Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions

Huang, Cong; Liu, Qian; Li, Zhiling; Ma, Xiaodan; Hou, Yanan; Ren, Nan-Qi; Wang, Aijie

doi:10.1016/j.watres.2020.116526

Cited by 154 publications

(31 citation statements)

References 33 publications

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“…The use of sulfide as electron donor for autotrophic denitrification is well known and has already been applied at full scale ( Wu et al, 2016 ). Sulfide was also found to be a suitable substrate for the development of a selected community of specialized autotrophic, heterotrophic, and mixotrophic denitrifiers ( Huang et al, 2021 ), where Thiobacillus was the enriched microorganisms with a maximum RA of 73.8% during the autotrophic phase.…”

Section: Discussionmentioning

confidence: 99%

Enrichment of Autotrophic Denitrifiers From Anaerobic Sludge Using Sulfurous Electron Donors

et al. 2021

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Section: Discussionmentioning

confidence: 99%

Enrichment of Autotrophic Denitrifiers From Anaerobic Sludge Using Sulfurous Electron Donors

et al. 2021

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“…In addition, Shewanella plays an important role in marine P transformation through producing a large amount of extracellular polymeric substances and showing a relatively high P removal performance under aerobic conditions (Jiang et al, 2018). Acinetobacter and Pseudomonas have great nitrogen removal ability, and could remove NH 4 + -N and NO 3 − -N via heterotrophic nitrification and aerobic denitrification, respectively (Huang et al, 2021;Li et al, 2021). Thus, it was inferred that plants in PFM could enrich more microbes with the function of salt tolerance and pollutant removal performance.…”

Section: Microbial Structure Of Floating Bed M and Pfmmentioning

confidence: 99%

Synergistic Action of Plants and Microorganism in Integrated Floating Bed on Eutrophic Brackish Water Purification in Coastal Estuary Areas

et al. 2021

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Eutrophic water bodies in coastal estuary areas usually show saline-alkaline characteristics influenced by tides. The purification performance of traditional planted floating beds in this water body is limited because of the poor growth of plants. A novel integrated floating bed with plants (Iris pseudoacorus), fillers (volcanic rocks and zeolites), and microbes named PFM was established, and the pollutant removal performance was studied. Results showed that the average ammonia nitrogen (NH4+-N), total nitrogen (TN), total phosphorus (TP), and permanganate index (CODMn) removal efficiencies of PFM were higher with the value of 81.9, 78.5, 53.7, and 72.4%, respectively, when compared with the other floating beds containing plants (P), fillers (F), microbes (M), and plants and fillers (PF) in this study. Therein, the most of NH4+-N (30.1%), TN (27.9%), TP (22.5%), and CODMn (43.6%) were removed by microbes, higher than those removed by plants and fillers. Analysis of the microbial community revealed that the establishment of PFM led to a higher microbial richness than M, and Acinetobacter, as the main microbes with the function of salt tolerance and denitrification, were dominated in PFM with a relative abundance of 6.8%. It was inferred that the plants and fillers might enrich more salt-tolerance microbes for pollutants removal, and microbes favored the growth of plants via degradation of macromolecular substrates. Synergistic actions in the process of eutrophic brackish water purification were established. This study provided an idea for the application of integrated floating bed in eutrophic and brackish water bodies purification in coastal estuary areas.

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“…The aquatic systems harbor extremely diverse microbial communities, which play a crucial role in global biogeochemical cycles and provide functions to ultimately sustain microbial ecology stability [2,3]. Meanwhile, growth of microorganisms is generally governed by the growth-supporting organic matter and nutrients (bottom-up control) and predators' predation (top-down control) in the DOC-microorganism-predator ecosystem within relevant time scales [4][5][6]. Concerns on the impacts of DOC pollution and eukaryotic predation have led to extensive studies on factors changing the resistance and resilience of microbial communities and consequent community stability [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…As rapid global urbanization in developing countries, a large amount of sewage was directly discharged into urban rivers without proper treatment [12,13,14]. The sewage DOC triggered water blackening and odorization and altered the community structure and function [6,14], which could be different from them of nutrient-induced eutrophic water. Moreover, growing evidences indicated that predators' predation altered the aquatic microbial community composition and consequent community assembly [15].…”

Section: Introductionmentioning

confidence: 99%

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Organic Carbon and Eukaryotic Predation Synergistically Change Resistance and Resilience of Aquatic Microbial Communities

Fang¹,

Liu²,

Mu³

et al. 2021

Preprint

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With dramatic global rise of urbanization, anthropogenic activities alter aquatic ecosystems in urban rivers through inputs of dissolved organic carbon (DOC) and nutrients. Microorganisms play crucial roles in global biogeochemical element cycles, providing functions to sustain microbial ecology stability. The DOC (bottom-up control) and microbial predation (top-down control) may synergistically drive the competition and evolution of aquatic microbial communities, and their resistance and resilience, of which experimental evidences remain scarce. In this study, laboratory sediment-water column experiments were employed to mimic the organic carbon-driven water blackening and odorization process in urban rivers and to elucidate impacts of DOC on the microbial ecology stability. Results showed that low DOC (25-75 mg/L TOC) and high DOC (100-150 mg/L TOC) changed the aquatic microbial community assemblies in different patterns: (1) the low DOC enriched K-selection microorganisms (e.g., bacteria and predators) with low biomass and low resilience, as well as high resistance to perturbations in changing microbial community assemblies; (2) the high DOC was associated with r-selection microorganisms with high biomass and improved resilience, together with low resistance detrimental to microbial ecology stability. Overall, this study provided new insights into impacts of DOC on aquatic microbial ecology stability, which may guide sustainable urban river management.

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Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions

Cited by 154 publications

References 33 publications

Enrichment of Autotrophic Denitrifiers From Anaerobic Sludge Using Sulfurous Electron Donors

Enrichment of Autotrophic Denitrifiers From Anaerobic Sludge Using Sulfurous Electron Donors

Synergistic Action of Plants and Microorganism in Integrated Floating Bed on Eutrophic Brackish Water Purification in Coastal Estuary Areas

Organic Carbon and Eukaryotic Predation Synergistically Change Resistance and Resilience of Aquatic Microbial Communities

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