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Comparison of microbial communities in different sulfur-based autotrophic denitrification reactors
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Comparison of microbial communities in different sulfur-based autotrophic denitrification reactors
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Journal Article
Comparison of microbial communities in different sulfur-based autotrophic denitrification reactors
2017
Overview
Sulfur-based autotrophic denitrification is a useful approach for the eutrophication control in lakes and rivers, yet the microorganisms in this process are still not clearly known. In order to reveal the bacterial composition in these denitrification reactors, high-throughput sequencing was performed over the sludge samples. And the results indicated that when using thiosulfate, elemental sulfur, and sulfide as electron donors, the microbial communities were clearly different. Besides the well-known
Thiobacillus
, many other genera of denitrifiers were identified.
Chlorobaculum
,
Dechloromonas
, and
Acinetobacter
were the most predominant genera in thiosulfate, elemental sulfur, and sulfide systems, respectively, while
Janthinobacterium
accounted for the most in the heterotrophic reactor with ethanol as electron donor.
Thiobacillus
existed abundantly in every system, even in the heterotrophic one. PCA comparison revealed that the microbial communities in the denitrification systems may vary greatly according to the electron donor, the running condition, sampling position, and other factors.
Publisher
Springer Berlin Heidelberg,Springer,Springer Nature B.V
Subject
