Tirivaviri Augustine Mamvura

Scopus Publications

Recovery and purification of graphite from spent lithium-ion batteries through flotation and subsequent leaching
Wayne Chikwane, Tirivaviri Mamvura, Gwiranai Danha, Tumeletso Lekgoba, Babatunde Obadele, et al.
Next Energy, 2026
The significance of coal ball milling model equations in manufacturing industries
G. Gaesenngwe, G. Danha, P.V.S Raghupatruni, T.A. Mamvura
International Journal of Coal Preparation and Utilization, 2026
Assessing the viability of magnetic separator tailings as a secondary source of nickel, cobalt and copper: a case study for Tati Nickel Mining Company
Nkosilamandla Moyo, Boitshepo Marakalala, Tshepo Gaogane, Gwiranai Danha, Tirivaviri A. Mamvura
Journal of Engineering and Applied Science, 2025
To date, the recovery of nickel and cobalt sulphide minerals from low-grade ores poses significant challenges in mineral processing due to their complex nature. With the decline of rich ore bodies, a paradigm shift to low-grade ores and secondary sources exists for these critical metals, particularly in the renewable energy sector, i.e. storage batteries. This study explores the potential consideration of the magnetic separator tailings obtained from Tati Nickel Mining Company in Botswana as a lucrative base metal secondary resource for the recovery of nickel, cobalt and copper. It becomes a dual approach to obtain valuable base metals while economically handling the waste material to ease the environmental challenges it was posing to the mine and the community. Characterisation of the samples obtained through crystallographic analysis, mineralogy and mapping, and elemental analysis showed the presence of nickel and copper minerals to a degree by which they can be economically extracted through hydrometallurgical means. Cobalt concentration in the sample was in trace amounts as it could only be detectable through the destructive technique. Concentration through froth flotation was conducted post characterisation, with emphasis on flotation time. The optimum flotation time was determined to be 3 minutes, giving metal recoveries of 15.56%, 27.40% and 52% for cobalt, nickel and copper respectively, with an enrichment ratio of 7.39 for copper. However, the yield obtained was 7.04% highlighting the ineffectiveness of the traditional concentration route previously practised in the mine. It was recommended therefore to re-design the flotation process and tailor it for the magnetic separator tailings, concentrating on the effects of pH and particle size distribution primarily, before the other factors, e.g. collectors, modifiers, etc. In conclusion, it was noted that the recovery of nickel, copper and the by-product iron was feasible; therefore, a recommendation was made to apply the Activox technology.
Pressurized torrefaction of waste biomass to improve bio coal quality: Synergistic effect between animal waste and wood chips
N.M. Tshuma, L.B. Moyo, G. Danha, T.A. Mamvura, G.S. Simate, et al.
Cleaner Chemical Engineering, 2025
Modelling and optimization of ultra-fine copper sulphide grinding: A hybrid statistical and machine learning approach
Nkosilamandla Moyo, Tirivaviri Mamvura, Gwiranai Danha, Prasad Raghupatruni
Particuology, 2025
Coal-based reduction roasting and magnetic separation of low-grade Botswana iron ore for sustainable beneficiation
Mompati Mpho Bulayani, Prasad Raghupatruni, Tirivaviri Mamvura, Gwiranai Danha
Minerals Engineering, 2025
Prediction of coal ball-mil product stream cost(s) using particle size distribution data
G. Gaesenngwe, G. Danha, P. V. S. Raghupatruni, T. A. Mamvura
International Journal of Coal Preparation and Utilization, 2025
Exploring Low-Grade Iron Ore Beneficiation Techniques: A Comprehensive Review
Mompati Mpho Bulayani, Prasad Raghupatruni, T. Mamvura, G. Danha
Minerals, 2024
The beneficiation of low-grade iron ores is a key research and development topic in the mineral processing industry. The gradual exhaustion of high-grade iron ore reserves, and rising consumer iron and steel demand globally necessitate efficient low-quality iron ore beneficiation to meet steelmaking quality requirements. This comprehensive review explores various beneficiation techniques for low-quality iron ore, focusing on conventional methods including comminution, froth flotation and gravity separation. This article discusses the principles, processes, and equipment used in these techniques and highlights recent advancements and research efforts in the field. This review also emphasizes the importance of effective beneficiation processes in enhancing economic viability, sustainable resource management, and environmental conservation. Furthermore, it presents a case study of iron ore deposits in Botswana, highlighting the potential economic growth and sustainable development that can be achieved by maximizing resource utilization through reductive roasting, followed by magnetic separation of iron ore using semi-bituminous coal as a reductant. Overall, this review provides valuable insights into low-grade iron ore beneficiation techniques and their significance in meeting the growing demand for high-quality iron and steel products.
Reclamation of iron and copper from BCL slag in Botswana
T.S Gabasiane, G. Danha, T. Mashifana, T. Mamvura
Heliyon, 2024
A review of the combined torrefaction and densification technology as a source of renewable energy
Thandiwe Sithole, Godwell Pahla, Tebogo Mashifana, Tirivaviri Mamvura, Elena-Niculina Dragoi, et al.
