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Dong Z, Ma Y, Yu M, Cai Y, Chen Y, Wu J, Ma F, Hu B. Affinity difference determines the assembly and interaction mode of anammox community reconstructed by siderophores. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165278. [PMID: 37414172 DOI: 10.1016/j.scitotenv.2023.165278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/16/2023] [Accepted: 07/01/2023] [Indexed: 07/08/2023]
Abstract
Anammox community is the core of anammox process. The constancy of the anammox community determines the stability of the anammox process and the ability of withstand environmental impact. Community stability is influenced by the assembly and interaction mode of the community. This study aimed to explore the assembly, interaction mode, and stability of anammox community influenced by two siderophores (enterobactin and putrebactin) specific for Ca. Brocadia and Ca. Kuenenia as produced in our previous research. Siderophores improved the stability of the anammox community, among which vulnerability dropped by 30.02 % and 72.53 % respectively. Enterobactin and putrebactin altered the succession speed and assembly pattern of communities, with a respective increase of 9.77 % and 80.87 % in the deterministic process of anammox community assembly, respectively. Enterobactin and putrebactin reduced the dependence of Ca. Brocadia and Ca. Kuenenia on companion bacteria by 60 items and 27 items respectively. The affinity of different siderophore-Fe with bacterial membrane receptors caused variations in community reconstruction, with Ca. Brocadia and Ca. Kuenenia exhibiting the highest affinity with enterobactin-Fe (-11.4 kcal/mol) and putrebactin-Fe (-9.0 kcal/mol), respectively. This study demonstrated how siderophores can enhance the stability of anammox process by regulating assembly and interaction mode of anammox community, while also revealing the underlying molecular mechanisms.
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Affiliation(s)
- Ziyang Dong
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Yuxin Ma
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Mengwen Yu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Yufei Cai
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Yingluo Chen
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Junwei Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Fang Ma
- State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Baolan Hu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China; Key Laboratory of Environment Remediation and Ecological Health (Zhejiang University), Ministry of Education, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China.
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2
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Dong Z, Yu M, Cai Y, Ma Y, Chen Y, Hu B. Directed regulation of anammox communities based on exogenous siderophores for highly efficient nitrogen removal. WATER RESEARCH 2023; 243:120394. [PMID: 37494745 DOI: 10.1016/j.watres.2023.120394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/28/2023]
Abstract
It is expected that the quicker domestication of anaerobic ammonia oxidation (anammox) communities and the enhancement of their nitrogen transformation capability can be achieved through targeted regulation of anammox communities. Iron cast a vital role in the growth and metabolism of anammox bacteria. Specific siderophores offer promising prospects for the targeted regulation of anammox communities by facilitating the efficient utilization of iron. Two siderophores-enterobactin and putrebactin-exclusively for Ca. Brocadia and Ca. Kuenenia were developed to specifically regulate anammox communities towards different directions, respectively. Anammox communities in the reactors evoluted targetedly towards Ca. Brocadia-dominated communities and Ca. Kuenenia-dominated communities, respectively, leading to a maximum increase in community nitrogen removal capacity by 84.64±0.55% and 210.26±0.57%, respectively, under different nitrogen concentrations. It was indicated that siderophores could regulate anammox communities by redistributing iron resources in a targeted manner based on the analyses of transcriptome and proteome. This study provides novel insights into the rational selection and utilization of exogenous siderophores as an effective implement to manipulate anammox communities and create communities with high nitrogen removal ability fleetly.
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Affiliation(s)
- Ziyang Dong
- Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang, China
| | - Mengwen Yu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yufei Cai
- Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yuxin Ma
- Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yingluo Chen
- Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang, China
| | - Baolan Hu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang, China; Key Laboratory of Water Pollution Control and Environmental Safety, Zhejiang, China; Key Laboratory of Environment Remediation and Ecological Health (Zhejiang University), Ministry of Education, Hangzhou 310058, China.
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3
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Zhao W, Wang Y, Bai M. Nitrogen removal enhancement reinforced by nitritation/anammox in an anaerobic/oxic/anoxic system with integrated fixed biofilm activated sludge. Bioprocess Biosyst Eng 2023:10.1007/s00449-023-02885-2. [PMID: 37217630 DOI: 10.1007/s00449-023-02885-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/16/2023] [Indexed: 05/24/2023]
Abstract
The enhancement of nitrogen removal was reinforced by nitritation/anammox in an anaerobic/oxic/anoxic (AOA) system of integrated fixed biofilm activated sludge. Nitritation was first attained by the method of free nitrous acid (FNA) inhibition with ammonia residues, and anaerobic ammonia oxidizing bacteria (AnAOB) were then added into the system, which enabled the occurrence of nitritation coupled with anaerobic ammonia oxidation (anammox). The results indicated that nitrogen removal was enhanced by the nitritation/anammox pathway with an efficiency of 88.9%. A microbial analysis showed that the ammonia oxidizing bacterium (AOB) Nitrosomonas was enriched on the biofilm (5.98%) and in the activated sludge (2.40%), and the AnAOB Candidatus Brocadia was detected on the biofilm with a proportion of 0.27%. Nitritation/anammox was attained and maintained due to the accumulation of functional bacteria.
