David Chepkonga | Thermal and Metallurgical Processes | Innovative Research Award

Published on by Metallurgical Engineering

Innovative Research Award

David Chepkonga
Jomo Kenyatta University of Agriculture and Technology, Kenya
David Chepkonga
Affiliation Jomo Kenyatta University of Agriculture and Technology
Country Kenya
Scopus ID 59419267100
Documents 3
Citations 4
h-index 1
Subject Area Thermal and Metallurgical Processes
Event Metallurgical Engineering Awards
ORCID 0000-0002-2180-1718

David Chepkonga is a Kenyan scholar in applied and computational mathematics whose academic work has contributed to the advancement of numerical modelling, heat transfer analysis, fluid dynamics, and computational simulation. His interdisciplinary research profile combines mathematical theory with engineering-oriented applications relevant to thermal and metallurgical processes.[1] Through scholarly publications, conference participation, and university teaching, he has demonstrated a commitment to analytical research and academic development in East Africa and beyond.[2]

Abstract

David Chepkonga and his contributions to applied mathematics, computational modelling, and engineering-oriented scientific research. His academic activities include numerical analysis, magnetohydrodynamic flow studies, thermal systems simulation, and epidemic modelling.[3] Through publications in peer-reviewed journals and participation in international conferences, Chepkonga has contributed to research areas connected to thermal sciences and metallurgical engineering applications. His research profile reflects an emphasis on analytical rigor, interdisciplinary collaboration, and mathematical approaches to industrial and environmental challenges.[4]

Keywords

Applied Mathematics, Thermal Engineering, Metallurgical Processes, Computational Modelling, Fluid Dynamics, Heat Transfer, Numerical Analysis, Magnetohydrodynamics, Scientific Simulation, Engineering Research

Introduction

David Chepkonga working in this field often apply numerical techniques and mathematical simulations to understand heat transfer, fluid flow, and material behaviour under complex operating conditions. David Chepkonga has developed a research portfolio aligned with these objectives through studies involving nanofluid dynamics, magnetic field interactions, and predictive modelling systems.[2]

His academic work is associated with Jomo Kenyatta University of Agriculture and Technology in Kenya, where he completed advanced studies in applied mathematics and computational sciences. In addition to research, he has contributed to university teaching, supervision, curriculum development, and scholarly mentorship across multiple institutions.[1]

Research Profile

Chepkonga’s research profile focuses on computational fluid dynamics, thermal modelling, and engineering mathematics. His studies examine the interaction between magnetic fields, viscous flow systems, and heat transfer processes relevant to industrial and metallurgical applications.[3] His technical expertise includes MATLAB simulation, numerical analysis, and mathematical modelling techniques applied to engineering and environmental systems.

Research Contributions

A major component of Chepkonga’s work involves analysing thermal transport phenomena through computational approaches. His studies on gyro-tactic hybrid nanofluids and porous convergent pipe systems provide mathematical insight into complex flow behaviours and thermal conductivity patterns.[3] He has also contributed to mathematical epidemiology through research on disease transmission dynamics, including SIR-based modelling frameworks for Monkeypox and other infectious diseases. These studies illustrate the adaptability of mathematical methods across engineering and biomedical domains.[4]

Publications

  • Spectral Relaxation Analysis of Rotating Magnetohydrodynamic Viscous Flow and Heat Transfer Past a Stretching Sheet, Results in Engineering, 2026.
  • Modelling Heat and Mass Transfer in Gyro-tactic Hybrid Nanofluid Flow Through a Converging Pipe, International Journal of Ambient Energy, 2025.
  • Numerical Study of Multiphase Hybrid Gyro-tactic Nanofluid Flow Through Porous Convergent Pipe, Engineering Letters, 2025.

