Bioremediation of acid mine drainage – Review

Anekwe, Ifeanyi Michael Smarte; Isa, Yusuf Makarfi

doi:10.1016/j.aej.2022.09.053

Cited by 26 publications

(11 citation statements)

References 190 publications

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“…The efficiency of bioremediation techniques varies depending on site-specific conditions and the characteristics of the AMD [50]. A comprehensive understanding of the site and thorough monitoring are crucial for successful implementation.…”

Section: Bioremediationmentioning

confidence: 99%

Acid Mine Drainage Treatment and Control: Remediation Methodologies, Mineral Beneficiation and Water Reclamation Strategies

Mapukata,

Mudzanani,

Maurice Chauke

et al. 2024

Hydrology - Current Research and Future Directions

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Although mining plays a vital role in the economic development of many countries, devastating environmental repercussions are associated with it. The extraction of mineral resources inevitably results in the generation of acid mine drainage (AMD), which entails intricate oxidation interactions that occur under ambient conditions in abandoned and active mines. The arbitrary release of AMD can lead to a series of long-term environmental problems, degradation of aquatic habitats and health complications. Over the years, extensive progress has been made in the prevention and treatment of AMD, with some processes even progressing as far as the commercialisation level. This chapter therefore discusses the process of AMD formation, preventative and control measures and AMD treatment options applicable to both operating and developed mines, as well as to researchers interested in environmental remediation and rehabilitation. Advances in mineral beneficiation and water reclamation strategies employed in the AMD treatment processes are highlighted to shed light on strides being made towards promoting a circular economy in mining industries. The featured work therefore demonstrates the global progress towards environmental protection and water resource management. The challenges and loopholes associated with the current AMD treatment methods are deliberated and possible future prospects in the field are proposed.

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Section: Bioremediationmentioning

confidence: 99%

Acid Mine Drainage Treatment and Control: Remediation Methodologies, Mineral Beneficiation and Water Reclamation Strategies

Mapukata,

Mudzanani,

Maurice Chauke

et al. 2024

Hydrology - Current Research and Future Directions

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“…microbial aggregation), biocurtains (biobarriers), or gene-mediated methods (Gough and Nielsen 2016 ). By utilizing the natural adaptability and abilities of acidophiles to survive in acidic environments, bioaugmentation can be designed for remediation of acidic mine drainage (Anekwe and Isa 2023 ), removal of metal contaminants from acidic sites (Ayangbenro et al 2018 ), treatment of acidic industrial wastewater (e.g. acidic food processing, acidic metal planting, and acidic petrochemical wastewater treatment) (Nzila et al 2016 , Anh et al 2021 ), remediation and restoration of acidic soil/sediment and water bodies (Kumar et al 2018 , Adetunji and Anani 2021 ), and recovery of valuable products from waste streams under acidic conditions (Zhang et al 2022b ).…”

Section: Harnessing Microbial Activity In Contaminated Acidic Environ...mentioning

confidence: 99%

Exploitation of microbial activities at low pH to enhance planetary health

Atasoy,

Álvarez Ordóñez,

Cenian

et al. 2023

FEMS Microbiology Reviews

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Awareness is growing that human health cannot be considered in isolation but is inextricably woven with the health of the environment in which we live. It is however under-recognised that the sustainability of human activities strongly relies on preserving the equilibrium of the microbial communities living in/on/around us. Microbial metabolic activities are instrumental for production, functionalization, processing and preservation of food. For circular economy, microbial metabolism would be exploited to produce building blocks for the chemical industry, to achieve effective crop protection, agri-food waste revalorization or biofuel production, as well as in bioremediation and bioaugmentation of contaminated areas. Low pH is undoubtedly a key physical-chemical parameter that needs to be considered for exploiting the powerful microbial metabolic arsenal. Deviation from optimal pH conditions has profound effects on shaping the microbial communities responsible for carrying out essential processes. Furthermore, novel strategies to combat contaminations and infections by pathogens rely on microbial-derived acidic molecules that suppress/inhibit their growth. Herein, we present the state-of-the-art of the knowledge on the impact of acidic pH in many applied areas and how this knowledge can guide us to use the immense arsenal of microbial metabolic activities for their more impactful exploitation in a Planetary Health perspective.

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“…Among the most prominent factors is the presence of toxic substances that can hamper microbiota growth and metabolic activity. Also, for certain compounds, low xenobiotic solubility, poor bioavailability or weak susceptibility to biodegradation may result in reduced bioremediation efficacy (Anekwe and Isa, 2023).…”

Section: Introductionmentioning

confidence: 99%

Microbiological treatment of post-industrial water: Example of efficient bioremediation of the heavily polluted Kalina pond, Poland

Starzec,

Stańkowska,

Supel

et al. 2024

Journal of Water and Land Development

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The Kalina pond has been well known as a severely degraded area in the Silesia region, Poland. The environmental deterioration results from high contamination of water and bottom sediments with recalcitrant and toxic organic compounds, mainly phenol. The study was aimed at developing a bioremediation-based approach suitable for this type of polluted areas, involving microbiological treatment of water as a key and integral part of other necessary actions: mechanical interventions and the use of physical methods. During the initial biological treatment stage, autochthonous microorganisms were isolated from contaminated samples of water, soil and sediment, then subjected to strong selective pressure by incubation with the pollutants, and finally, cultivated to form a specialised microbial consortium consisting of five extremophilic bacterial strains. Consortium propagation and its biodegradation activity were optimised under variant conditions enabling bacteria to proliferate and to obtain high biomass density at large volumes allowing for the in situ application. After installing aeration systems in the pond, the consortium was surface-sprinkled to launch bioremediation and then both bacterial frequency and the contaminant level was systematically monitored. The complex remediation strategy proved efficient and was implemented on an industrial scale enabling successful remedial of the affected site. Treatment with the specifically targeted and adapted microbial consortium allowed for removal of most organic pollutants within a four-month season of 2022: the chemical oxygen demand (COD) value decreased by 72%, polyaromatic hydrocarbon (PAH) level by 97%, while the content of total phenols and other monoaromatic hydrocarbons (BTEX) dropped below the detection thresholds.

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Bioremediation of acid mine drainage – Review

Cited by 26 publications

References 190 publications

Acid Mine Drainage Treatment and Control: Remediation Methodologies, Mineral Beneficiation and Water Reclamation Strategies

Acid Mine Drainage Treatment and Control: Remediation Methodologies, Mineral Beneficiation and Water Reclamation Strategies

Exploitation of microbial activities at low pH to enhance planetary health

Microbiological treatment of post-industrial water: Example of efficient bioremediation of the heavily polluted Kalina pond, Poland

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