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Affiliation(s)
- Weihua Zhao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Huangdao District, Qingdao, 266525, People's Republic of China.
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai, 264209, People's Republic of China.
| | - Yanyan Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Huangdao District, Qingdao, 266525, People's Republic of China
| | - Meng Bai
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Huangdao District, Qingdao, 266525, People's Republic of China
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4
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Chen H, Liu K, Yang E, Chen J, Gu Y, Wu S, Yang M, Wang H, Wang D, Li H. A critical review on microbial ecology in the novel biological nitrogen removal process: Dynamic balance of complex functional microbes for nitrogen removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159462. [PMID: 36257429 DOI: 10.1016/j.scitotenv.2022.159462] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/04/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
The novel biological nitrogen removal process has been extensively studied for its high nitrogen removal efficiency, energy efficiency, and greenness. A successful novel biological nitrogen removal process has a stable microecological equilibrium and benign interactions between the various functional bacteria. However, changes in the external environment can easily disrupt the dynamic balance of the microecology and affect the activity of functional bacteria in the novel biological nitrogen removal process. Therefore, this review focuses on the microecology in existing the novel biological nitrogen removal process, including the growth characteristics of functional microorganisms and their interactions, together with the effects of different influencing factors on the evolution of microbial communities. This provides ideas for achieving a stable dynamic balance of the microecology in a novel biological nitrogen removal process. Furthermore, to investigate deeply the mechanisms of microbial interactions in novel biological nitrogen removal process, this review also focuses on the influence of quorum sensing (QS) systems on nitrogen removal microbes, regulated by which bacteria secrete acyl homoserine lactones (AHLs) as signaling molecules to regulate microbial ecology in the novel biological nitrogen removal process. However, the mechanisms of action of AHLs on the regulation of functional bacteria have not been fully determined and the composition of QS system circuits requires further investigation. Meanwhile, it is necessary to further apply molecular analysis techniques and the theory of systems ecology in the future to enhance the exploration of microbial species and ecological niches, providing a deeper scientific basis for the development of a novel biological nitrogen removal process.
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Affiliation(s)
- Hong Chen
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410004, China; Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Ke Liu
- China Machinery International Engineering Design & Research Institute Co., Ltd, Changsha 410007, China
| | - Enzhe Yang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410004, China
| | - Jing Chen
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410004, China
| | - Yanling Gu
- School of Materials Science and Engineering, Changsha University of Science & Technology, Changsha 410004, China
| | - Sha Wu
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410004, China.
| | - Min Yang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410004, China
| | - Hong Wang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410004, China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha 410083, China.
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Yang JH, Huang DQ, Geng YC, Ling YR, Fan NS, Jin RC. Role of quorum sensing-based regulation in development of anaerobic ammonium oxidation process. BIORESOURCE TECHNOLOGY 2023; 367:128228. [PMID: 36332868 DOI: 10.1016/j.biortech.2022.128228] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Shortage of anaerobic ammonium oxidation (anammox) sludge greatly limits the extensive full-scale application of anammox-based processes. Although numerous start-up strategies have been proposed, the interaction among microbial consortia and corresponding mechanism during the process development remain unknown. In this study, three reactors were established based on different seed sludges. After 27 days, the anammox process inoculated with anammox granules and activated sludge (1:5) was firstly achieved, and the highest nitrogen removal rate was 1.17 kg N m-3 d-1. Correspondingly, the anammox activity and abundances of related functional genes increased. Notably, the dominant anammox bacteria shifted from Candidatus Kuenenia to Candidatus Brocadia. Metagenomic analysis indicated that quorum sensing-based regulation mainly contributed to the proliferation and accumulation of anammox bacteria. This work provides an insight into the quorum sensing (QS)-regulated microbial interactions in the anammox and activated sludge consortia during the process development.
