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Related Experiment Video

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Extracting DNA from the Gut Microbes of the Termite Zootermopsis Angusticollis and Visualizing Gut Microbes
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Indigenous microbes induced fluoride release from aquifer sediments.

Xubo Gao1, Wenting Luo1, Xuesong Luo2

  • 1State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, Wuhan, 430074, PR China.

Environmental Pollution (Barking, Essex : 1987)
|June 12, 2019
PubMed
Summary

Indigenous microbes play a key role in releasing fluoride from aquifer sediments, contributing to contaminated groundwater. This finding is crucial for managing fluoride in drinking water globally.

Keywords:
Aquifer sedimentF-bearing mineralsF-rich groundwaterIndigenous microbesRelease

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Area of Science:

  • Environmental Science
  • Geochemistry
  • Microbiology

Background:

  • Fluoride contamination in groundwater poses a global health risk.
  • Mechanisms of fluoride release from sediments are known, but microbial involvement is unclear.

Purpose of the Study:

  • To investigate the role of indigenous microbes in fluoride mobilization from aquifer sediments.
  • To understand the biogeochemical processes behind fluoride-rich groundwater formation.

Main Methods:

  • Microcosm-based approach.
  • Geochemical analysis.
  • Microbiology and molecular ecology techniques.

Main Results:

  • Microbial communities are abundant in high fluoride groundwater (≥1129 OTUs).
  • Indigenous microbes significantly mobilize fluoride from aquifer sediments.
  • Fluoride release correlates with increased Ca, Mg, Al, and Mn concentrations, suggesting mineral dissolution in an acidic environment.

Conclusions:

  • Indigenous microbes are essential players in fluoride release in groundwater systems.
  • Findings offer insights into fluoride biogeochemical cycling and strategies for managing contaminated groundwater.