High-efficient nitrogen removal and its microbiological mechanism of a novel carbon self-sufficient constructed wetland

Jia, Wen; Yang, Yudan; Yang, Liuyan; Gao, Yan

doi:10.1016/j.scitotenv.2021.145901

Cited by 41 publications

(14 citation statements)

References 91 publications

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“…At 20.4°C, 30°C, and 35°C, Bacilli was the only class positively correlated with all three soil types and may be a primary denitrifier in these systems despite their low relative abundance. Jia et al (2021) found Bacillus capable of autotrophic and/or heterotrophic denitrification as well as anammox under a range of C/N conditions in a wetland environment. Yang et al (2020) isolated and characterized four Bacillus strains that could simultaneously utilize nitrate, nitrite, and ammonium under aerobic conditions.…”

Section: Discussionmentioning

confidence: 99%

Impacts of vegetable processing and cheese making effluent on soil microbial functional diversity, community structure, and denitrification potential of land treatment systems

Siemering,

Arriaga,

Cagle

et al. 2024

Water Environment Research

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The cheese making and vegetable processing industries generate immense volumes of high‐nitrogen wastewater that is often treated at rural facilities using land applications. Laboratory incubation results showed denitrification decreased with temperature in industry facility soils but remained high in soils from agricultural sites (75% at 2.1°C). 16S rRNA, phospholipid fatty acid (PLFA), and soil respiration analyses were conducted to investigate potential soil microbiome impacts. Biotic and abiotic system factor correlations showed no clear patterns explaining the divergent denitrification rates. In all three soil types at the phylum level, Actinobacteria, Proteobacteria, and Acidobacteria dominated, whereas at the class level, Nitrososphaeria and Alphaproteobacteria dominated, similar to denitrifying systems such as wetlands, wastewater resource recovery facilities, and wastewater‐irrigated agricultural systems. Results show that potential denitrification drivers vary but lay the foundation to develop a better understanding of the key factors regulating denitrification in land application systems and protect local groundwater supplies.Practitioner Points Incubation study denitrification rates decreased as temperatures decreased, potentially leading to groundwater contamination issues during colder months. The three most dominant phyla for all systems are Actinobacteria, Proteobacteria, and Acidobacteria. The dominant class for all systems is Nitrosphaeria (phyla Crenarchaeota). No correlation patterns between denitrification rates and system biotic and abiotic factors were observed that explained system efficiency differences.

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Section: Discussionmentioning

confidence: 99%

Impacts of vegetable processing and cheese making effluent on soil microbial functional diversity, community structure, and denitrification potential of land treatment systems

Siemering,

Arriaga,

Cagle

et al. 2024

Water Environment Research

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“…This makes it an alternative denitrification pathway at low oxygen levels and low C/N ratios ( Hu et al, 2016 ). At present, almost all reported anammox bacteria belong to the phylum Planctomycetes ( Jia et al, 2021 ; Zhang et al, 2021c ). Regarding nitrate, among the different nitrogenous pollutants, nitrate nitrogen is more likely to leach and eventually deteriorate water quality ( Li et al, 2021b ).…”

Section: Functional Microorganisms In Nitrogen Removalmentioning

confidence: 99%

“…On the contrary, at low concentrations of nitrogen and phosphorus, although the values of both Chao1 and ACE indexes were higher, the data were more scattered. This may be due to the dominance of other influencing factors, such as C/N ratio ( Jia et al, 2021 ) and substrate type ( Ajibade et al, 2021 ).…”

Section: Effects Of Nitrogen and Phosphorus On Alpha Diversitymentioning

confidence: 99%

“…Regarding the effect on diversity, although the median of heavy metals can be high, the data are scattered, with a relatively large gap between the maximum and the minimum values. The occurrence of low values is easy to understand because heavy metals screen and selectively enrich microbial communities ( Jia et al, 2021 ; Xiao et al, 2021 ), and most studies on heavy metals select microorganisms isolated from plant roots or screened from wastewater with high concentrations of heavy metals as functional microorganisms, resulting in the formation of dominant populations and in a lower diversity index. The high values can be explained by the microbial community being under pressure from heavy metals and the species within the community all evolving towards high heavy metal resistance ( Yu et al, 2020 ).…”

Section: Effects Of Heavy Metals On Alpha Diversitymentioning

confidence: 99%

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A Review on Microorganisms in Constructed Wetlands for Typical Pollutant Removal: Species, Function, and Diversity

Wang

Long

et al. 2022

Front. Microbiol.