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Affiliation(s)
- Jun-Hui Yang
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Dong-Qi Huang
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yin-Ce Geng
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yi-Rong Ling
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Nian-Si Fan
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; School of Engineering, Hangzhou Normal University, Hangzhou 310018, China.
| | - Ren-Cun Jin
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; School of Engineering, Hangzhou Normal University, Hangzhou 310018, China
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6
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Lu Y, Natarajan G, Nguyen TQN, Thi SS, Arumugam K, Seviour T, Williams RBH, Wuertz S, Law Y. Controlling anammox speciation and biofilm attachment strategy using N-biotransformation intermediates and organic carbon levels. Sci Rep 2022; 12:21720. [PMID: 36522527 PMCID: PMC9755228 DOI: 10.1038/s41598-022-26069-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Conventional nitrogen removal in wastewater treatment requires a high oxygen and energy input. Anaerobic ammonium oxidation (anammox), the single-step conversion of ammonium and nitrite to nitrogen gas, is a more energy and cost effective alternative applied extensively to sidestream wastewater treatment. It would also be a mainstream treatment option if species diversity and physiology were better understood. Anammox bacteria were enriched up to 80%, 90% and 50% relative abundance, from a single inoculum, under standard enrichment conditions with either stepwise-nitrite and ammonia concentration increases (R1), nitric oxide supplementation (R2), or complex organic carbon from mainstream wastewater (R3), respectively. Candidatus Brocadia caroliniensis predominated in all reactors, but a shift towards Ca. Brocadia sinica occurred at ammonium and nitrite concentrations > 270 mg NH4-N L-1 and 340 mg NO2-N L-1 respectively. With NO present, heterotrophic growth was inhibited, and Ca. Jettenia coexisted with Ca. B. caroliniensis before diminishing as nitrite increased to 160 mg NO2-N L-1. Organic carbon supplementation led to the emergence of heterotrophic communities that coevolved with Ca. B. caroliniensis. Ca. B. caroliniensis and Ca. Jettenia preferentially formed biofilms on surfaces, whereas Ca. Brocadia sinica formed granules in suspension. Our results indicate that multiple anammox bacteria species co-exist and occupy sub-niches in anammox reactors, and that the dominant population can be reversibly shifted by, for example, changing nitrogen load (i.e. high nitrite concentration favors Ca. Brocadia caroliniensis). Speciation has implications for wastewater process design, where the optimum cell immobilization strategy (i.e. carriers vs granules) depends on which species dominates.
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Affiliation(s)
- Yang Lu
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore ,grid.1003.20000 0000 9320 7537Present Address: The Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072 Australia
| | - Gayathri Natarajan
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore
| | - Thi Quynh Ngoc Nguyen
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore ,grid.185448.40000 0004 0637 0221Present Address: Agency for Science, Technology and Research, Singapore, 138632 Singapore
| | - Sara Swa Thi
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore
| | - Krithika Arumugam
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore
| | - Thomas Seviour
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore ,grid.7048.b0000 0001 1956 2722Centre for Water Technology (WATEC) & Department of Biological and Chemical Engineering, Aarhus University, Universitetsbyen 36, 8000 Aarhus C, Denmark
| | - Rohan B. H. Williams
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, National University of Singapore, Singapore, 119077 Singapore
| | - Stefan Wuertz
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore ,grid.59025.3b0000 0001 2224 0361School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, 639798 Singapore
| | - Yingyu Law
- grid.484638.50000 0004 7703 9448Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551 Singapore
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7
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Hong S, De Clippeleir H, Goel R. Response of mixed community anammox biomass against sulfide, nitrite and recalcitrant carbon in terms of inhibition coefficients and functional gene expressions. CHEMOSPHERE 2022; 308:136232. [PMID: 36055592 DOI: 10.1016/j.chemosphere.2022.136232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Anaerobic ammonium oxidation (anammox) has evolved as a carbon and energy-efficient nitrogen management bioprocess. However, factors such as inhibitory chemicals still challenge the easy operation of this powerful bioprocess. This research systematically evaluated the inhibition kinetics of sulfide, nitrite, and recalcitrant carbon under a genomic framework. The inhibition at the substrate and genetic levels of sulfide, nitrite and recalcitrant carbon on anammox activity was studied using batch tests. Nitrite inhibition of anammox followed substrate inhibition and was best described by the Aiba model with an inhibition coefficient [Formula: see text] of 324.04 mg N/L. Hydrazine synthase (hzsB) gene (anammox biomarker) expression was increased over time when incubated with nitrite up to 400 mg N/L. However, despite having the highest specific nitrite removal (SNR), the expression of hzsB at 100 and 200 mg N/L of nitrite was more muted than in most other samples with lower SNRs. Sulfide severely inhibited anammox activities. The inhibition was fitted with a Monod-based model with a [Formula: see text] of 4.39 mg S/L. At a sulfide concentration of 5 mg/L, the hzsB expression decreased throughout the experiment from its original value at he beginning. Recalcitrant carbon of filtrate from thermal hydrolysis process pretreated anaerobic digester had a minimal effect on maximum specific anammox activity (MSAA), and thus the value of the inhibition coefficient could not be calculated. At the same time, its hzsB expression profile was similar to that in the control. Resiliency and recovery tests indicated that the inhibition of nitrite (up to 400 mg N/L) and recalcitrant carbon (in 100% filtrate) were reversible. About 32% of MSAA was recovered after repeated exposures to sulfide at 2.5 mg/L, while at 5 mg/L, the inhibition was irreversible. Findings from this study will be helpful for the successful design and implementation of anammox in full-scale applications.
