Characteristics of Ammonia-oxidizing and Denitrifying Bacteria at the River-sediment Interface

Pei, Yuansheng; Wang, J.; Wang, Z.Y.; Yang, Zhifeng

doi:10.1016/j.proenv.2010.10.214

Cited by 15 publications

(8 citation statements)

References 28 publications

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“…Bands S1-S12 were reamplified and sequenced. sediments, soil and MWTPs were closely related to the genes of the uncultured bacteria and can be to α, β and γ subclasses of the Proteobacteria (Zhang et al, 2006;Magalhães et al, 2008;Pei et al, 2010). Paracoccus sp, R. palustris and A. denitrificans (Table 3) were, respectively, the most probable affiliations of S8, S9 and S11 gene (Figure 2), indicating these bacteria may be the dominant bacteria.…”

Section: Resultsmentioning

confidence: 93%

Diversity of NosZ gene in three municipal wastewater treatment plants located in different geographic regions

Hou¹,

Li²,

Zhang³

et al. 2012

Afr. J. Microbiol. Res.

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Diversity of nitrous oxide reductase genes (NosZ) in activated sludge was compared in the biological treatment process (BTCs, anaerobic, anoxic and aerobic process) of three municipal wastewater treatment plants located in different geographic regions. A total of 18 specific bands generated after polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analysis. The diversity of NosZ in MWTPs of Nanjing is higher than that of Xiamen and Foushan, and the similarity of DGGE bands from BTCs in the same MWTP is obviously higher than that of the same BTC in different MWTPs. 12 of 18 unique bands were selected, sequenced and identified by searching against Genbank using BLASTn, and the highest identity and score values of the isolated sequences were the NosZ gene of uncultured bacterium in non-redundant database of Genbank. However, the most probable affiliations of the bacteria harboring the NosZ gene were the denitrifying bacteria from α-or β-proteobacteria, includingAlicycliphilus denitricans, Herbaspirillum sp., Paracoccus denitrificans, and Rhodopseudomonas palustris. Phylogenetic analysis of the twelve sequences indicated that all the sequences could be divided into two main clusters. Each cluster not only contains species from αproteobacteria but also from β-proteobacteria.

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Section: Resultsmentioning

confidence: 93%

Diversity of NosZ gene in three municipal wastewater treatment plants located in different geographic regions

Hou¹,

Li²,

Zhang³

et al. 2012

Afr. J. Microbiol. Res.

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“…Enhanced aerobic and anaerobic bacteria accelerated the carbon and nitrogen removal in the water through several processes [6] [9]. Removal of TC to CO 2 by the system was attributed to the decomposition of organic materials by aerobic bacteria in the columns.…”

Section: Discussionmentioning

confidence: 98%

“…Through this process, organic materials in the water that are derived from anthropogenic activities [2] [3] and natural sources [4] [5] are decomposed to CO 2 by aerobic bacteria (genus Bacillus, Pseudomonas, etc.) [6] [7], while nitrogen is removed through denitrification via microbial conversion of nitrate to N 2 by α, β, and γ proteobacteria [8] [9]. However, limited water flow in lakes and ponds often causes inefficient self-purification [10].…”

Section: Introductionmentioning

confidence: 99%

Construction of a New Water Treatment System Based on Material Circulation

Perwira¹,

Hanashiro²,

Salamah³

et al. 2017

JWARP

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A new water treatment system based on material circulation was constructed for purification of naturally polluted pond water in an aquarium. The water treatment system consisted of microbial columns with different flow rates (1.8 L/min/column in 6-columns unit and 2.9 L/min/column in 3-columns unit). Two hundred liters of water from a naturally polluted pond were treated for 14 days using the water treatment system. After treatment, the COD, TC, and TN had been reduced by up to 19.2%, 14.4%, and 20.1%, respectively. The bacterial biomass in the 3-columns unit was 7-fold higher than that in the 6-columns unit, and PCR-DGGE analysis showed slightly different bacterial communities between the two columns (<86%). The new water treatment system also worked efficiently in a fish-cultivated aquatic environment, with TC and TN removal rates of 190 mg/week and 260 mg/week, respectively.

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“…In interstitial waters, in an anaerobic zone, in the deeper parts of the sediments, nitrates are denitrified. Redox conditions induce nitrification and denitrification processes (Pei et al 2010). In an aerobic zone, bacteria oxidize ammonium nitrogen to nitrates (Wang et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Biota communities influence on nutrients circulation in hyporheic zone—a case study in urban spring niches in Bialystok (NE Poland)

Jekatierynczuk‐Rudczyk

Puczko

Żukowska

et al. 2021

Aquat Sci

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Hyporheic zone (HZ) is an interstitial part of groundwater. Complex physical, chemical and biological processes in HZ impact water quality. We hypothesized that groundwater upwelling improves surface water with biogenic compounds in lowland spring niches, and it depends on among others biota communities. The research was conducted in two spring niches in suburbs of Białystok. Interstitial samples were collected with mini-piezometers. In the field, the physical parameters of water were examined, and the micro and macro elements were determined in the laboratory. The analysis of biota included: vascular plants and bryophytes, diatoms, macroinvertebrates and bacteria. The springs studied differed in their richness of organisms, which is associated with varying degrees of abiotic conditions and human transformation. In spring niche with high degree of naturalness were twice less nitrate ions in the surface water than in interstitial water, which indicates the assimilation of nitrate ions by plants growing on the bottom of the niche. Hydrophilic vegetation performs a stabilizing function by assimilating nitrogen compounds and contributing to a variation in nutrients concentration. Groundwater upwelling enrich surface water with DOC and TON. In spring niche No.1 with patches of vegetation, the largest number of macrozoobenthos was recorded. While, the heterogeneous bottom of spring niche No.2 affected the diversity of habitats, and greater biodiversity of benthic fauna. In interstitial waters, there were about twice as few bacteria as in spring waters. Psychrophilic bacteria were present in interstitial waters that influence natural hyporheic processes including circulation of organic matter in the microbiological loop and self-purification of water.

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Characteristics of Ammonia-oxidizing and Denitrifying Bacteria at the River-sediment Interface

Cited by 15 publications

References 28 publications

Diversity of NosZ gene in three municipal wastewater treatment plants located in different geographic regions

Diversity of NosZ gene in three municipal wastewater treatment plants located in different geographic regions

Construction of a New Water Treatment System Based on Material Circulation

Biota communities influence on nutrients circulation in hyporheic zone—a case study in urban spring niches in Bialystok (NE Poland)

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