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Helen Uchenna Modekwe, PhD
Helen Uchenna Modekwe, PhD
Department of Chemical Engineering, University of Johannesburg, SA
Verified email at uj.ac.za
Title
Cited by
Cited by
Year
Synthesis of bimetallic NiMo/MgO catalyst for catalytic conversion of waste plastics (polypropylene) to carbon nanotubes (CNTs) via chemical vapour deposition method
HU Modekwe, M Mamo, K Moothi, MO Daramola
Materials Today: Proceedings 38, 549-552, 2021
402021
Effect of different catalyst supports on the quality, yield and morphology of carbon nanotubes produced from waste polypropylene plastics
HU Modekwe, MA Mamo, K Moothi, MO Daramola
Catalysts 11 (6), 692, 2021
352021
Adsorbent technologies and applications for carbon capture, and direct air capture in environmental perspective and sustainable climate action
OO Ayeleru, HU Modekwe, OR Onisuru, CR Ohoro, CA Akinnawo, ...
Sustainable Chemistry for Climate Action, 100029, 2023
302023
Catalytic performance of calcium titanate for catalytic decomposition of waste polypropylene to carbon nanotubes in a single-stage CVD reactor
HU Modekwe, MA Mamo, MO Daramola, K Moothi
Catalysts 10 (9), 1030, 2020
152020
Recent advancements in the use of plastics as a carbon source for carbon nanotubes synthesis-A review
HU Modekwe, MO Daramola, MA Mamo, K Moothi
Heliyon 10 (2), E24679, 2024
92024
Remediation of cadmium and chromium using modified Vitex doniana waste plant Seed's biochar in quarry site surface water
EA Anakhu, VI Ameh, HU Modekwe, OO Ayeleru, IM Ramatsa
Environmental Functional Materials 2 (2), 178-188, 2024
82024
Corn cob char as catalyst support for developing carbon nanotubes from waste polypropylene plastics: Comparison of activation techniques
HU Modekwe, K Moothi, MO Daramola, Michael O. and Mamo
Polymers 14 (14), 2898, 2022
72022
Water and wastewater safety plan in sub-Saharan Africa
MA Onu, OO Ayeleru, HU Modekwe, B Oboirien, PA Olubambi
Water, the Environment and the Sustainable Development Goals, 223-240, 2024
52024
The current market for carbon nanotubes materials and products
HU Modekwe, OO Ayeleru, MA Onu, NT Tobias, MA Mamo, K Moothi, ...
Handbook of Carbon Nanotubes, 1-15, 2022
42022
Polypropylene waste-derived carbon nanotubes (CNTs) via single-stage CVD technique: Determination of crystallinity
HU Modekwe, M Mamo, K Moothi, MO Daramola
IOP Conference Series: Materials Science and Engineering 1107 (1), 012067, 2021
32021
Public participation in the implementation of sustainable solid waste management in Soweto, South Africa.
OO Ayeleru, HU Modekwe, FN Okonta, PA Olubambi, F Ntuli
Municipal Solid Waste Management and Improvement Strategies, 2023
22023
Effects of process parameters on biogas production from food waste using aspen plus simulator
AI Adesiyan, OO Ayeleru, HU Modekwe, TT Nyam, VI Ameh, IM Ramatsa
Waste Management Bulletin 2 (3), 289-295, 2024
12024
Effect of purification methods on the quality and morphology of plastic waste-derived carbon nanotubes
H MODEKWE, I RAMATSA
Environmental Research and Technology 7 (1), 2024
12024
The Environmental Fate of E‐waste: Its Impact on Environmental Samples (Soil, Water, and Air)
OO Ayeleru, HU Modekwe, OO Adefiranye, BL Fafowora, MA Onu, ...
Electronic Waste Management: Policies, Processes, Technologies, and Impact …, 2023
12023
Electronic Waste Management Strategy in a Circular/Control Economy
HU Modekwe, OO Ayeleru, OC Ogunnigbo, BL Fafowora, TT Nyam, ...
Electronic Waste Management: Policies, Processes, Technologies, and Impact …, 2023
12023
Electronic Waste Management in Developing Countries—The Sub‐Saharan Africa Experience
HU Modekwe, OO Ayeleru, JA Adeniran, BL Fafowora, MA Onu, TT Nyam, ...
Electronic Waste Management: Policies, Processes, Technologies, and Impact, 1-12, 2023
12023
Production of Carbon Nanotubes Via Catalytic Pyrolysis of Waste Polypropylene Plastics Usable in Membranes for Acid Mine Treatment
HU Modekwe
University of Johannesburg, 2022
12022
Heavy metals removal from mine wastewater using polysulfone membrane infused with waste plastic-derived carbon nanotubes as filler
HU Modekwe, IM Ramatsa, MA Mamo, OO Sadare, MO Daramola, ...
Waste Management Bulletin 3 (1), 39-47, 2025
2025
Optimized process and modeling of waste Gmelina arborea seed pyrolytic oil production and its characterization as a sustainable biofuel
VI Ameh, OO Ayeleru, HU Modekwe, PN Nomngongo, IM Ramatsa
Sustainable Chemistry for the Environment, 100212, 2025
2025
Bibliometric study of plastics microfluidic chip from 1994 to 2022: A Review
RM Faisal, OO Ayeleru, HU Modekwe, IM Ramatsa
Heliyon, 2025
2025
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