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Affiliation(s)
- Soklida Hong
- Civil and Environmental Engineering Department, University of Utah, 110 S Central Campus Drive, Salt Lake City, UT, 84112, United States.
| | | | - Ramesh Goel
- Civil and Environmental Engineering Department, University of Utah, 110 S Central Campus Drive, Salt Lake City, UT, 84112, United States.
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Nguyen DH, Tran P T, Tran DM, Masashi H, Takashi Y, Nguyen HL. Development of a post-treatment system using a downflow hanging sponge reactor - an upflow anaerobic reactor for natural rubber processing wastewater treatment. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2022; 57:977-986. [PMID: 36263701 DOI: 10.1080/10934529.2022.2134682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/05/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to evaluate the nitrogen removal of a post-treatment system for natural rubber processing wastewater (NRPW) under low chemical oxygen demand to total nitrogen (COD/TN) ratios without any supplemental external carbon source. The system including a downflow hanging sponge (DHS) reactor and an upflow anaerobic reactor (UAR) was operated in two phases. In phase 1 (day 0-102), under a nitrogen loading rate (NLR) of 0.23 ± 0.06 kgN m-3 d-1 and COD/TN ratio of 0.63 ± 0.47, the DHS-UAR system removed 82.5 ± 11.8% and 83.9 ± 7.6% of TN and ammonium concentrations, respectively. In phase 2 (day 103-229), higher COD/TN ratio of 1.96 ± 0.28 was applied to remove increasing NLRs. At the highest NLR of 0.51 kgN m-3 d-1, the system achieved TN and ammonium removal efficiencies of 93.2% and 93.7%, respectively. Nitrogen profiles and the 16S rRNA high-throughput sequencing data suggested that ammonium, a major nitrogen compound in NRPW, was utilized by nitrifying and ammonium assimilation bacteria in DHS, then removed by heterotrophic denitrifying and anammox bacteria in the UAR. The predominance of Acinetobacter detected in both reactors suggested its essential role for the nitrogen conversion.
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Affiliation(s)
- Dung Hoang Nguyen
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Thao Tran P
- Regional Environment Conservation Division, National Institute for Environmental Studies, Tsukuba, Japan
| | - Duc Minh Tran
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Hatamoto Masashi
- Department of Civil and Environmental Engineering, Nagaoka University of Technology, Nagaoka, Japan
| | - Yamaguchi Takashi
- Department of Science of Technology Innovation, Nagaoka University of Technology, Nagaoka, Japan
| | - Huong Lan Nguyen
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, Hanoi, Vietnam
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Jiang C, Tang X, Feng F, Zhao J, Liu Z, Qu C, Adhikary KK, Wu D, Tang CJ. Distinct membrane fouling characteristics of anammox MBR with low NO 2--N/NH 4+-N ratio. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 817:152994. [PMID: 35016942 DOI: 10.1016/j.scitotenv.2022.152994] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
The bacterial growth and death, and extracellular polymeric substances (EPS) and soluble microbial products (SMP) in aerobic membrane bioreactor (MBR) cause severe membrane fouling. Anammox bacteria grow slowly but produce much EPS and SMP. Therefore, the membrane fouling characteristic of anammox MBR is still indistinct. A NO2--N/NH4+-N < 1.0 into in the influent of an anammox MBR applies to investigate: 1) the slowest growing anammox bacteria (Candidatus Jettenia) could be enriched or not; 2) its membrane fouling characteristic. Results showed that Candidatus Jettenia successfully accumulated from 0.01% to 26.19%. The fouling characteristic of anammox MBR was entirely different from other MBRs. Firstly, obvious low transmembrane pressure (<4 KPa, 125 days) and low amount of foulants (0.22 gVSS/m2) might result from N2 production and the slow-growing Candidatus Jettenia. Secondly, the analysis of the components of membrane foulants indicated that polysaccharides of SMP in the gel layer and pore foulants were the key factors affecting membrane fouling. Finally, the large particle size of foulants (200 μm) might be caused by anammox bacteria living inside the foulants under anaerobic conditions. This study provides systematic insights into membrane characteristics of anammox MBR and a basis for the enrichment of anammox bacteria by MBR.
