| Waste to Energy: A focus on the impact of substrate Type in Biogas production N Nwokolo, P Mukumba, K Obileke, M Enebe Processes, 1-21, 2020 | 84 | 2020 |
| Biogas digester types installed in South Africa: A review A Mutungwazi, P Mukumba, G Makaka Renewable and Sustainable Energy Reviews 81, 172-180, 2018 | 81 | 2018 |
| Anaerobic digestion: Technology for biogas production as a source of renewable energy—A review KC Obileke, N Nwokolo, G Makaka, P Mukumba, H Onyeaka Energy & Environment 32 (2), 191-225, 2021 | 67 | 2021 |
| Biogas upgrading approaches with special focus on siloxane removal—A review P Nyamukamba, P Mukumba, ES Chikukwa, G Makaka Energies 13 (22), 6088, 2020 | 42 | 2020 |
| Biogas technology in South Africa, problems, challenges and solutions P Mukumba, G Makaka, S Mamphweli International Journal of Sustainable Energy and Environmental Research 5 (4 …, 2016 | 36 | 2016 |
| Bioenergy from bio-waste: a bibliometric analysis of the trend in scientific research from 1998–2018 KC Obileke, H Onyeaka, O Omoregbe, G Makaka, N Nwokolo, ... Biomass Conversion and Biorefinery, 1-16, 2020 | 35 | 2020 |
| A possible design and justification for a biogas plant at Nyazura Adventist High School, Rusape, Zimbabwe P Mukumba, G Makaka, S Mamphweli, S Misi Journal of Energy in Southern Africa 24 (4), 12-21, 2013 | 31 | 2013 |
| Anaerobic digestion of donkey dung for biogas production P Mukumba, G Makaka, S Mamphweli South African Journal of Science 112 (7-8), 1-4, 2016 | 25 | 2016 |
| An assessment of the performance of a biogas digester when insulated with sawdust P Mukumba, G Makaka, C Shonhiwa International Journal of Energy and Power Engineering 4 (2), 24-31, 2015 | 20 | 2015 |
| Economic analysis of biogas production via biogas digester made from composite material KC Obileke, G Makaka, N Nwokolo, EL Meyer, P Mukumba ChemEngineering 6 (5), 67, 2022 | 19 | 2022 |
| An analysis of bio-digester substrate heating methods: A review F Makamure, P Mukumba, G Makaka Renewable and Sustainable Energy Reviews 137, 110432, 2021 | 19 | 2021 |
| Design, construction and mathematical modelling of the performance of a biogas digester for a family in the Eastern Cape province, South Africa P Mukumba, G Makaka, S Mamphweli, P Masukume African Journal of Science, Technology, Innovation and Development 11 (3 …, 2019 | 15 | 2019 |
| Optimization of the power output of a bare wind turbine by the use of a plain conical diffuser PM Masukume, G Makaka, P Mukumba Sustainability 10 (8), 2647, 2018 | 13 | 2018 |
| An insight into the status of biogas digesters technologies in South Africa with reference to the Eastern Cape Province P Mukumba, G Makaka, S Mamphweli, M Simon, E Meyer Fort Hare Pap 19, 5-29, 2012 | 12 | 2012 |
| Thermal performance evaluation of a double pipe heat exchanger installed in a biomass gasification system N Nwokolo, P Mukumba, KC Obileke Journal of Engineering 2020, 1-8, 2020 | 11 | 2020 |
| Improving the solid fuel properties of non-lignocellulose and lignocellulose materials through torrefaction N Nwabunwanne, T Vuyokazi, A Olagoke, O Mike, M Patrick, O Anthony Materials 14 (8), 2072, 2021 | 10 | 2021 |
| Mathematical Modelling of the Performance of a Biogas Digester Fed with Substrates at Different Mixing Ratios P Mukumba, G Makaka, S Mamphweli Asian Journal of Scientific Research, 255-266, 2018 | 8* | 2018 |
| Biogasification of horse dung using a cylindrical surface batch biodigester P Mukumba, G Makaka, S Mamphweli Frontiers in Bioenergy and Biofuels, 2017 | 8 | 2017 |
| Torrefaction characteristics of blended ratio of sewage sludge and sugarcane bagasse for energy production N Nwabunwanne, T Vuyokazi, A Olagoke, O Mike, M Patrick, O Anthony Applied Sciences 11 (6), 2654, 2021 | 7 | 2021 |
| Gasification of Eucalyptus Wood Chips in a Downdraft Gasifier for Syngas Production in South Africa NL Nwokolo, P Mukumba, KC Obileke International Journal of Renewable Energy Research (IJRER) 10 (2), 663-668, 2020 | 7 | 2020 |