Research Impact

David Chepkonga’s studies combine mathematics, engineering analysis, and simulation techniques to address scientific questions relevant to industrial systems and emerging technological challenges.[5] His publications contribute to growing academic discussions in thermal sciences, metallurgical engineering processes, computational mathematics, and applied modelling. Participation in international conferences and academic workshops has also strengthened collaboration opportunities and research dissemination within the African scientific community.[2]

Award Suitability

David Chepkonga’s academic background and publication record support his suitability for recognition through the Innovative Research Award. His work demonstrates interdisciplinary integration between mathematics and engineering sciences, particularly in computational heat transfer and flow analysis.[3] The combination of research productivity, university-level teaching experience, conference engagement, and collaborative scholarly participation indicates sustained academic involvement.[4]

Conclusion

David Chepkonga represents a growing generation of African researchers contributing to computational mathematics and engineering analysis through applied scientific investigation. His research activities, publication portfolio, and commitment to higher education demonstrate continued engagement with interdisciplinary academic advancement. The Innovative Research Award recognizes scholarly contributions that support analytical problem-solving, engineering innovation, and scientific development within the broader academic and industrial community.

References

  1. Elsevier. (n.d.). Scopus author details: David Chepkonga, Author ID 59419267100. Scopus.
    https://www.scopus.com/authid/detail.uri?authorId=59419267100
  2. Chepkonga, D. (2019). Fluid flow and heat transfer through a vertical cylindrical collapsible tube in the presence of magnetic field and an obstacle. International Journal of Advances in Applied Mathematics and Mechanics
    web.archive.org
  3. Chepkonga, D. (2024). Modeling the spread of Mpox viral disease in African countries using a Bayesian hierarchical model. Commun. Math. Biol. Neurosci..
    https://scik.org/index.php/cmbn/article/view/8890
  4. Chepkonga, D. (2025). Optimizing Control Measures for a Vector-Host Epidemic Model: A Mathematical Analysis. Earth 
    https://www.researchgate.net/
  5. Chepkonga, D. (2024). Heat Transfer on a Non-Newtonian Hydromagnetic Fluid Flow through a Convergent Conduit with Chemical Reaction and Soret Effects.
    https://ijaamm.com/uploads/2/1/4/8/21481830/v12n1p6_57-69.pdf

Willie Nheta | Mineral Processing | Innovative Research Award

Published on by Metallurgical Engineering

Innovative Research Award

Willie Nheta
University of Johannesburg, South Africa
Willie Nheta
Affiliation University of Johannesburg
Country South Africa
Scopus ID 56195710700
Documents 61
Citations 301
h-index 6
Subject Area Mineral Processing
Event Metallurgical Engineering Awards
ORCID 0000-0002-7621-1379

Willie Nheta in the field of mineral processing and metallurgical engineering of Innovative Research Award recognizes the scholarly and technical contributions. His academic activities at the University of Johannesburg encompass research supervision, flotation technology, hydrometallurgy, extractive metallurgy, and process optimization within mineral beneficiation systems. His work has contributed to ongoing developments in sustainable metallurgical processing methodologies and advanced mineral recovery systems.[1]

Abstract

Willie Nheta is a metallurgical engineering academic whose work primarily focuses on mineral processing, froth flotation systems, hydrometallurgy, and sustainable beneficiation technologies. His research includes optimization of flotation parameters, recovery of platinum group metals, treatment of low-grade ores, recovery from mine tailings, and advanced extractive metallurgy methods. Through peer-reviewed publications, postgraduate supervision, and collaborative industrial research, he has contributed to developments in process efficiency and environmentally responsive mineral engineering approaches.[2]

Keywords

Mineral Processing, Froth Flotation, Hydrometallurgy, Metallurgical Engineering, Platinum Group Metals, Sustainable Beneficiation, Response Surface Methodology, Tailings Recovery, Ore Characterization, Process Optimization.