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Affiliation(s)
- Chukuan Jiang
- School of Metallurgy and Environment, National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, China
| | - Xi Tang
- School of Metallurgy and Environment, National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, China
| | - Fan Feng
- School of Metallurgy and Environment, National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, China
| | - Jiangwei Zhao
- School of Metallurgy and Environment, National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, China
| | - Zhigong Liu
- School of Metallurgy and Environment, National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, China
| | - Caiyan Qu
- School of Metallurgy and Environment, National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, China
| | - Keshab K Adhikary
- Ghent University Global Campus, Ghent University, Incheon, Republic of Korea
| | - Di Wu
- Ghent University Global Campus, Ghent University, Incheon, Republic of Korea
| | - Chong-Jian Tang
- School of Metallurgy and Environment, National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, China.
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10
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Wang WY, Wang R, Abbas G, Wang G, Zhao ZG, Deng LW, Wang L. Aggregation enhances the activity and growth rate of anammox bacteria and its mechanisms. CHEMOSPHERE 2022; 291:132907. [PMID: 34780744 DOI: 10.1016/j.chemosphere.2021.132907] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 11/08/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
The aggregation of anaerobic ammonium oxidation (anammox) bacteria is important for the start-up and biomass retention of anammox processes. However, it is unclear whether it is beneficial to the activity, growth and reproduction of anammox bacteria. In this study, four reactor systems were developed to explore the effects of aggregation on anammox activity, growth and reproduction, after excluding the contribution of aggregation to sludge settling and retention. Results demonstrated that (i) compared with free-living planktonic bacteria, the aggregated bacteria had a higher volumetric nitrogen removal rate (0.75 kg-N/(m³·d)) and specific nitrogen removal activity (1.097 kg-N/VSS/d). And after 67 days cultivation, it had the higher sludge concentration and relative abundance (92.4%); (ii) compared with acidic polysaccharides and α-d-glucopyranose polysaccharides, β-d-glucopyranose polysaccharide play more essential roles of anammox aggregation; (iii) norspermidine triggered the secretion of α-d-glucopyranose polysaccharides to combat the toxicity, and inhibited biomass growth rate; (iv) immobilization in polyvinyl alcohol (10%) or sodium alginate (2%) gel beads was better than sodium alginate-chitosan gel beads and norspermidine (biofilm inhibitor) for the cultivation of free-living planktonic anammox bacteria. This is the first comparative study of three methods for cultivating free-living anammox bacteria. In conclusion, we found that the aggregation of anammox sludge not only facilitates biomass retention but also enhances the bioactivity, relative abundance, growth, and reproduction rate of anammox bacteria. The work is helpful to understand the formation of anammox granular sludge and contribute to the fast start-up and stable operation in anammox application.
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Affiliation(s)
- Wen-Yan Wang
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China.
| | - Ru Wang
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China.
| | - Ghulam Abbas
- Department of Chemical Engineering, University of Gujrat, Gujrat, 50700, Pakistan.
| | - Gang Wang
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China.
| | - Zhi-Guo Zhao
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; China National Heavy Machinery Research Institute. Co., Ltd., Xi'an, 710055, PR China.
| | - Liang-Wei Deng
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, PR China.
| | - Lan Wang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, PR China.
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11
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Liu L, Lv AP, Narsing Rao MP, Ming YZ, Salam N, Li MM, Liu ZT, Zhang XT, Zhang JY, Xian WD, Jiao JY, Li WJ. Diversity and Distribution of Anaerobic Ammonium Oxidation Bacteria in Hot Springs of Conghua, China. Front Microbiol 2022; 12:739234. [PMID: 35145488 PMCID: PMC8822059 DOI: 10.3389/fmicb.2021.739234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 12/07/2021] [Indexed: 11/13/2022] Open
Abstract
Anaerobic ammonium oxidation (anammox) is an important process of the nitrogen cycle, and the anammox bacteria have been studied in a wide variety of environments. However, the distribution, diversity, and abundance of anammox bacteria in hot springs remain enigmatic. In this study, the anammox process was firstly investigated in hot springs of Conghua, China. Anammox-like bacterial sequences that closely affiliated to “Candidatus Brocadia,” “Candidatus Kuenenia,” “Candidatus Scalindua,” “Candidatus Anammoxoglobus,” and “Candidatus Jettenia” were detected. Several operational taxonomic units (OTUs) from this study shared low sequence identities to the 16S rRNA gene of the known anammox bacteria, suggesting that they might be representing putative novel anammox bacteria. A quantitative PCR analysis of anammox-specific 16S rRNA gene confirmed that the abundance of anammox bacteria ranged from 1.60 × 104 to 1.20 × 107 copies L–1. Nitrate was a key environmental factor defining the geographical distribution of the anammox bacterial community in the hot spring ecosystem. Dissolved inorganic carbon had a significant influence on anammox bacterial biodiversity. Our findings for the first time revealed that the diverse anammox bacteria, including putative novel anammox bacterial candidates, were present in Conghua hot spring, which extended the existence of anammox bacteria to the hot springs in China and expands our knowledge of the biogeography of anammox bacteria. This work filled up the research lacuna of anammox bacteria in Chinese hot spring habitat and would guide for enrichment strategies of anammox bacteria of Conghua hot springs.
