Probabilistic health risk assessment of heavy metals at wastewater discharge points within the Vaal River Basin, South Africa

Moloi, Mbuyiselwa Shadrack; Ogbeide, Ozekeke; Otomo, Patricks Voua

doi:10.1016/j.ijheh.2019.113421

Cited by 25 publications

(14 citation statements)

References 55 publications

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“…The RVSC also creates 2 new posts in the ARU (a center manager and an administrator), which will be filled in 2021 and will help to grow the ARU's executive management capacity. Several projects under the RVSC had significant traction in 2020, notably work on extreme weather events in QwaQwa and resilience (led by the Centre for Environmental Management, UFS-Bloemfontein, and supported by the South African Water Research Commission) and ecotoxicological and bacteriological assessment of water resources in MAP, with disturbing results (Mosolloane et al 2019;Moloi et al 2020;Mosolloane 2020). Because unemployment is extremely high in Phuthaditjhaba, the RVSC is also supporting key ARU research projects and relationships focusing on social entrepreneurship, migration, visual culture (Makombe and Nyambi 2020), translocal learning and sustainability , and spatiotemporal settlement patterns pre-and posttransition from apartheid (Onaolapo et al 2020) (Box 2).…”

Section: Relationship Building For Southern African Mountainsmentioning

confidence: 99%

“…These were highlighted by research focusing on ecotoxicological and bacteriological assessments of water resources by Dr Patricks Voua Otomo's research group. The work showed how these facilities have contributed to the contamination of local water resources by pathogenic bacteria, such as Escherichia coli, and inorganic pollutants (Moloi et al 2020;Mosolloane 2020).…”

Section: A B O U T T H E a U T H O R Smentioning

confidence: 99%

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The Afromontane Research Unit: Driving Connections and Capacity Building for the Sustainable Development of Southern African Mountains

Clark

Mukwada

Hansen

et al. 2021

Mountain Research and Development

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Section: Relationship Building For Southern African Mountainsmentioning

confidence: 99%

Section: A B O U T T H E a U T H O R Smentioning

confidence: 99%

The Afromontane Research Unit: Driving Connections and Capacity Building for the Sustainable Development of Southern African Mountains

Clark

Mukwada

Hansen

et al. 2021

Mountain Research and Development

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“…The proposed systematic review will be conducted as part of an effort in the advancement of bioremediation interventions in the Maluti-a-Phofung municipality of eastern Free State of South Africa. Municipal reports of the Maluti-a-Phofung municipality show high WWTP-linked pollution events that subsequently affect the surrounding aquatic ecosystem health [20,21], thus indicating a need for an intervention. The municipal authorities will be made aware of the preliminary review findings and bilateral discussions will help determine whether the mycofiltration technology could be adopted locally as a remediation tool for WWTP-linked pollution.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of mycofiltration for removal of contaminants from water: a systematic review protocol

Mnkandla

Otomo

2021

Environ Evid

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Background Mycofiltration is an environment friendly technology which involves the treatment of contaminated water by passing it through a network of fungal mycelium. This technology has gained momentum over the years, and the systematic review chartered in this protocol will compile and synthesise literature on mycofiltration studies, paying special attention to the types and levels of contaminants removed. The systematic review should provide insight into the removal efficiency of mycofiltration by synthesising the mycofiltration knowledge base. Moreover, the proposed contribution will inform further research and provide comprehensive information to relevant stakeholders, such as municipalities, which might be in need of interventions for alleviating wastewater-related pollution in surrounding water bodies. Methods This systematic review protocol is based on the question, “What is the effectiveness of mycofiltration for removal of contaminants from water?” A thorough search of peer reviewed journal articles and grey literature sources will be conducted on academic journal databases, websites, specialist sources such as environmental organisations as well social and networking sources. A supplemental search will also be performed by forward and backward citation tracing. A two-stage screening process at title, abstract and full text level, will be conducted, against predefined inclusion criteria. Studies that meet inclusion criteria will be subjected to quality assessment. Data will be extracted and compiled into a narrative synthesis and summarised into tables and figures. Meta-analysis will be performed where sufficient evidence-base allows.

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“…Pollution from wastewater treatment has signi cant consequences on river ecosystems (Bernhardt and Palmer, 2007;Grant et al, 2012;Moloi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Recent reports have suggested that e uent and sewage sludge from the wastewater treatment plant located in the eastern Free State region of South Africa have high concentrations of metals, with potential ecotoxic effects on organisms (Moloi et al, 2020). The study by Mosolloane et al (2019) Despite mounting evidence for increased contamination of aquatic and terrestrial ecosystems by WWTPs e uent, the Drakensberg Afromontane region of South-Africa, remains an understudied region in terms of pollution monitoring or ecotoxicological studies.…”

Section: Introductionmentioning

confidence: 99%

The biomass, survival, reproductive and biomarker responses of Helix pomatia to soil contaminated with treated and untreated wastewater.

Matseleng¹,

Ogbeide²,

Voua³

2021

Preprint

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Wastewater treatment facilities in developing countries like South Africa are major sources of contaminants via effluent into the environment, which could portend high toxicity risks for non-target flora and fauna. To this end, a study was conducted to determine the ecotoxicological responses of selected organism to treated and untreated wastewater from the wastewater treatment plants in an industrial town. The snail Helix pomatia was exposed to OECD artificial soil spiked with untreated or treated wastewater at the following concentrations: 0, 25, 50, 75, 100%. The ecotoxicological responses of Helix pomatia to wastewater were determined by assessing the biomass, survival, reproduction and biomarker responses (Catalase ‒ CAT and Acetylcholinesterase ‒ AChE activities). The overall results showed significant effects on the survival, reproduction and biomass of H. pomatia. Similar results were observed for juvenile emergence. An EC50 of 5.751% for egg production and an EC50 of 6.233% for juvenile emergence were determined in the untreated wastewater. Such indices could not be computed for the treated wastewater, indicating a decreased in toxicity between the untreated and the treated samples. For both the AChE and CAT activities, there was no statistical difference between treated and untreated wastewater treatments. The results from this study highlight the toxic effects of untreated wastewater and indicate that treated wastewater (effluent) released from the wastewater treatment plant in Phuthaditjhaba remains suitable for invertebrate fauna such as H. pomatia.

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Probabilistic health risk assessment of heavy metals at wastewater discharge points within the Vaal River Basin, South Africa

Cited by 25 publications

References 55 publications

The Afromontane Research Unit: Driving Connections and Capacity Building for the Sustainable Development of Southern African Mountains

The Afromontane Research Unit: Driving Connections and Capacity Building for the Sustainable Development of Southern African Mountains

Effectiveness of mycofiltration for removal of contaminants from water: a systematic review protocol

The biomass, survival, reproductive and biomarker responses of Helix pomatia to soil contaminated with treated and untreated wastewater.

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