Introduction

The discipline of metallurgical engineering plays a critical role in modern mineral extraction, sustainable resource utilization, and industrial process innovation. Within this context, Willie Nheta has developed a research portfolio centered on flotation technology, hydrometallurgical recovery, and beneficiation of complex ores. His academic contributions at the University of Johannesburg reflect ongoing engagement with mineral recovery systems relevant to platinum group metals, nickel, iron ore, chromite, and base metal processing.[3]

His scholarly work integrates laboratory experimentation, process modeling, response surface methodology, and industrially applicable optimization strategies. These investigations contribute to understanding mineral liberation, flotation reagent interactions, and environmentally conscious extraction systems for low-grade and oxidized ores.[4]

Research Profile

Willie Nheta serves as Associate Professor and Mineral Processing Laboratory Manager at the University of Johannesburg. His educational background includes postgraduate studies in extraction metallurgy and non-ferrous metallurgy with specialization in precious metal smelting technologies. His professional and academic experience includes plant metallurgy operations, mineral processing research, and university-level supervision and instruction.[1]

  • Research specialization in mineral processing and hydrometallurgy.
  • Extensive supervision of postgraduate students in metallurgical engineering.
  • Laboratory management involving flotation and beneficiation systems.
  • Research collaboration on platinum group metals and base metal extraction.
  • Publication contributions in peer-reviewed journals and conferences.

Research Contributions

Willie Nheta’s research activities emphasize flotation optimization, recovery of valuable minerals from tailings, and development of sustainable beneficiation approaches. His investigations into oxidized platinum group metal ores, flotation chemistry, and low-grade ore processing have supported advancements in metallurgical process understanding.[5]

A significant aspect of his work involves the application of response surface methodology and central composite design for process optimization in flotation systems. These studies contribute to improved mineral recovery performance and operational efficiency in mineral processing operations.[6]

  • Optimization of chromite and platinum group metal flotation systems.
  • Development of beneficiation methodologies for low-grade ores.
  • Research on sustainable extraction and tailings valorization.
  • Application of nano-engineered adsorbents for selective metal extraction.
  • Studies on flotation reagent interactions and mineral surface chemistry.

Publications

Willie Nheta includes journal articles, conference proceedings, and book chapters covering flotation science, hydrometallurgy, mineral beneficiation, and sustainable processing technologies. Selected scholarly works include:

  1. Optimization of Reverse Cationic Flotation of Low-Grade Iron Oxide from Fluorspar Tails Using Taguchi Method.
  2. Application of Response Surface Methodology on the Optimization of Chromite Recovery from South African Middle Group Chromite Seams.
  3. Pretreatment and Recovery of Base Metals from Oxidised Ores by Froth Flotation Technology.
  4. Exploring the Characterization, Liberation and Flotation Response of a Nigerian Low-Grade Copper Ore.
  5. Beneficiation of Low-Grade Iron Plant Tailings Through Magnetization Roasting Using Macadamia Nutshell Reductant.

Several publications include studies on flotation kinetics, thermochemical reduction processes, and beneficiation of platinum-bearing materials. These contributions reflect interdisciplinary applications of metallurgy, process engineering, and mineral economics.[2]

Research Impact

Willie Nheta demonstrates measurable academic and industrial relevance through peer-reviewed publications, citation metrics, postgraduate supervision, and externally funded research activities. His supervision portfolio includes numerous completed master’s and doctoral projects related to flotation systems, ore characterization, and sustainable beneficiation technologies.[1]

His studies on flotation optimization, mine sludge processing, and chromite beneficiation contribute to broader discussions on mineral sustainability and resource recovery in the metallurgical engineering sector. Research findings have also supported advancements in process modeling and operational optimization methodologies for industrial mineral processing systems.[5]

Award Suitability

The Innovative Research Award aligns with Willie Nheta’s contributions to metallurgical engineering research, mineral beneficiation technologies, and sustainable extraction systems. His multidisciplinary investigations into flotation science, hydrometallurgical recovery, and process optimization reflect a sustained academic commitment to advancing metallurgical engineering knowledge.[4]

  • Long-term contribution to mineral processing research.
  • Demonstrated supervision and mentorship in postgraduate education.
  • Peer-reviewed scholarly publication record.
  • Industrial relevance in metallurgical process optimization.
  • Contribution to sustainable mineral beneficiation practices.

