Challenges and avenues for acid mine drainage treatment, beneficiation, and valorisation in circular economy: A review

Masindi, Vhahangwele; Foteinis, Spyros; Renforth, Phil; Ndiritu, John; Maree, J. P.; Tekere, Memory; Chatzisymeon, Efthalia

doi:10.1016/j.ecoleng.2022.106740

Cited by 62 publications

(44 citation statements)

References 189 publications

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“…The bioaccumulation factor (Table 2) is the proportion of heavy metal concentration in edible part of a plant to heavy metal concentration in a soil sample [34,35]. Correspondingly, the transfer of heavy metals from soil to plant was calculated as shown by [36]: Equation (1).…”

Section: Bioaccumulation Factor (Baf) and Translocation Factor (Tf) O...mentioning

confidence: 99%

“…Freshwater supply is one of the world's greatest issues, with roughly 33% of the world's drinking water coming from surface sources like streams, dams, lakes, and trenches. South Africa, in the same way as other different nations, contamination of existing water assets is the most risk to a reasonable water supply [1]. The country is recorded as one of the driest countries on the planet, and with a serious water shortage projected very soon [2].…”

Section: Introductionmentioning

confidence: 99%

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Heavy Metal Analysis and Health Risk Assessment of Potato (Solanum tuberosum L.) Cultivars irrigated with Fly Ash-Treated Acid Mine Drainage

2023

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In water-scant regions, the reuse of (un)treated acid mine drainage effluent (AMD) water for crop irrigation has turned into a prerequisite. The study assesses the levels of heavy metals, and health risk assessment in two potato crop cultivars, namely, Fianna and Lady rosetta (both determinate and indeterminate) when exposed to irrigation with different fly ash: acid mine drainage amelioration ratios. The study investigates the health risk assessment in the potato tissues namely, stem, tubers, new and old leaves of the potato cultivars. The treatments constituted a control, 50% FA: AMD, 75% FA: AMD ratio, and 100% AMD (untreated AMD). The results showed that the heavy metals of plants irrigated with AMD mixed with FA was significantly affected differently at harvest. In summary, the concentration of Cd was over the WHO acceptable standards in untreated acid mine drainage water. Fianna recorded 1.34 mg/kg while a notably decrease was observed in Lady rosetta with (1.01 mg/kg). In any case, FA was proven to significantly lessen the Cd particles in both FA-AMD ratios: Cd content was 0.98 mg/kg and 0.84 mg/kg in 50% FA: AMD treatment for Fianna and Lady rosetta separately, while the recommended maximum limit is 0.1 mg/kg. With the readings recorded, they are slightly high according to the CODEX general standard for food contaminants and toxins in food and feed (CODEX STAN 193-1995). Then again, in 75% FA: AMD ratio, the Cd concentration was 0.04 mg/kg and 0.03 mg/kg for Fianna and Lady rosetta exclusively. It is in this way obvious that FA adsorbed the Cd ions, and the two cultivars fulfill the CODEX guideline, nonetheless the potato crop irrigated with a 75% FA: AMD ratio can be consumed by humans without causing any detrimental effects.

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Section: Bioaccumulation Factor (Baf) and Translocation Factor (Tf) O...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heavy Metal Analysis and Health Risk Assessment of Potato (Solanum tuberosum L.) Cultivars irrigated with Fly Ash-Treated Acid Mine Drainage

2023

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“…For example, the oxidation of pyrite (FeS2) or other sulfide (S 2− ) bearing minerals, which is typically catalysed by certain bacteria communities, will result in AMD rich in iron (Fe) and sulphate (SO 4 2− ) (Baker and Banfield, 2003, Sheoran et al, 2011, Wei et al, 2016, Masindi et al, 2022c.…”

Section: Introductionmentioning

confidence: 99%

Recovery of phosphate from municipal wastewater as calcium phosphate and its subsequent application for the treatment of acid mine drainage

Nepfumbada

Tavengwa

Masindi

et al. 2023

Resources, Conservation and Recycling

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“…Anaerobic reactions result in the consumption of hydrogen ions, leading to a reduction in acidity (Skousen et al 2017). Anaerobic wetlands are primarily characterised by the presence of organic matter, such as compost, and are typically underlain by limestone gravel (Masindi et al 2022). The process of water percolation through the organic matter to the limestone bed results in the attainment of anaerobic conditions (Masindi et al 2022).…”

Section: Conclusion and Recommendationsmentioning

confidence: 99%

Evaluation of the impact of coal mining on surface water in the Boesmanspruit, Mpumalanga, South Africa

Dzhangi,

Atangana

2023

Preprint

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Surface water quality has major environmental and socioeconomic consequences, notably in terms of the country’s long-term fresh water supply. This study aimed at assessing the current state of water quality and status of the Boesmanspruit in a coal mining environment. The study used historical water quality data for a period of five years. Aluminium, calcium, iron, manganese, magnesium, sodium, sulphate, electrical conductivity, pH and total dissolved solids were the water quality variables selected for the study. The water quality was evaluated against South African resource quality objectives, the South African water quality guidelines, Vol. 5 and 7, and the water quality indices (WQI) of the Canadian Council of Ministers of the Environment. The following parameters were above the prescribed thresholds: pH, total dissolved solids, electrical conductivity, sulphate, manganese and iron. The data was analysed using such as the CCME-WQI, the comprehensive pollution index (CPI) and multivariate statistics. The CCME-WQI results showed that monitoring locations GR S26 and GR S21 near mining activities had poor water quality (40–44), whereas CPI also had similar category results for the monitoring points, indicating that they were heavily polluted (2.4–4.8). The WQI showed that if certain variables, such as aluminium, iron, magnesium, sulphate, electrical conductivity and total dissolved solids, exceed the permissible range, the water quality would deteriorate in accordance with the CPI classification. Therefore, the CPI was the best way to categorise the water quality. The principal component analysis and cluster analysis identified two primary sources of pollution which are anthropogenic and natural. The utilisation of statistical analysis proved to be effective in determining the ideal quantity of significant variables within the study area. The study recommends low-cost options for reducing the effects of acid mine drainage, which includes passive mine water treatment methods using artificial wetlands.

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Challenges and avenues for acid mine drainage treatment, beneficiation, and valorisation in circular economy: A review

Cited by 62 publications

References 189 publications

Heavy Metal Analysis and Health Risk Assessment of Potato (Solanum tuberosum L.) Cultivars irrigated with Fly Ash-Treated Acid Mine Drainage

Heavy Metal Analysis and Health Risk Assessment of Potato (Solanum tuberosum L.) Cultivars irrigated with Fly Ash-Treated Acid Mine Drainage

Recovery of phosphate from municipal wastewater as calcium phosphate and its subsequent application for the treatment of acid mine drainage

Evaluation of the impact of coal mining on surface water in the Boesmanspruit, Mpumalanga, South Africa

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