4.8 Article

Efficient nitrogen removal of a novel Pseudomonas chengduensis strain BF6 mainly through assimilation in the recirculating aquaculture systems

Related references

Note: Only part of the references are listed.
Article Environmental Sciences

Exploring the PAHs dissipation and indigenous bacteria response in soil amended with two different microbial inoculants

Beibei Wang et al.

Summary: This study investigated the bioremediation of PAHs in soil using different microbial inoculants prepared with Paracoccus aminovorans HPD-2 and the carrier humic acid (HA) or montmorillonite (Mont). The results showed that the greatest removal of PAHs was observed in microcosms with 0.2% HA inoculant or 2% Mont inoculant. Bacterial community analysis revealed that the survival of Paracoccus aminovorans was enhanced in the Mont inoculant treatments compared to the HA inoculant treatments. Furthermore, the treatments containing Mont inoculant had a greater diversity of PAH-degrading bacterial genera compared to the treatments containing HA inoculant.

SCIENCE OF THE TOTAL ENVIRONMENT (2023)

Article Engineering, Environmental

Immobilized denitrifying bacteria on modified oyster shell as biofilter carriers enhance nitrogen removal

Mengmeng Yi et al.

Summary: In this study, modified oyster shell (OS)-immobilizing denitrifying bacteria were used as biocarriers in biofilters to enhance nitrogen removal efficiency. The calcined OS at different temperatures showed enhanced surface area and microbe-immobilizing ability. After immobilizing specific bacteria onto the OS, the average TN removal efficiencies reached 50.25% and 61.50% for OS400-P and OS600-P, respectively. The dominant microbe in the biofilters changed to Pseudomonas, which showed significant correlation with NO3- -N + NO2- -N and TN removal.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2023)

Article Fisheries

Effects of ammonia nitrogen stress on the blood cell immunity and liver antioxidant function of Sepia pharaonis

Yonghui Chai et al.

Summary: The study investigated the toxicity effects of ammonia nitrogen on cuttlefish Sepia pharaonis, finding significant impacts on blood cell immunity, respiratory burst activities, phagocytosis rate, and antioxidant function. Exposure to low or high concentrations of ammonia nitrogen led to increased apoptotic blood cells, respiratory burst activities, and MDA content, while decreasing phagocytosis, SOD, and CAT activity. These results suggest that ammonia nitrogen stress can disrupt immune and antioxidant systems in cuttlefish.

AQUACULTURE (2022)

Article Engineering, Environmental

Insights into nitrogen removal from seawater-based wastewater through marine anammox bacteria under ampicillin stress: Microbial community evolution and genetic response

Jin Li et al.

Summary: This study investigated the effect of AMP on MAB for the first time, and found that the nitrogen removal capacity of MAB decreased with increasing AMP dosage. The research on microbial community evolution and genetic response indicated that AMP dosing significantly promoted microbial community evolution and genetic response.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Review Biotechnology & Applied Microbiology

An insight on microbial degradation of benzo[a]pyrene: current status and advances in research

Arjita Punetha et al.

Summary: Benzo[a]pyrene (BaP), a high molecular weight polycyclic aromatic hydrocarbon, is formed from incomplete combustion of organic substances. It can bind to DNA and cause cancer. Removing BaP from the environment is essential, but it is a complex and tedious process due to its recalcitrant nature. Although physical and chemical technologies for BaP degradation have been developed, they are neither cost-effective nor environmentally friendly. Microbial degradation of BaP has gained attention due to the high microbial diversity and potential for sustainable degradation. However, bio-availability and soil properties limit microbial degradation. Bio-augmentation and bio-stimulation have been used to enhance BaP degradation, and advanced technologies like omics and nano-technology show promise for future microbial degradation of BaP and related compounds.

WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY (2022)

Article Biochemistry & Molecular Biology

Aerobic biocathodes with potential regulation for ammonia oxidation with concomitant cathodic oxygen reduction and their microbial communities

Heng Wu et al.

Summary: Aerobic biocathodes can simultaneously perform traditional nitrification and cathode oxygen reduction, and different electrode potentials can regulate the ammonia oxidation rate. High-throughput sequencing revealed the dominant nitrogen removal genera in the biocathode and their association with aeration rate and electrode potential. The amoC and hao genes responded to aeration and electrode potential regulation, with-0.2 V being more suitable for promoting the denitrification process under low-aeration conditions.

BIOELECTROCHEMISTRY (2022)

Editorial Material Multidisciplinary Sciences

Bacterial species rarely work together

Jacob D. Palmer et al.

