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Microbial vanadium (V) reduction in groundwater with different soils from vanadium ore mining areas
Liting Hao1, Baogang Zhang1, Chuanping Feng1
1School of Water Resources and Environment, China University of Geosciences Beijing, Key Laboratory of Groundwater Circulation and Evolution (China University of Geosciences Beijing), Ministry of Education, Beijing, 100083, China.
Chemosphere
|March 24, 2018
Summary
Soils from vanadium mining sites effectively reduced vanadium (V(V)) through bioremediation. Certain soil types and microbial communities, like Bryobacter, show high potential for V(V) reduction in polluted groundwater.
Area of Science:
- Environmental microbiology
- Bioremediation science
Background:
- Vanadium (V) contamination poses environmental risks, particularly in groundwater near mining operations.
- Bioreduction offers a sustainable approach to mitigate vanadium pollution.
Purpose of the Study:
- To evaluate the bioreduction potential of vanadium (V(V)) using soils from diverse vanadium mining areas.
- To identify microbial communities involved in V(V) reduction for potential bioremediation applications.
Main Methods:
- Collected soils from four distinct vanadium ore mining areas: titanomagnetite, stone coal, petroleum associated minerals, and uvanite.
- Assessed V(V) removal efficiencies over a 60-hour operation cycle.
- Utilized high-throughput 16S rRNA gene pyrosequencing to analyze microbial community composition.
Main Results:
- Soils from vanadium titanomagnetite and petroleum associated minerals areas demonstrated high V(V) removal efficiencies (approx. 92.0% and 91.0%, respectively).
- Soils from uvanite and stone coal areas showed lower, yet significant, V(V) removal (approx. 87.1% and 69.0%, respectively).
- Microbial analysis revealed the accumulation of Bryobacter and Acidobacteriaceae, known for V(V) reduction capabilities.
Conclusions:
- Specific soil types from vanadium mining sites possess significant V(V) bioreduction potential.
- Bryobacter and Acidobacteriaceae are key microbial players in vanadium bioremediation.
- Findings support the development of in situ bioremediation strategies for V(V)-polluted groundwater.
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