Browsing Research Articles (Process Engineering) by Title
Now showing items 1-20 of 43
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The applicability of nanofiltration for the treatment and reuse of textile reactive dye effluent
(Water Research Commission, 2015)The main aim of the study was to test the feasibility of using nanofiltration (NF) processes for the treatment of reactive dyebath effluents from the textile industry, in order to recover the water and chemicals (salts) ... -
The application of activated carbon for the adsorption and elution of platinum group metals from dilute cyanide leach solutions
(Southern African Institute of Mining and Metallurgy, 2013)ENGLISH ABSTRACT: The research presented in this paper investigated the practical aspects of the recovery of platinum group metals (PGMs) from a dilute cyanide leach solution containing base metals, in a manner similar to ... -
Application of membrane technology in a base metal refinery
(Southern African Institute of Mining and Metallurgy, 2013)Nanofiltration (NF) has attracted much attention over the past few years due to the reduced energy consumption compared to reverse osmosis (RO) and better separation performance compared to ultrafiltration (UF). Although ... -
Applications of microwave heating in mineral processing
(Academy of Science of South Africa, 1999)Many minerals are effective absorbers of microwave energy, whereas in general gangue materials are not. This suggests applying microwave heating to mineral processing to effect selective heating of mineral phases. Many ... -
CFD modelling of global mixing parameters in a Peirce-Smith converter with comparison to physical modelling
(Berkeley Electronic Press, 2011)The flow pattern and mixing in an industrial Peirce-Smith converter (PSC) has been experimentally and numerically studied using cold model simulations. The effects of air volumetric flow rate and presence of overlaying ... -
Characterization of precipitate formed during the removal of iron and precious metals from sulphate leach solutions
(The Southern African Institute of Mining and Metallurgy, 2017-08)ENGLISH ABSTRACT: Nickel sulphate leach solutions produced in the first leaching stage of base metal refineries contain impurities such as iron as well as precious metals (Rh, Ru, and Ir). Iron precipitation results in ... -
Comparison of constitutive and inducible β-fructofuranosidase production by recombinant Pichia pastoris in fed-batch culture using defined and semi-defined media
(Elsevier, 2016)ENGLISH ABSTRACT: Short-chain fructooligosaccharides produced from sucrose by transfructosylation using β-fructofuranosidase (FFase), an industrially important enzyme, finds application in pre-biotics, sweeteners and ... -
Cyanobacterial growth in minimally amended anaerobic digestion effluent and flue-gas
(MDPI, 2019)ENGLISH ABSTRACT: Anaerobic digestion (AD) is an important industrial process, particularly in a biorefinery approach. The liquid effluent and carbon dioxide in the off-gas, can be used to produce high-value products through ... -
Desorption of isobutyl acetate into air as a low-cost alternative system for the measurement of liquid phase mass transfer coefficients
(AIDIC, 2018)ENGLISH ABSTRACT: A study was conducted in enhancing the measurement of volumetric liquid phase mass transfer coefficients (K˪a) in packed columns, by re-considering the application of conventional desorption and absorption ... -
Development of fuzzy rule-based systems for industrial flotation plants by use of inductive techniques and genetic algorithms
(Southern African Institute of Mining and Metallurgy, 2000)Control of flotation processes is mostly managed by plant operators, who assess the performance of the plant based on their own experience and other heuristic rules. These rules tend to be subjective or ill-defined, since ... -
The effect of fluid properties and packing size on the hydrodynamics of packed columns
(AIDIC, 2018)ENGLISH ABSTRACT: The effect of fluid physical properties on the hydrodynamic behaviour in a packed column with 1.5” and 2.5” fourth generation random packing was investigated by measuring the pressure drop and liquid ... -
Empirical and economic modelling of winery and effluent parameters
(WineLand Publications, 2004-12)INTRODUCTION: Wine production in South Africa is strongly delocalised, with numerous small-to-medium sized producers situated in several regions within the Western Cape. The production process generally follows traditional ... -
Estimation of the maximum end buffer impact force for a given level of reliability
(South African Institution of Civil Engineering, 2012-04)ENGLISH ABSTRACT: The first paper in this set of two, titled The effect of parameters on the end buffer impact force history of the crane (see page 55), examined the effect of a change in the magnitude of the parameter on ... -
Ethanol production potential from AFEX™ and steam-exploded sugarcane residues for sugarcane biorefineries
(BioMed Central, 2018-05-04)Background: Expanding biofuel markets are challenged by the need to meet future biofuel demands and mitigate greenhouse gas emissions, while using domestically available feedstock sustainably. In the context of the ... -
Expanding the semantic range to enable meaningful real-world application in chemical engineering
(HESA, 2019)ENGLISH ABSTRACT: Legitimation Code Theory has proven to be useful in analysing the relationship between theory and practice. Semantic gravity can be used to illustrate teaching and learning processes that move between ... -
Frequency sensitive mechanism in low-intensity ultrasound enhanced bioeffects
(Public Library of Science, 2017)This study presents two novel theoretical models to elucidate frequency sensitive nuclear mechanisms in low-intensity ultrasound enhanced bioeffects. In contrast to the typical 1.5 MHz pulsed ultrasound regime, our group ... -
Hydrodynamics of a packed column operated under supercritical conditions
(AIDIC, 2018)ENGLISH ABSTRACT: There is a lack of hydrodynamic data under supercritical conditions, in particular in systems that attempt to isolate hydrodynamics from mass transfer. This paper presents hydrodynamic data focusing on ... -
Impact of cultivar selection and process optimization on ethanol yield from different varieties of sugarcane
(BioMed Central, 2014-04)Background: The development of ‘energycane’ varieties of sugarcane is underway, targeting the use of both sugar juice and bagasse for ethanol production. The current study evaluated a selection of such ‘energycane’ cultivars ... -
Incorporating anaerobic co-digestion of steam exploded or ammonia fiber expansion pretreated sugarcane residues with manure into a sugarcanebased bioenergy-livestock nexus
(Elsevier, 2019)ENGLISH ABSTRACT: The co-digestion of pretreated sugarcane lignocelluloses with dairy cow manure (DCM) as a bioenergy production and waste management strategy, for intensive livestock farms located in sugarcane regions, ... -
Investigating the behaviour of PGEs during first-stage leaching of a Ni-Fe-Cu-S converter matte
(Southern African Institute of Mining and Metallurgy, 2018)ENGLISH ABSTRACT: In a first-stage atmospheric leach in a Sherritt Ni-Cu matte leach process, a Ni-Cu-Fe-S Peirce-Smith converter matte is contacted with recycled aqueous copper sulphate/sulphuric acid solution (spent ...