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Affiliation(s)
- Lan Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ai-Ping Lv
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Manik Prabhu Narsing Rao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yu-Zhen Ming
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Nimaichand Salam
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Meng-Meng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ze-Tao Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiao-Tong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jing-Yi Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wen-Dong Xian
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jian-Yu Jiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Jian-Yu Jiao,
| | - Wen-Jun Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- *Correspondence: Wen-Jun Li,
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12
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Zhu J, Yan X, Zhou L, Li N, Liao C, Wang X. Insight of bacteria and archaea in Feammox community enriched from different soils. ENVIRONMENTAL RESEARCH 2022; 203:111802. [PMID: 34343555 DOI: 10.1016/j.envres.2021.111802] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
Anaerobic ammonium oxidation coupled to Fe(III) reduction, known as Feammox, is a newly discovered nitrogen-cycling process, which serves an important role in the pathways of nitrogen loss in the environment. However, the specific types of microorganisms involved in Feammox currently remain unclear. In this study, we selected two groups of soil samples (paddy and mine), from considerably different habitats in South China, to acclimate Feammox colonies. The Paddy Group had a shorter lag period than the Mine Group, while the ammonium transformation rate was nearly equal in both groups in the mature period. The emergence of the Feammox activity was found to be associated with the increased abundance of iron-reducing bacteria, especially Clostridium_sensu_stricto_12, Desulfitobacterium, Thermoanaerobaculum, Anaeromyxobacter and Geobacter. Ammonium oxidizing archaea and methanogens were dominant among the known archaea. These findings extend our knowledge of the microbial community composition of the potential Feammox microbes from soils under different environmental conditions, which broadens our understanding of this important Fe/N transformation process.
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Affiliation(s)
- Jiaxuan Zhu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin, 300350, China
| | - Xuejun Yan
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin, 300350, China
| | - Lean Zhou
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Nan Li
- School of Environmental Science and Engineering, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, 300072, China
| | - Chengmei Liao
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin, 300350, China.
| | - Xin Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin, 300350, China.
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13
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Lodha T, Narvekar S, Karodi P. Classification of uncultivated anammox bacteria and Candidatus Uabimicrobium into new classes and provisional nomenclature as Candidatus Brocadiia classis nov. and Candidatus Uabimicrobiia classis nov. of the phylum Planctomycetes and novel family Candidatus Scalinduaceae fam. nov to accommodate the genus Candidatus Scalindua. Syst Appl Microbiol 2021; 44:126272. [PMID: 34735804 DOI: 10.1016/j.syapm.2021.126272] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 11/26/2022]
Abstract
The phylum Planctomycetes is metabolically unique group of bacteria divided in two classes Planctomycetia and Phycisphaerae. Anaerobic ammonia-oxidizing (anammox) bacteria are the uncultured representatives of the phylum Planctomycetes. Anammox bacterial genera are placed in the family Candidatus (Ca.) Brocadiaceae of the order Ca. Brocadiales, assigned to the class Planctomycetia. Phylogenetic analysis, showed that the anammox bacteria and Ca. Uabimicrobium form a divergent clade from the rest of the cultured representatives of the phylum Planctomycetes. The phylogenetic study, pairwise distance and Average Amino acid Identity (AAI) showed that anammox bacteria don't belong to the classes Planctomycetia and Phycisphaerae. Anammox bacteria and Ca. Uabimicrobium form a deep-branching third clade in the phylogenetic analysis indicating that it is the most ancient third class within the phylum Planctomycetes. Phenotypic characters also separate anammox bacteria from classes Planctomycetia and Phycisphaerae. Therefore, based on phenotypic, phylogenetic, pairwise distance, AAI and phylogenomic analysis we propose a novel class Ca. Brocadiia to accommodate the order Ca. Brocadiales of anammox bacteria except Ca. Anammoximicrobium. Genera Ca. Jettenia, Ca. Anammoxoglobus, Ca. Kuenenia and Ca. Brocadia show their phylogenetic affiliation to the family Ca. Brocadiaceae. However, Ca. Scalindua showed a distant relationship with the family Ca. Brocadiaceae. Therefore, we suggest the exclusion of the genus Ca. Scalindua from the family Ca. Brocadiaceae; and propose its inclusion under a novel family with a provisional name as Ca. Scalinduaceae fam. nov. Similarly, Ca. Uabimicrobium amporphum showed distinct phylogenetic affiliation, therefore we propose a novel class Ca. Uabimicrobiia classis nov. to accommodate the genus Ca. Uabimicrobium.
