Evaluating the effects of pH and temperature on sulphate-reducing bacteria and modelling of their effects in stirred bioreactors
dc.contributor.author | Moloantoa, Karabelo | |
dc.contributor.author | Khetsha, Zenzile | |
dc.contributor.author | Mochane, Mokgaotsa | |
dc.contributor.author | Unuofin, John Onolame | |
dc.contributor.author | Atangana, Abdon | |
dc.contributor.author | Cason, Errol | |
dc.contributor.author | Van Heerden, Esta | |
dc.contributor.author | Castillo, Julio | |
dc.date.accessioned | 2024-05-28T11:08:26Z | |
dc.date.available | 2024-05-28T11:08:26Z | |
dc.date.issued | 2023 | |
dc.description | DATA AVAILABILITY STATEMENT : Data used and presented in this study can be made available upon requests to the corresponding authors. | en_US |
dc.description.abstract | Sulphate (SO4) abundance in the earth’s crust contributes largely to industrial wastewater contamination lowering the pH, which exuberates the dissolution of metals forming acidic drainages. Biological sulphate reduction as a remediation process can be affected by factors such as pH, temperature and high sulphide concentrations. In this study, sulphate-reducing bacterial community enriched from mine wastewaters was applied in semi-automated bioreactors to assess the effects of these factors on microbial sulphate reduction capacities. Low pH (3.5) and temperature (10°C) were observed to promote the toxicity of sulphur-reduced species on the consortium while mesophilic temperature (25°C) and near neutral pH (6.2) were observed to induce optimum SO4 reduction attaining a maximum of 95% SO4 reduction. Obtained SO4 reduction dynamics data was then applied in formulating a unique non-competitive inhibition equation that models biogeochemical events during SO4 reduction under varied pH and temperature conditions and predicts the efficacy of a bioremediation system. | en_US |
dc.description.department | Chemical Engineering | en_US |
dc.description.librarian | am2024 | en_US |
dc.description.sdg | SDG-12:Responsible consumption and production | en_US |
dc.description.uri | http://www.tandfonline.com/journals/tcsb21 | en_US |
dc.identifier.citation | Karabelo Moloantoa, Zenzile Khetsha, Mokgaotsa Mochane, John Unuofin, Abdon Atangana, Errol Cason, Esta van Heerden & Julio Castillo (2023) Evaluating the effects of pH and temperature on sulphate-reducing bacteria and modelling of their effects in stirred bioreactors, Environmental Pollutants and Bioavailability, 35:1, 2257388, DOI: 10.1080/26395940.2023.2257388. | en_US |
dc.identifier.issn | 2639-5940 | |
dc.identifier.other | 10.1080/26395940.2023.2257388 | |
dc.identifier.uri | http://hdl.handle.net/2263/96268 | |
dc.language.iso | en | en_US |
dc.publisher | Taylor and Francis | en_US |
dc.rights | © 2023 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License. | en_US |
dc.subject | Bacterial consortium | en_US |
dc.subject | Biogeochemical modelling | en_US |
dc.subject | Bio-precipitation | en_US |
dc.subject | Bioreactors | en_US |
dc.subject | Bioremediation | en_US |
dc.subject | Sulphate reduction | en_US |
dc.subject | Water contamination | en_US |
dc.subject | SDG-12: Responsible consumption and production | en_US |
dc.title | Evaluating the effects of pH and temperature on sulphate-reducing bacteria and modelling of their effects in stirred bioreactors | en_US |
dc.type | Article | en_US |