Habibti Date: 2013 Production of biofuel from microalgae is an attractive and sustainable option for meeting rising global energy demands and mitigating global warming. However, for commercial production of microalgae to be economically feasible, high biomass ... Read more
Evaluation of processing options for the treatment of zinc sulphide concentrates at Skorpion zinc

Author: Fuls, Herman Franz Date: 2011 The zinc oxide resource of Skorpion Zinc, an integrated zinc mine and refinery, near Rosh Pinah in southern Namibia, will be depleted by end of 2015 with a possible extension to 2017. Extensive exploration drilling was unsuccessful. With the ... Read more
Glucose oxidase induction and the modelling of gluconic acid production using Aspergillus niger

Author: Johnson, Kim Henry Silvanus Date: 1995 The aim of this project is to establish and understand the production of glucose oxidase and gluconic acid using the Aspergillus niger bioprocess and predict its response to operating conditions. Glucose oxidase and gluconic acid are produced ... Read more
Identification and quantification of bacteria associated with cultivated Spirulina and impact of physiological factors

Author: Mogale, Motlalekgomo Date: 2016 Research into the use of 'algal' biomass for human consumption is receiving increased attention due to their favourable nutritional value, photosynthetic efficiency, and lower requirement of land and fresh water as compared to terrestrial ... Read more
Image analysis of Bacillus thuringiensis

Author: Dickason, Gregory John Date: 1998 This thesis concerns the development of a method to quantify the morphology of the bacterium Bacillus thuringiensis, and to automatically count the bacteria. The need to quantify the bacterial morphology arose out of the possibility of ... Read more
Integrating bio-based resource recovery and treatment into municipal solid waste management in developing countries: a focus on anaerobic digestion

Author: Munganga, Gracia Date: 2012 Many authors, along with the United Nations Environment Programme (UNEP), argue that biological treatments such as anaerobic digestion (AD) and composting would be suitable in developing cities due the highly organic nature of their waste. ... Read more
Investigating ferric ion production and consumption trends in a simulated e-waste bioleaching environment for maximum metal dissolution efficiency

Author: Gituma, Mark Kinoti Date: 2016 Electrical and electronic equipment has become an integral part of life in the modern world. When disposed of, it is termed Waste Electrical and Electronic Equipment (WEEE) and is one of the fastest growing waste streams in the world. Disposing ... Read more
Investigating process stresses on Saccharomyces cerevisiae using isothermal microcalorimetry

Author: Myers, Matthew Date: 2017 Maximising performance of microbial processes, including yeast-based processes, in an industrial setting requires understanding of the impact of process stresses. These may be the result of process configuration, dilution, temperature changes, ... Read more
Leaching of selected PGMs : a thermodynamic and electrochemical study employing less aggressive lixiviants

Author: Kriek, R J Date: 2008 Historically the platinum group metals (PGMs) have been, and are still being dissolved by means of rather aggressive methods, e.g. aqua regia. Limited research has been conducted into the dissolution of the PGMs using different oxidizing ... Read more
Microbial attachment to sulfide minerals in a bioleach environment

Author: Africa, Cindy-Jade Date: 2009 This research pertains to bioleaching of copper containing ores with particular reference to the copper sulfide mineral chalcopyrite (CuFeS₂). While it is focused on heap bioleaching, it has applications to stirred tank bioleaching operations. ... Read more
Preliminary investigation of growth and antimicrobial production by streptomyces polyantibioticus : from shake flask to stirred tank bioreactor

Author: Matongo, Tarisayi Martin Date: 2016 Resistance to antibiotics by microbial pathogens continues to be a major global health problem. Treatment of bacterial infections is becoming increasingly complex and expensive. Tuberculosis (TB), caused by Mycobacterium tuberculosis infection, ... Read more
Removal of zinc from a base-metal solution using ion exchange at Rustenburg Base Metal Refiners.

Author: Taute, Jacob Johannes Date: 2013 Anglo American Platinum’s expansion project, which aimed at increasing platinum production to 3.5 million oz per annum, necessitated an expansion in the Rustenburg Base Metal Refinery (RBMR) to accommodate the associated increase in the ... Read more
Systematic investigation of potential factors that affect the production costs of the bio-based and bio-degradable plastic polyhydroxyalkanoates (PHAs) by a costing analysis based on early process simulation

Author: Rumjeet, Shilpa Date: 2016 A transition is needed to shift the global economy to a more sustainable and clean economy to counteract the depletion of abiotic resources, generation of emissions and waste. Replacing petroleum plastics by bio-plastics is key to this move. ... Read more