SCIENCE (2022)

Article Engineering, Environmental

Exerting applied voltage promotes microbial activity of marine anammox bacteria for nitrogen removal in saline wastewater treatment

Zhi Hu et al.

Summary: This study demonstrates that the application of voltage in a bioelectrochemical system can effectively promote the activity of marine anammox bacteria in saline wastewater treatment, leading to an increase in nitrogen removal rate. The optimal voltage was found to be 1.5 V, which resulted in a 27.45% higher total nitrogen removal rate compared to without applied voltage. The study also revealed that higher voltage (>2.0 V) had a negative effect on MAB activity, but the bioactivity was recoverable after removing the high voltage.

WATER RESEARCH (2022)

Article Environmental Sciences

A divided flow aerobic-anoxic baffled reactor for simultaneous nitrification-denitrification of domestic wastewater

Hossam Awad et al.

Summary: A novel reactor design was developed for efficient denitrification of domestic wastewater without external carbon source. The optimal operating parameters were determined using response surface methodology, and the addition of biomass support media improved denitrification. The aerobic-anoxic system demonstrated high stability against changes in hydraulic retention time and COD/N ratio. Microbial analysis revealed the presence of dominant denitrifying bacteria in the anoxic zone.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

Review Agricultural Engineering

Simultaneous nitrification-denitrification in biofilm systems for wastewater treatment: Key factors, potential routes, and engineered applications

Francesco Di Capua et al.

Summary: Simultaneous nitrification-denitrification is a bioprocess that efficiently removes ammonia nitrogen through sequential redox reactions. It can be applied in biofilm systems and recent advances have shown the potential to reduce carbon and energy consumption while removing both nitrogen and phosphorus.

BIORESOURCE TECHNOLOGY (2022)

Article Environmental Sciences

Achieving deep autotrophic nitrogen removal in aerated biofilter driven by sponge iron: Performance and mechanism

Jianmin Li et al.

Summary: In this study, the performance of nitrogen removal in a sponge iron biofilter was explored under different hydraulic retention times and gas-water ratios. The results showed that the biofilter achieved high efficiency in ammonia and total inorganic nitrogen removal. The microbial community analysis revealed the importance of Feammox and NDFO reactions in the nitrogen removal process.

ENVIRONMENTAL RESEARCH (2022)

Article Environmental Sciences

Nitrogen removal characteristics and predicted conversion pathways of a heterotrophic nitrification-aerobic denitrification bacterium,Pseudomonas aeruginosaP-1

Ran Wei et al.

Summary: The study revealed that the Pseudomonas aeruginosa (P-1) strain has high removal rates of NH4+ and utilizes both partial and complete nitrification/denitrification pathways. The strain prefers to nitrify NH4+ and only denitrifies NO2- and NO3- when NH4+ is depleted, with N2 as the final gaseous product and minimal NO2- accumulation. Additionally, P-1 can convert various nitrogen compounds under high salinity and high concentrations of heavy metals, making it a potential alternative for inorganic nitrogen removal in practical applications.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021)

Article Agricultural Engineering

Heterotrophic nitrification and aerobic denitrification by a novel Acinetobacter sp. TAC-1 at low temperature and high ammonia nitrogen

Tiantao Zhao et al.

Summary: The novel Acinetobacter sp. TAC-1 strain isolated from swine wastewater showed high efficiency in nitrogen metabolism at low temperatures, indicating potential for practical application in nitrogen removal processes.

BIORESOURCE TECHNOLOGY (2021)

Article Environmental Sciences

Characterization of a novel marine aerobic denitrifier Vibrio spp. AD2 for efficient nitrate reduction without nitrite accumulation

Jilong Ren et al.

Summary: The study found that a salt-tolerant aerobic denitrifier, identified as Vibrio spp. AD2, showed high denitrification performance in removing nitrate nitrogen from polluted water. Nitrogen balance analysis indicated that strain AD2 had a high utilization rate of nitrate nitrogen, demonstrating its crucial role in the denitrification process.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021)

Article Environmental Sciences

Nitrogen removal characteristics of a novel heterotrophic nitrification and aerobic denitrification bacteria, Alcaligenes faecalis strain WT14

Junli Chen et al.

Summary: WT14, a newly isolated strain of Alcaligenes faecalis, showed promising nitrogen removal efficiency, with the ability to efficiently remove ammonium nitrogen under specific environmental conditions and exhibit strong tolerance and rapid multiplication. It also demonstrated high nitrate or nitrite removal capacity when provided as the sole nitrogen source, setting it apart from other Alcaligenes faecalis species. Further studies on the nitrogen removal pathway of WT14 are warranted.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2021)

Review Environmental Sciences

A review of research progress of heterotrophic nitrification and aerobic denitrification microorganisms (HNADMs)

Tao Song et al.