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Constructed wetlands (CWs) have been proven as a reliable alternative to traditional wastewater treatment technologies. Microorganisms in CWs, as an important component, play a key role in processes such as pollutant degradation and nutrient transformation. Therefore, an in-depth analysis of the community structure and diversity of microorganisms, especially for functional microorganisms, in CWs is important to understand its performance patterns and explore optimized strategies. With advances in molecular biotechnology, it is now possible to analyze and study microbial communities and species composition in complex environments. This review performed bibliometric analysis of microbial studies in CWs to evaluate research trends and identify the most studied pollutants. On this basis, the main functional microorganisms of CWs involved in the removal of these pollutants are summarized, and the effects of these pollutants on microbial diversity are investigated. The result showed that the main phylum involved in functional microorganisms in CWs include Proteobacteria, Bacteroidetes, Actinobacteria and Firmicutes. These functional microorganisms can remove pollutants from CWs by catalyzing chemical reactions, biodegradation, biosorption, and supporting plant growth, etc. Regarding microbial alpha diversity, heavy metals and high concentrations of nitrogen and phosphorus significantly reduce microbial richness and diversity, whereas antibiotics can cause large fluctuations in alpha diversity. Overall, this review can provide new ideas and directions for the research of microorganisms in CWs.

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“…Wetlands are among the most vibrant ecosystems in the world ( Kumwimba et al., 2021 ) and are a functioning landscape ( Qu et al., 2022 ) and water purification system ( Wang et al., 2022 ). At present, the purification function of wetlands has received extensive attention, and a number of constructed wetlands have been built to deal with sewage ( Jia et al., 2021 ; Wang et al., 2021 ). As a key factor of wetlands, plants are always selected by evaluating their purifying efficiency ( Qiao et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Substance accumulation of a wetland plant, Leersia japonica, during senescence in the Yihe and Shuhe River Basin, North China

et al. 2022

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Leersia japonica is a perennial Gramineae grass that is dominant in shallow wetlands of the Yihe and Shuhe River Basin, North China. Previous studies have shown that L. japonica recovers early (March), tillers strongly, and has an excellent ability to purify sewage in spring. This early revival might play a vital role in water purification function; however, whether the plant benefits from the physiological activities during senescence remains unclear. Therefore, in this study, an experiment was conducted during the winter of 2016 and in the following spring. Morphology (height, biomass, root morphology), physiology (root vitality, malondialdehyde [MDA], superoxide dismutase [SOD]), substance contents (soluble sugar, soluble protein) and substance transportation (activity of enzymes for transportation and energy supply) were determined during weeks 0, 2, 4, 6, and 8 of the senescence stage (October 11, 2016); as well as substance contents and bud increments during days 0,7, 14, 21, 31 and 41 of the revival period (February 22, 2017). The results revealed that (1) the root biomass of L. japonica increased significantly during senescence, even after the leaves withered. (2) The root diameter of L. japonica decreased significantly, while root weight per volume and root superficial area per volume increased significantly during senescence. The root vitality was relatively stable in winter, especially for root absorption area per volume. (3) No significant difference was observed in membrane stability of stems, rhizomes and roots of L. japonica in winter, with the MDA content remaining stable and SOD activity increasing significantly during senescence. (4) The soluble sugar content of all tissues of L. japonica increased sharply during senescence; while it decreased significantly in spring, especially for buds. (5) The enzymes for substance metabolism responded differently, with activities of H+-ATPase and pyruvate decarboxylase (PDC) decreasing, and alcohol dehydrogenase (ADH) increasing. Therefore, L. japonica has active morphological adaptation of roots, physiological regulation, and massive substance accumulation during senescence stage. The special life-history trait ensures L. japonica survival in winter and revival in early spring, which makes it being an excellent plant for purifying sewage in spring.

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High-efficient nitrogen removal and its microbiological mechanism of a novel carbon self-sufficient constructed wetland

Cited by 41 publications

References 91 publications

Impacts of vegetable processing and cheese making effluent on soil microbial functional diversity, community structure, and denitrification potential of land treatment systems

Impacts of vegetable processing and cheese making effluent on soil microbial functional diversity, community structure, and denitrification potential of land treatment systems

A Review on Microorganisms in Constructed Wetlands for Typical Pollutant Removal: Species, Function, and Diversity

Substance accumulation of a wetland plant, Leersia japonica, during senescence in the Yihe and Shuhe River Basin, North China

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