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Affiliation(s)
- Tushar Lodha
- National Centre for Microbial Resource, National Centre for Cell Science, Pune 411021, India.
| | - Simran Narvekar
- National Centre for Microbial Resource, National Centre for Cell Science, Pune 411021, India
| | - Prachi Karodi
- National Centre for Microbial Resource, National Centre for Cell Science, Pune 411021, India
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14
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Chen H, Tu Z, Wu S, Yu G, Du C, Wang H, Yang E, Zhou L, Deng B, Wang D, Li H. Recent advances in partial denitrification-anaerobic ammonium oxidation process for mainstream municipal wastewater treatment. CHEMOSPHERE 2021; 278:130436. [PMID: 33839386 DOI: 10.1016/j.chemosphere.2021.130436] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 05/05/2023]
Abstract
To solve the bottleneck of the unstable accumulation of nitrite in the partial nitrification (PN)-anammox (AMX) in municipal wastewater treatment, a novel process called partial denitrification (PD)-AMX has been developed. PD-AMX, which is known for cost-efficiency and environmental friendliness, has currently exhibited a promising potential for the removal of biological nitrogen from municipal wastewater and has attracted much research interest regarding its process mechanisms, as well as its practical applications. Here, we review the recent advances in the PD process and its coupling to the anammox process, including the development, basic principles, main characteristics, and critical process parameters of the stable operation of the PD-AMX process. We also explore the microbial community and its characteristics in the system and summarize the knowledge of the dominant bacteria to clarify the key factors affecting PD-AMX. Then, we introduce the engineering feasibility and economic feasibility as well as the potential challenges of the process. The induction and implementation of partial denitrification and maintenance of mainstream anammox are critical issues to be urgently solved. Meanwhile, the implementation of a full mainstream anammox application remains burdensome, while the mechanism of partial denitrification coupled to anammox needs to be further studied. Additionally, stable operation performance and process control1 methods need to be optimized or developed for the PD-AMX system for better engineering practice. This review can help to accelerate the research and application of the PD-AMX process for municipal wastewater treatment.
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Affiliation(s)
- Hong Chen
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| | - Zhi Tu
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China
| | - Sha Wu
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Guanlong Yu
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Chunyan Du
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Hong Wang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China
| | - Enzhe Yang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; School of Energy Science and Engineering, Central South University, Changsha, 410083, China
| | - Lu Zhou
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Bin Deng
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China.
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha, 410083, China.
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15
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Zhang F, Peng Y, Wang Z, Jiang H, Ren S, Qiu J. New insights into co-treatment of mature landfill leachate with municipal sewage via integrated partial nitrification, Anammox and denitratation. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125506. [PMID: 33765565 DOI: 10.1016/j.jhazmat.2021.125506] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 02/10/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
As a low consumption and high efficiency process, Partial Nitrification-Anammox/denitratation (PNAD) was applied to co-treat mature landfill leachate with municipal sewage for 300 days. Specifically, ammonia (670.2 ± 63.7 mg N/L) contained in mature landfill leachate was firstly oxidized to nitrite (611.5 ± 28.1 mg N/L) in sequence batch reactor (SBRPN); meanwhile, organic matter in municipal sewage was partially removed in another reactor (SBROMR); finally, nitrite produced (611.5 ± 28.1 mg N/L) in SBRPN and ammonia (53.1 ± 6.4 mg N/L) residing in pretreated municipal sewage were simultaneously degraded through combined Anammox-denitratation process in an up-flow anaerobic sludge bed (UASBAD). A satisfactory effluent quality of 10.3 mg/L TN was obtained after long-term operation, with Anammox and denitrification contributing to 86.2% and 5.8% nitrogen removal efficiency, respectively. Mass balance confirmed 67.2% nitrate generated from Anammox could be reduced to nitrite and in-situ reused. Anammox bacteria genes and nitrate reductase/nitrite reductase ratio were highly detected, accelerating combined Anammox-denitratation. Further, Ca. Brocadia triumph among various Anammox bacteria groups, increasing from 1.2% (day 120) to 3.6% (day 280).
