| Comparison of extractants for the separation of TaF5 and NbF5 in different acidic media MJ Ungerer, DJ Van Der Westhuizen, G Lachmann, HM Krieg Hydrometallurgy 144, 195-206, 2014 | 27 | 2014 |
| Comparison of ionically and ionical-covalently cross-linked polyaromatic membranes for SO2 electrolysis R Peach, HM Krieg, AJ Krüger, D Van der Westhuizen, D Bessarabov, ... International journal of hydrogen energy 39 (1), 28-40, 2014 | 27 | 2014 |
| Mechanistic study of hafnium and zirconium extraction with organophosphorus extractants V Vermaak, HM Krieg, L De Beer, D Van der Westhuizen Solvent Extraction and Ion Exchange 36 (2), 150-161, 2018 | 17 | 2018 |
| Molecular modelling of tantalum penta-halides during hydrolysis and oxidation reactions MJ Ungerer, C Van Sittert, DJ Van Der Westhuizen, HM Krieg Computational and Theoretical Chemistry 1090, 112-119, 2016 | 16 | 2016 |
| Uranium recovery from simulated molybdenum-99 production residue using non-dispersive membrane based solvent extraction M Fourie, WCMH Meyer, DJ van der Westhuizen, HM Krieg Hydrometallurgy 164, 330-333, 2016 | 15 | 2016 |
| Solvent extraction and separation of hafnium from zirconium using Ionquest 801 L De Beer, DJ Van der Westhuizen, HM Krieg Journal of the Southern African Institute of Mining and Metallurgy 116 (1 …, 2016 | 13 | 2016 |
| Separation of zirconium and hafnium via solvent extraction V der Westhuizen, D Jacobus North-West University, 2010 | 11 | 2010 |
| Automation of membrane based solvent extraction unit for Zr and Hf separation K Meerholz, DJ van der Westhuizen, HM Krieg Separation and Purification Technology 179, 204-214, 2017 | 10 | 2017 |
| Separation of tantalum and niobium by solvent extraction MJ Ungerer North-West University, 2012 | 9 | 2012 |
| Uranium recovery and purification from simulated waste streams containing high uranium concentrations with dispersion liquid membranes M Fourie, DJ van der Westhuizen, HM Krieg Journal of Radioanalytical and Nuclear Chemistry 317, 355-366, 2018 | 8 | 2018 |
| Feasibility of electro-reduction of U (VI) in oxalic acid using an electrolytic CEM-separated cell M Potgieter, WD Van der Spoel Badenhorst, JC Barry, ... Journal of Radioanalytical and Nuclear Chemistry 326, 1505-1510, 2020 | 6 | 2020 |
| The separation of zirconium and hafnium from (NH4) 3Zr (Hf) F7 using amine-based extractants EW Conradie, DJ Van Der Westhuizen, JT Nel, HM Krieg Journal of the Southern African Institute of Mining and Metallurgy 116 (10 …, 2016 | 6 | 2016 |
| The time dependent solvent extraction of Ta and Nb L de Beer, MJ Ungerer, DJ van der Westhuizen, HM Krieg Advanced Materials Research 1019, 433-438, 2014 | 6 | 2014 |
| Cobalt–nickel pertraction refinery to process pregnant leach solution from recycled spent catalysts Part 1: cobalt extraction from a binary system N Mans, D Van Der Westhuizen, D Bruinsma, P Cole, J Du Toit, E Munnik, ... Solvent Extraction and Ion Exchange 38 (4), 441-454, 2020 | 5 | 2020 |
| DFT modelling of tantalum pentafluoride extraction with phosphorus-based extractants–A molecular dynamics study MJ Ungerer, C Van Sittert, DJ van Der Westhuizen, HM Krieg Journal of Physics and Chemistry of Solids 135, 109121, 2019 | 5 | 2019 |
| UV–Vis spectrophotometric analytical technique for monitoring Fe2+ in the positive electrolyte of an ICRFB JP du Toit, HM Krieg, N Mans, DJ van der Westhuizen Journal of Power Sources 553, 232178, 2023 | 4 | 2023 |
| Molecular modelling of tantalum fluoride in sulphuric acid medium: A DFT study MJ Ungerer, DJ Van der Westhuizen, HM Krieg, C Van Sittert Journal of Molecular Liquids 288, 111056, 2019 | 4 | 2019 |
| Membrane Screening for Iron–Chrome Redox Flow Batteries N Mans, D van der Westhuizen, HM Krieg Advanced Energy and Sustainability Research 5 (2), 2300195, 2024 | 3 | 2024 |
| Recovery of uranium from nuclear conversion plant waste M Potgieter, JC Barry, DJ van Der Westhuizen, HM Krieg Journal of the Southern African Institute of Mining and Metallurgy 117 (8 …, 2017 | 3 | 2017 |
| Solvent extraction separation of zirconium (IV) and hafnium (IV) as chloride and fluoride feedstock solutions using amine extractants D Van der Westhuizen, G Lachmann, H Krieg South African Journal of Chemical Engineering 20 (2), 31-55, 2015 | 3 | 2015 |
