Research Articles (Process Engineering)
Recent Submissions
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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 ... -
Numerical and physical modelling of tundish slag entrainment in the steelmaking process
(The Southern African Institute of Mining and Metallurgy, 2017-05)ENGLISH ABSTRACT: Physical and numerical modelling methods were followed to identify mechanism(s) for tundish slag entrainment in a bare tundish and one with a flow control device (FCD). The physical and numerical models ... -
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 ... -
A potential source of undiagnosed Legionellosis : Legionella growth in domestic water heating systems in South Africa
(Elsevier, 2018-12-02)ENGLISH ABSTRACT: Legionella is a genus of pathogenic bacterial mesophiles that cause a range of diseases collectively referred to as Legionellosis, with immunocompromised individuals being particularly susceptible. Water ... -
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) ... -
Solvent extraction of polyphenolics from the indigenous African fruit ximenia caffra and characterization by LC-HRMS
(MDPI, 2018)Indigenous and non-commercial fruits can be an important source of antioxidant polyphenols; however, the identity and content of polyphenols from non-commercial fruits are often poorly described. The study aimed to ... -
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 ... -
Mining-Related Selenium Contamination in Alaska, and the State of Current Knowledge
(MDPI, 2017)ENGLISH ABSTRACT: Selenium pollution has been a topic of extensive research dating back further than the last decade and has attracted significant attention from several environmental and regulatory agencies in order to ... -
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 ... -
Post-treatment of distillery wastewater after UASB using aerobic techniques
(South African Society for Enology and Viticulture, 2007)The treatment of high-strength wastewater from a distillery using grape-based feedstock was conducted through sequencing the upflow anaerobic sludge blanket (UASB) reactor and the aerobically-activated sludge reactors. The ... -
Multi-product biorefineries from lignocelluloses : a pathway to revitalisation of the sugar industry?
(BioMed Central, 2017-04-11)Background Driven by a range of sustainability challenges, e.g. climate change, resource depletion and expanding populations, a circular bioeconomy is emerging and expected to evolve progressively in the coming decades. ... -
Techno-economic comparison of ethanol and electricity coproduction schemes from sugarcane residues at existing sugar mills in Southern Africa
(BioMed Central, 2014-07)Background: The economics of producing only electricity from residues, which comprise of surplus bagasse and 50% post-harvest residues, at an existing sugar mill in South Africa was compared to the coproduction of ... -
Sonic injection into a PGM Peirce-Smith converter : CFD modelling and industrial trials
(The Southern African Institute of Mining and Metallurgy, 2015)ENGLISH ABSTRACT: Peirce-Smith converters (PSCs) are extensively used in the copper, nickel, and platinum group metals industries. The typical converting operation involves lateral purging of air into molten matte through ... -
Physical and numerical modelling of a four-strand steelmaking tundish using flow analysis of different configurations
(The Southern African Institute of Mining and Metallurgy, 2015)ENGLISH ABSTRACT: Modern tundishes have evolved as vessels to serve as the final step in refining of molten steel by removing inclusions and promoting thermochemical homogeneity. In this study the flow behaviour in a ... -
The recovery of platinum group metals from low-grade concentrates to an iron alloy using silicon carbide as reductant
(The Southern African Institute of Mining and Metallurgy, 2015)The purpose of the study was to investigate the feasibility of SiC reduction of low-grade concentrates from Lonmin’s Rowland and Easterns operations with respect to metal fall and PGM recovery. These concentrates are rich ... -
Modelling of fluid flow phenomena in Peirce-Smith copper converters and analysis of combined blowing concept
(The Southern African Institute of Mining and Metallurgy, 2015)ENGLISH ABSTRACT: This investigation consists of a numerical and physical modelling exercise on flow patterns, mixing, solid-liquid mass transfer, and slag-matte phase distribution in a 0.2-scale cold model of an industrial ... -
Rice straw hydrolysate to fuel and volatile fatty acid conversion by Clostridium sporogenes BE01 : bio-electrochemical analysis of the electron transport mediators involved
(Royal Society of Chemistry, 2015-03-18)ENGLISH ABSTRACT: Clostridium sporogenes BE01, a non-acetone forming butanol producer, can produce hydrogen and volatile fatty acids (VFAs) during butanol fermentation from rice straw hydrolysate. Bio-electrochemical ... -
Techno-economics of integrating bioethanol production from spent sulfite liquor for reduction of greenhouse gas emissions from sulfite pulping mills
(BioMed Central, 2014-12)Background Flow sheet options for integrating ethanol production from spent sulfite liquor (SSL) into the acid-based sulfite pulping process at the Sappi Saiccor mill (Umkomaas, South Africa) were investigated, including ... -
Market dynamics as a driver towards the evolution of research needs : the case of up-flow anaerobic sludge blanket seeding granules
(Water Research Commission, 2013-01)Market dynamics offer positive (incentive) or negative (disincentive) feedback loops that shape the research needs for, or certain aspects of, a particular technology. Our case study results illustrate how market dynamics ... -
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 ...
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