Conclusion

Willie Nheta’s academic profile reflects active engagement in metallurgical engineering research with emphasis on flotation systems, hydrometallurgy, and sustainable mineral recovery technologies. His combination of industrial experience, academic supervision, publication activity, and applied mineral processing research supports recognition within the field of metallurgical engineering. The Innovative Research Award acknowledges these contributions and their relevance to contemporary mineral beneficiation and extractive metallurgy practices.[6]

References

  1. Elsevier. (n.d.). Scopus author details: Willie Nheta, Author ID 56195710700. Scopus.
    https://www.scopus.com/authid/detail.uri?authorId=56195710700
  2. M Ramudzwagi, N Tshiongo-Makgwe, W Nheta. (2020) Recent developments in beneficiation of fine and ultra-fine coal-review paper.
    https://www.sciencedirect.com/science/article/pii/S0959652620327402
  3. Nheta, W., Lubisi, T.P. and Ntuli, F. (2018). Optimization of Reverse Cationic Flotation of Low-Grade Iron Oxide from Fluorspar Tails Using Taguchi Method. Arabian Journal for Science and Engineering.
    https://link.springer.com/article/10.1007/s13369-017-2703-z
  4. Kaseba, C.N.Y.L. and Nheta, W. (2024). Application of Response Surface Methodology on the Optimization of Chromite Recovery from the South African Middle Group Chromite Seams. Journal of Sustainable Metallurgy.
    https://link.springer.com/article/10.1007/s40831-024-00820-7
  5. Nkosi, N. and Nheta, W. (2024). Pretreatment and recovery of base metals from oxidised ores by froth flotation technology – A review. Minerals Engineering.
    https://doi.org/10.1016/j.mineng.2024.109024
  6. Mpala, T.J., Fosso-Kankeu, E., Maree, J., Masindi, V., Nheta, W., and Mamba, B.B. (2025). Struvite from municipal wastewater applied for the recovery of iron oxide pigments from acid mine drainage: an experimental and geochemical modelling approach. Environmental Earth Sciences.
    https://doi.org/10.1007/s12665-025-12350-w

Zhihe Dou | High-End Metal Materials | Editorial Board Member

Published on by Metallurgical Engineering

Prof. Zhihe Dou | High-End Metal Materials | Editorial Board Member

Dean of School of Metallurgy at Northeastern University | China

Prof. Dou Zhihe demonstrates a distinguished research profile in metallurgical engineering, particularly in high-end metal material preparation, thermodynamic design, and sustainable smelting technologies. His work integrates advanced process metallurgy with innovative material synthesis, contributing to strategic metal resource utilization and high-performance alloy development. With 352 publications, 3,168 citations across 2,333 documents, and an h-index of 28 in Scopus, his academic influence is strong and consistent. This solid research impact and technical expertise make him well-suited for an Editorial Board Member role.

Citation Metrics (Scopus)

3200

1600

800

80

0

Citations
3,168

Documents
352

h-index
28

Featured Publications

Ayesha Tasawar | Hydrometallurgical | Excellence in Research Award

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Mrs. Ayesha Tasawar | Hydrometallurgical | Excellence in Research Award

Scientific Assistant at Institute of Process Metallurgy and Metal Recycling (IME), RWTH Aachen University | Germany

Mrs. Ayesha Tasawar is an emerging researcher in process metallurgy and sustainable materials engineering, with a strong focus on lithium-ion battery recycling and resource recovery. Her research addresses key challenges in circular economy technologies, particularly the hydrometallurgical processing of lithium iron phosphate (LFP) blackmass. She is the lead author of peer-reviewed journal articles in Resources, Conservation and Recycling and Metals, demonstrating original contributions to efficient lithium recovery through oxidative roasting and organic-acid-enabled leaching. Her work combines scientific rigor with industrial relevance, offering environmentally responsible solutions for advanced battery recycling. Scopus profile, 2 publications, emerging citation record, and emerging h-index.