Summary: Traditional nitrogen removal methods rely on autotrophic nitrification and anaerobic denitrification, but heterotrophic nitrification & aerobic denitrification microorganisms (HNADMs) have the potential to simultaneously achieve nitrification, denitrification, and even phosphorus removal. This suggests that HNADMs could be a valuable tool for wastewater pollution removal.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Engineering, Environmental

Nitrogen recovery by a halophilic ammonium-assimilating microbiome: A new strategy for saline wastewater treatment

Mengru Zhang et al.

Summary: In the treatment of high-salinity wastewater, microbial ammonium assimilation provides an efficient method for nitrogen removal and recovery into biomass. By constructing a microbiome, nitrogen can be removed and recovered from wastewater effectively.

WATER RESEARCH (2021)

Article Environmental Sciences

Biological nitrogen removal capability and pathways analysis of a novel low C/N ratio heterotrophic nitrifying and aerobic denitrifying bacterium (Bacillus thuringiensis strain WXN-23)

Na Xu et al.

Summary: A novel heterotrophic nitrification and aerobic denitrification (HNAD) bacteria, Bacillus thuringiensis strain WXN-23, was isolated from husk feed filtrate of a pig farm. It could efficiently remove nitrogen in simulated wastewater, adapt to low C/N ratio conditions, and showed a nitrogen balance efficiency of 63.5% in the form of N-2. The most optimal conditions for total nitrogen removal were shaking speed of 126.89 r/min, C/N ratio of 5.91, temperature of 32.81. C, and pH value of 8.17. The nitrification-denitrification metabolic pathway under aerobic conditions was determined, and strain WXN-23 exhibited high removal efficiencies for TN, NH4+-N, NO3--N and NO2--N in wastewater treatment.

ENVIRONMENTAL RESEARCH (2021)

Article Biotechnology & Applied Microbiology

Isolated heterotrophic nitrifying and aerobic denitrifying bacterium for treating actual refinery wastewater with low C/N ratio

Jie Hu et al.

Summary: Heterotrophic nitrifying and aerobic denitrifying bacteria, such as Pseudomonas mendocina Y7, show promising potential for nitrogen removal in industrial wastewater with low C/N ratio. Strain Y7 significantly improves removal efficiency of NH4+-N and total nitrogen, coexists well with other microorganisms, and maintains highly efficient and steady nitrogen removal in continuous treatment system.

JOURNAL OF BIOSCIENCE AND BIOENGINEERING (2021)

Article Agricultural Engineering

A novel halophilic Exiguobacterium mexicanum strain removes nitrogen from saline wastewater via heterotrophic nitrification and aerobic denitrification

Yuan Cui et al.

Summary: The halophilic bacterium strain SND-01 of Exiguobacterium mexicanum, isolated in this study, shows potential in nitrogen removal in saline wastewater treatment, with a maximum nitrogen removal rate observed under various nitrogen sources and aerobic conditions.

BIORESOURCE TECHNOLOGY (2021)

Article Biotechnology & Applied Microbiology

AidB, a Novel Thermostable N-Acylhomoserine Lactonase from the Bacterium Bosea sp.

Jun-Wei Zhang et al.

APPLIED AND ENVIRONMENTAL MICROBIOLOGY (2019)

Article Microbiology

Pseudomonas chengduensis sp nov., isolated from landfill leachate

Yong Tao et al.

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY (2014)

Article Agricultural Engineering

Waste treatment in recirculating aquaculture systems

Jaap van Rijn

AQUACULTURAL ENGINEERING (2013)

Review Engineering, Environmental

Nitrous Oxide (N2O) Emission from Aquaculture: A Review

Zhen Hu et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2012)

Article Multidisciplinary Sciences

Diversity of Interaction Types and Ecological Community Stability

A. Mougi et al.

SCIENCE (2012)

Letter Biochemical Research Methods

QIIME allows analysis of high-throughput community sequencing data

J. Gregory Caporaso et al.

NATURE METHODS (2010)

Review Biotechnology & Applied Microbiology

Control of carbon and ammonium ratio for simultaneous nitrification and denitrification in a sequencing batch bioreactor

Ying-Chih Chiu et al.

INTERNATIONAL BIODETERIORATION & BIODEGRADATION (2007)