Addition of organic acids to acid mine drainage polluted wetland sediment leads to microbial community structure and functional changes and improved water quality

Aguinaga, Oscar E.; White, Kenneth; Dean, Andrew P.; Pittman, Jon K.

doi:10.1016/j.envpol.2021.118064

Cited by 11 publications

(2 citation statements)

References 76 publications

(102 reference statements)

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“…As expected, the consensus tree provides a robust phylogenetic framework for the current study. At class level, we obtained clusters following the taxonomy, traits, and dynamics of microorganisms during the bioreactor operation [29,85].…”

Section: Microbial Diversity and Community Structurementioning

confidence: 99%

Dynamics of Microbial Communities during the Removal of Copper and Zinc in a Sulfate-Reducing Bioreactor with a Limestone Pre-Column System

Zambrano-Romero

Ramirez-Villacis

Trueba

et al. 2022

IJERPH

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Biological treatment using sulfate-reducing bacteria (SRB) is a promising approach to remediate acid rock drainage (ARD). Our purpose was to assess the performance of a sequential system consisting of a limestone bed filter followed by a sulfate-reducing bioreactor treating synthetic ARD for 375 days and to evaluate changes in microbial composition. The treatment system was effective in increasing the pH of the ARD from 2.7 to 7.5 and removed total Cu(II) and Zn(II) concentrations by up to 99.8% and 99.9%, respectively. The presence of sulfate in ARD promoted sulfidogenesis and changed the diversity and structure of the microbial communities. Methansarcina spp. was the most abundant amplicon sequence variant (ASV); however, methane production was not detected. Biodiversity indexes decreased over time with the bioreactor operation, whereas SRB abundance remained stable. Desulfobacteraceae, Desulfocurvus, Desulfobulbaceae and Desulfovibrio became more abundant, while Desulfuromonadales, Desulfotomaculum and Desulfobacca decreased. Geobacter and Syntrophobacter were enriched with bioreactor operation time. At the beginning, ASVs with relative abundance <2% represented 65% of the microbial community and 21% at the end of the study period. Thus, the results show that the microbial community gradually lost diversity while the treatment system was highly efficient in remediating ARD.

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Section: Microbial Diversity and Community Structurementioning

confidence: 99%

Dynamics of Microbial Communities during the Removal of Copper and Zinc in a Sulfate-Reducing Bioreactor with a Limestone Pre-Column System

Zambrano-Romero

Ramirez-Villacis

Trueba

et al. 2022

IJERPH

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“…Acid mine drainage (AMD) is one of the most significant environmental issues resulting from mining activities. 1–3 It is characterized by extreme acidity and high concentrations of sulfates and heavy metals, which pose a significant risk to the ecosystem and human health. 4,5 AMD remediation is broadly categorized into “active” and “passive” treatment approaches.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the development and effects of a combined treatment system for acid mine drainage via bio-oxidation and carbonate rock neutralization

Zhang

Wang

et al. 2023

Environ. Sci.: Water Res. Technol.

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Assessment of heavy metals bioaccumulation in Silver Birch (Betula pendula Roth) from an AMD active, abandoned gold mine waste

Jurković,

Kazlagić,

Sulejmanović

et al. 2023

Environ Geochem Health

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Addition of organic acids to acid mine drainage polluted wetland sediment leads to microbial community structure and functional changes and improved water quality

Cited by 11 publications

References 76 publications

Dynamics of Microbial Communities during the Removal of Copper and Zinc in a Sulfate-Reducing Bioreactor with a Limestone Pre-Column System

Dynamics of Microbial Communities during the Removal of Copper and Zinc in a Sulfate-Reducing Bioreactor with a Limestone Pre-Column System

Analysis of the development and effects of a combined treatment system for acid mine drainage via bio-oxidation and carbonate rock neutralization

Assessment of heavy metals bioaccumulation in Silver Birch (Betula pendula Roth) from an AMD active, abandoned gold mine waste

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