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Browsing Faculty of Engineering & Technology by Title

Browsing Faculty of Engineering & Technology by Title

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  • Optical properties of bimetallic (SrO-K2O) nanofillers 
    Ayeleru, Olusola Olaitan; Dlova, Sisanda; Ntuli, Freeman; Kupolati, Williams Kehinde; Olubambi, Peter Apata (Elsevier B.V., 2019-04)
    In this study, bimetallic nanofiller capable of usage as reinforcement was synthesized from expanded polystyrene (EPS). Bimetallic materials consist of two different metals. The bimetallic nanofiller consisting of SrO and ...
  • Optimisation of using a blend of plant based natural and synthetic coagulants for water treatment: (Moringa Oleifera-Cactus Opuntia-alum blend) 
    Gandiwa, Bruce I.; Moyo, Langa Bright; Ncube, Sokesimbone; Mamvura, Tirivaviri Augustine; Mguni, Liberty Lungisani; Hlabangana, Nkosikhona (Elsevier B.V., 2020-10)
    The research presents a comparative study on the effectiveness of blending plant based natural coagulants (Cactus Opuntia and Moringa Oleifera extracts) and a synthetic coagulant (aluminium sulphate or alum) in treatment ...
  • Optimizing yield and quality of bio-oil: a comparative study of Acacia tortilis and Pine dust 
    Charis, Gratitude; Danha, Gwiranai; Muzenda, Edison (MDPI (Basel, Switzerland), 2020-05)
    We collected pine dust and Acacia tortilis samples from Zimbabwe and Botswana, respectively. We then pyrolyzed them in a bench-scale plant under varying conditions. This investigation aimed to determine an optimum ...
  • Orbital controls on eastern African hydroclimate in the Pleistocene 
    Lupien, Rachel L; Russell, James M; Pearson, Emma J; Castañeda, Isla S; Asrat, Asfawossen; Foerster, Verena; Lamb, Henry F; Roberts, Helen M; Schäbitz, Frank; Trauth, Martin H; Beck, Catherine C; Feibel, Craig S; Cohen, Andrew S (Springer Nature Limited, 2022-02-24)
    Understanding eastern African paleoclimate is critical for contextualizing early human evolution, adaptation, and dispersal, yet Pleistocene climate of this region and its governing mechanisms remain poorly understood due ...
  • An overview of plastic waste generation and management in food packaging industries 
    Ncube, Lindani Koketso; Ude, Albert Uchenna; Ogunmuyiwa, Enoch Nfise; Zulkifli, Rozli; Beas, Isaac Nongwe (MDPI (Basel.Switzerland), 2021-02-12)
    Over the years, the world was not paying strict attention to the impact of rapid growth in plastic use. This has led to unprecedented amounts of mixed types of plastic waste entering the environment unmanaged. Packaging ...
  • Performance evaluation of waste stabilisation ponds 
    Gopolang, Obenne Pearl; Letshwenyo, Moatlhodi Wise (Scientific Research Publishing Inc., 2018-11)
    Waste stabilisation pond system has been used more especially in developing countries for sewage treatment. The objective of this study was to investigate the hydraulic and performance efficiency of Palapye waste stabilisation ...
  • Phosphorus removal from secondary wastewater effluent using copper smelter slag 
    Letshwenyo, Moatlhodi Wise; Sima, Thandie Veronicah (Elsevier B.V., 2020-06)
    This study investigated the use of copper smelter slag for the removal of phosphorus from secondary wastewater effluent through batch tests. The media was physically and chemically characterized and showed presence of Fe2O3 ...
  • A phytolith supported biosphere-hydrosphere predictive model for southern Ethiopia: insights into paleoenvironmental changes and human landscape preferences since the last glacial maximum 
    Fischer, Markus L.; Bachofer, Felix; Yost, Chad L.; Bludau, Ines J. E.; Schepers, Christian; Foerster, Verena; Lamb, Henry; Schäbitz, Frank; Asrat, Asfawossen; Trauth, Martin H.; Junginger, Annett (MDPI, 2021-10-08)
    During the past 25 ka, southern Ethiopia has undergone tremendous climatic changes, from dry and relatively cold during the Last Glacial Maximum (LGM, 25–18 ka) to the African Humid Period (AHP, 15–5 ka), and back to ...
  • The potency of monoethanolamine in biogas purification and upgrading 
    Maile, Olivia Ireen; Tesfagiorgis, Habtom; Muzenda, Edison (Institution of Chemical Engineers ,Published by Elsevier, 2017-12)
    Biogas has been exploited as one of the alternative sources of renewable energy having the potential to replace fossil fuels. It contains impurities when raw, as it consists of 50e70% methane (CH4), 30e50% carbon dioxide ...
  • Potential for treating sewage wastewater using sewage sludge biochar 
    Manyuchi, Musaida Mercy; Mbohwa, Charles; Muzenda, Edison (Covenant Journal of Physical and Life Sciences, 2018-03)