Alexandria Engineering Journal, 2023
Recovering phosphorus as struvite from anaerobic digestate of pig manure with ferrochrome slag as a magnesium source
L.B. Moyo, G.S. Simate, T.A. Mamvura, G. Danha
Heliyon, 2023
Application of Attainable Region Technique to Optimize Copper Slag’s Desired Size Class
Tlotlo Solomon Gabasiane, Gwiranai Danha, Tirivaviri Mamvura, Tebogo Mashifana, Vusumuzi Sibanda
Minerals, 2023
Magnesium recovery from ferrochrome slag: kinetics and possible use in a circular economy
L.B. Moyo, G.S. Simate, T.A. Mamvura
Heliyon, 2022
Overview of Torrefaction Technologies: A Path Getaway for Waste-to-Energy
Tirivaviri A. Mamvura
Handbook of Waste Biorefinery Circular Economy of Renewable Energy, 2022
Selective flocculation and recovery of chrome from plant slimes using starch and sodium oleate as flocculants
V. Sibanda, LehAnA MAkARA, LeRATO SeBOSe, ThULAgAnyO SeTIMO, T. Mamvura, et al.
Gospodarka Surowcami Mineralnymi Mineral Resources Management, 2022
Environmental and socioeconomic impact of copper slag—A review
Tlotlo Solomon Gabasiane, Gwiranai Danha, Tirivaviri A. Mamvura, Tebogo Mashifana, Godfrey Dzinomwa
Crystals, 2021
A comparative study on the comminution behavior of diorite rocks
Gaesenngwe Gaesenngwe, Tirivaviri Mamvura, Gwiranai Danha, Vusumuzi Sibanda
Heliyon, 2021
Characterization of copper slag for beneficiation of iron and copper
T.S. Gabasiane, G. Danha, T.A. Mamvura, T. Mashifana, G. Dzinomwa
Heliyon, 2021
Investigating the effect of lip froth washing on coal yield during flotation of a high ash South African coal
Cherryl du Plessis, Vusumuzi Sibanda, Marek Dworzanowski, Gwiranai Danha, Tirivaviri Mamvura
Physicochemical Problems of Mineral Processing, 2021
Adsorption of lead ions from wastewater using nano silica spheres synthesized on calcium carbonate templates
Milton Manyangadze, Nyaradzai M.H. Chikuruwo, T. Bala Narsaiah, Ch. Shilpa Chakra, Gratitude Charis, et al.
Heliyon, 2020
Integrated and consolidated review of plastic waste management and bio-based biodegradable plastics: Challenges and opportunities
Zvanaka S. Mazhandu, Edison Muzenda, Tirivaviri A. Mamvura, Mohamed Belaid, Trust Nhubu
Sustainability Switzerland, 2020
Optimisation of using a blend of plant based natural and synthetic coagulants for water treatment: (Moringa Oleifera-Cactus Opuntia-alum blend)
B.I. Gandiwa, L.B. Moyo, S. Ncube, T.A. Mamvura, L.L. Mguni, et al.
South African Journal of Chemical Engineering, 2020
The development of a waste tyre pyrolysis production plant business model for the gauteng region, South Africa
Nhlanhla Nkosi, Edison Muzenda, Tirivaviri A. Mamvura, Mohamed Belaid, Bilal Patel
Processes, 2020
Production of modified bitumen from used engine oil, coal tar and waste tyre for construction applications
Nyaradzo Kamoto, Joseph Govha, Gwiranai Danha, Tirivaviri Mamvura, Edison Muzenda
South African Journal of Chemical Engineering, 2020
Optimization of pulp production from groundnut shells using chemical pulping at low temperatures
P. Musekiwa, L.B. Moyo, T.A. Mamvura, G. Danha, G.S. Simate, et al.
Heliyon, 2020
Biomass torrefaction as an emerging technology to aid in energy production
T.A. Mamvura, G. Danha
Heliyon, 2020
Enhancing the flotation recovery of copper minerals in smelter slags from Namibia prior to disposal
V. Sibanda, E. Sipunga, G. Danha, T.A. Mamvura
Heliyon, 2020
Characterization of botswana coal from two coal fields: Mabesekwa and mmamabula to determine its coal rank
Mmoloki Makoba, Taboka Moalosi, Paul S. Agachi, Edison Muzenda, Tirivaviri A. Mamvura, et al.
Studia Universitatis Babes Bolyai Chemia, 2020
Production of activated carbon from poultry feathers for waste water treatment
Rue Chiramba, Gratitude Charis, Nonhlanhla Fungura, Gwiranai Danha, Tirivaviri Mamvura
Water Science and Technology, 2019
The potential application of graphene nanotechnology for renewable energy systems
Tirivaviri A. Mamvura, Geoffrey S. Simate
Graphene Based Nanotechnologies for Energy and Environmental Applications, 2019
Energy changes during use of high-power ultrasound on food grade surfaces
Tirivaviri A. Mamvura, Sunny E. Iyuke, Anthony E. Paterson
South African Journal of Chemical Engineering, 2018
Torrefaction of waste biomass for application in energy production in South Africa
T.A. Mamvura, G. Pahla, E. Muzenda
South African Journal of Chemical Engineering, 2018
Energy densification of animal waste lignocellulose biomass and raw biomass
G. Pahla, T.A. Mamvura, F. Ntuli, E. Muzenda
South African Journal of Chemical Engineering, 2017
The impact of pipe geometry variations on hygiene and success of orbital welding of brewing industry equipment
T. A. Mamvura, A. E. Paterson, D. Fanucchi
Journal of the Institute of Brewing, 2017
Investigation on the effect of ultrasound waves on stainless steel surfaces during removal of soil films
Advances in Environmental Biology, 2014
Immobilisation of yeast cells on carbon nanotubes
Tirivaviri A. Mamvura, Sunny E. Iyuke, Vusumuzi Sibanda, Clarence S. Yah
South African Journal of Science, 2012
Soil films in the beverage industry: A review
T. A. Mamvura, S. E. Iyuke, J. D. Cluett, A. E. Paterson
Journal of the Institute of Brewing, 2011
Process synthesis and optimization for the production of carbon nanostructures
S E Iyuke, T A Mamvura, K Liu, V Sibanda, M Meyyappan, et al.
Nanotechnology, 2009

Tirivaviri Augustine Mamvura

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Scopus Publications