View ORCID Profile

Featured Publications

Qian Li | Minerals Engineering | Pioneer Researcher Award

Published on by Metallurgical Engineering

Prof. Qian Li | Minerals Engineering | Pioneer Researcher Award

Professor at University of South China | China

Prof. Qian Li, a distinguished scholar in biohydrometallurgy at the University of South China, has made exceptional contributions to understanding microbial processes in mineral engineering, particularly uranium bioleaching and residue stabilization. His research integrates microbiological mechanisms with mineral system engineering to address challenges in uranium extraction and environmental remediation. He has directed numerous national and provincial research projects focused on the behavior of iron/sulfur-oxidizing bacterial consortia, in-situ passivation of uranium residues, and eco-friendly leaching technologies. Prof. Li’s innovative studies on biogenic coatings, microbial oxidation, and nanobubble-assisted leaching have introduced new approaches to sustainable metal recovery and waste control. His extensive publication record exceeds 80 research articles in reputed journals including Journal of Hazardous Materials, Frontiers in Microbiology, and Journal of Cleaner Production, showcasing his interdisciplinary expertise and technical leadership. As documented in his Scopus profile, he has accumulated over 4,651 citations, 289 indexed documents, and an h-index of 39, underscoring his scientific impact and recognition within the international minerals engineering community. Through his pioneering work on microbial-mineral interactions, Prof. Li continues to advance the field toward cleaner and more efficient resource utilization, establishing himself as a leading figure in metallurgical and environmental biotechnology.

Profile : Scopus | ORCID | Google Scholar

Featured Publications

Li, S., Xiao, L., Sun, J., Li, Q., Li, G., Cui, Z., Li, T., & Zhou, X. (2025). Biogenic jarosite coating as an innovative passivator for acidic uranium residue stabilization using Acidithiobacillus ferrooxidans. Journal of Hazardous Materials, 471, 140229. DOI: 10.1016/j.jhazmat.2025.140229

Xiao, L., Li, S., Liu, X., Sun, J., Li, G., Cui, Z., Li, T., & Li, Q. (2024). Linked variations of bioleaching performance, extracellular polymeric substances (EPS) and passivation layer in the uranium bacterial-leaching system. Journal of Radioanalytical and Nuclear Chemistry, 334, 637–651. DOI: 10.1007/s10967-024-09851-6

Li, Q., Liu, X., Ma, J., Sun, J., Li, G., Cui, Z., & Li, T. (2023). Bidirectional effects of sulfur-oxidizer Acidithiobacillus thiooxidans in uranium bioleaching systems with or without sulfur by mixed acidophilic bacteria. Journal of Radioanalytical and Nuclear Chemistry, 332, 1787–1794. DOI: 10.1007/s10967-023-08841-4

Sun, J., Ma, J., Li, Q., Li, G., Shi, W., Yang, Y., Hu, P., & Guo, Z. (2022). Role of Fe/S ratios in the enhancement of uranium bioleaching from a complex uranium ore by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans consortium. Journal of Central South University, 29(12), 3858–3869. DOI: 10.1007/s11771-022-5216-1

Yang, Y., Li, Q., Li, G., Ma, J., Sun, J., Liu, X., Cui, Z., & Li, T. (2022). Depth-induced deviation of column bioleaching for uranium embedded in granite porphyry by defined mixed acidophilic bacteria. Journal of Radioanalytical and Nuclear Chemistry, 331, 3681–3692. DOI: 10.1007/s10967-022-08418-7

Chen, Z., Li, Q., Yang, Y., Sun, J., Li, G., Liu, X., Shu, S., Li, X., & Liao, H. (2022). Uranium removal from a radioactive contaminated soil by defined bioleaching bacteria. Journal of Radioanalytical and Nuclear Chemistry, 331, 439–449. DOI: 10.1007/s10967-021-08077-0