    In this study, activated biochar from municipal sewage sludge was used for the treatment of sewage water. The sewage physicochemical parameters were measured before and after bio filtration with biochar applying the principle ...
  • Power quality improvement in solar fed cascaded multilevel inverter with output voltage regulation techniques 
    Stonier, Albert Alexander; Murugesan, Srinivasan; Samikannu, Ravi; Venkatachary, Sampath Kumar; Kumar, Senthil S.; Arumugam, Prakash (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-29)
    The presence of harmonics in solar Photo Voltaic (PV) energy conversion system results in deterioration of power quality. To address such issue, this paper aims to investigate the elimination of harmonics in a solar fed ...
  • Prediction of genes that function in methanogenesis and CO2 pathways in extremophiles 
    Tilahun, Lulit; Asrat, Asfawossen; Wessel, Gary M.; Simachew, Addis (MDPI, 2021-10-24)
    Gaet’ale (GAL) and Mud’ara (MUP) are two hypersaline ponds located in the Danakil Depression recharged by underground water from the surrounding highlands. These two ponds have different pH, salinity, and show variation ...
  • A preliminary application of a machine learning model for the prediction of the load variation in three-point bending tests based on acoustic emission signals 
    Kaklis, Kostas; Saubi, Onalethata; Jamisola, Rodrigo S; Agioutantis, Zach G (Elsevier B.V., 2021)
    The load variation during three-point bending (TPB) tests on prismatic Nestos (Greece) marble specimens instrumented by piezoelectric sensors is predicted using acoustic emission (AE) signals. The slope of the cumulative ...
  • Processing and characterization of chalcopyrite (CuFeS2) sample from Botswana 
    Poloko, Nenguba; Danha, Gwiranai; Gaogane, Tshepho (Elsevier B.V., 2019)
    Beneficiation of chalcopyrite and most minerals in general requires specific conditions and raw materials based on characteristics of the mineral to optimize processing hence income. Therefore characterization of minerals ...
  • Production of activated carbon from poultry feathers for waste water treatment 
    Chiramba, Rue; Charis, Gratitude; Fungura, Nonhlanhla; Danha, Gwiranai; Mamvura, Tirivaviri Augustine (IWA Publishing, 2019)
    Contamination of water bodies by heavy metal ions is a challenge many developing nations like Zimbabwe face, with negative environmental and socio-economic repercussions. Treating affected bodies usually requires a costly ...
  • Review of dual axis solar tracking and development of its functional model 
    Mpodi, Emmanuel Karabo; Tjiparuro, Zeundjua; Matsebe, Oduetse (Elsevier B.V., 2019)
    The use of solar energy is in the upswing due to its environmental friendliness and abundance. That notwithstanding, efficiency remains a major problem in many of the applications. Mitigation is normally in the form of ...
  • A review of ironmaking by direct reduction processes: quality requirements and sustainability 
    Ramakgala, Comfort; Danha, Gwiranai (Elsevier B.V., 2019)
    Currently the majority of the world’s steel is produced through either one of the two main routes; the integrated Blast Furnace – Basic Oxygen Furnace (BF – BOF) route or the Direct Reduced Iron - Electric Arc Furnace (DRI ...
  • A review of the desulphurization methods used for pyrolysis oil 
    Serefentse, Ratanang; Ruwona, Wiseman; Danha, Gwiranai; Muzenda, Edison (Elsevier B.V., 2019)
    In this article we review the different methods that are used for the desulphurization of pyrolysis oil obtained from used tyres. A lot of research has been done on desulphurization of crude oil and its derivatives, mostly ...
  • A review of timber waste utilization: challenges and opportunities in Zimbabwe 
    Charis, Gratitude; Danha, Gwiranai; Muzenda, Edison (Elsevier B.V., 2019)
    This paper is a case study review of the timber waste problem and solutions that have been proffered in the Manicaland region of Zimbabwe. The study was conducted through primary data collected during site visits and a ...
  • A review on Botswana coal potential from a pyrolysis and gasification perspective 
    Makoba, Mmoloki; Botha, Daniel Erich; Rapoo, Mpho Thabang; Szabó, László Zsolt; Shomana, Thapelo; Agachi, Paul Serban; Muzenda, Edison (Faculty of Chemical Technology and Biotechnology of the Budapest University of Technology and Economics., 2021)
    Coal pyrolysis and gasification are promising options for the future of Botswana as the country has large coal reserves with severe limitations in terms of export options. Coal characterization facilities will be required ...

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