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Affiliation(s)
- Fangzhai Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
| | - Zhong Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Hao Jiang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Shang Ren
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Jingang Qiu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
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16
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Achieving Efficient and Stable Deammonification at Low Temperatures—Experimental and Modeling Studies. ENERGIES 2021. [DOI: 10.3390/en14133961] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The short-term effects of temperature on deammonification sludge were evaluated in a laboratory-scale sequencing batch reactor (SBR). Mathematical modeling was used for further evaluations of different intermittent aeration strategies for achieving high and stable deammonification performance at decreasing temperatures. As for the biomass cultivated at high temperatures (e.g., 30 °C), a higher temperature dependency (the adjusted Arrhenius coefficient θ for 11–17 °C = 1.71 vs. θ for 17–30 °C = 1.12) on the specific anammox growth rates was found at lower temperatures (11–17 °C) in comparison with higher temperatures (17–30 °C). Further evaluations of recovering the nitrogen removal efficiency at decreasing temperatures with the mathematical model by modifying the intermittent aeration strategies (aeration frequency (F) and the ratio (R) between non-aerated (non-aer) phase and aerated (aer) phase durations) indicated that intermittent aeration with a prolonged non-aerated phase (e.g., R ≥ 4 regardless of F value) would help to maintain high and stable deammonification performance (~80%) at decreasing temperatures (14–22 °C). Extending the non-aerated phases (increasing R) and reducing the frequency (F) of off/on phase changes have a positive effect on increasing energy savings, leading to increasing interest in this method.
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17
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Ding C, Adrian L. Comparative genomics in "Candidatus Kuenenia stuttgartiensis" reveal high genomic plasticity in the overall genome structure, CRISPR loci and surface proteins. BMC Genomics 2020; 21:851. [PMID: 33261555 PMCID: PMC7709395 DOI: 10.1186/s12864-020-07242-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/18/2020] [Indexed: 11/10/2022] Open
Abstract
Background Anaerobic ammonium oxidizing bacteria (anammox bacteria) are contributing significantly to the nitrogen cycle and are successfully used in wastewater treatment. Due to the lack of complete genomes in the databases, little is known about the stability and variability of their genomes and how the genomes evolve in response to changing environments. Results Here we report the complete genome of the anammox bacterium “Candidatus Kuenenia stuttgartiensis” strain CSTR1 which was enriched planktonically in a semi-continuous stirred-tank reactor. A comparison of the genome of strain CSTR1 with the genome of “Ca. Kuenenia stuttgartiensis” MBR1 and the draft genome of KUST showed > 99% average nucleotide identity among all. Rearrangements of large genomic regions were observed, most of which were associated with transposase genes. Phylogenetic analysis suggests that strain MBR1 is more distantly related to the other two strains. Proteomic analysis of actively growing cells of strain CSTR1 (growth rate ~ 0.33 d− 1) failed to detect the annotated cytochrome cd1-type nitrite reductase (NirS) although in total 1189 proteins were found in the proteome. Yet, this NirS was expressed when strain CSTR1 was under stress or starvation (growth rate < 0.06 d− 1). We also observed large sequence shifts in the strongly expressed S-layer protein compared to other “Ca. Kuenenia” strains, indicating the formation of hybrids of genes encoding the surface proteins. Conclusions “Ca. Kuenenia” strains appear to be relatively stable in their basic physiological traits, but show high variability in overall genome structure and surface proteins.
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Affiliation(s)
- Chang Ding
- Helmholtz Centre for Environmental Research - UFZ, Environmental Biotechnology, Permoserstraße 15, 04318, Leipzig, Germany.
| | - Lorenz Adrian
- Helmholtz Centre for Environmental Research - UFZ, Environmental Biotechnology, Permoserstraße 15, 04318, Leipzig, Germany.,Chair of Geobiotechnology, Technische Universität Berlin, Ackerstraße 76, 13355, Berlin, Germany
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18
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Zhang D, Zhang W, Liang Y. Bacterial community in a freshwater pond responding to the presence of perfluorooctanoic acid (PFOA). ENVIRONMENTAL TECHNOLOGY 2020; 41:3646-3656. [PMID: 31071274 DOI: 10.1080/09593330.2019.1616828] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/26/2019] [Indexed: 06/09/2023]
Abstract
Microbial community is an essential component of freshwater, providing valuable self-purification ecosystem service. Poly-and perfluoroalkyl substances (PFAS) have attracted increasing concerns in light of their potential ecotoxicological effects and ubiquitous occurrence in the aquatic environment. Knowledge about their influences on the microbial community, however, remains largely unknown. In the present study, Illumina high-throughput sequencing of 16S ribosomal DNA was applied to explore the changes in the dynamic and composition of the bacterial community upon exposure to perfluorooctanoic acid (PFOA) at different concentrations, i.e. 0.45 µg L-1, 130 µg L-1 and 5.0 mg L-1. Principal component analysis (PCA) revealed variations of 57.2% for Principal Component 1 and 16.0% for Principal Component 2 of the total community. This clearly demonstrated changes in the bacterial community structure between the controls and PFOA-amended water samples. At the phylum level, the predominant bacteria in the original pond water included Proteobacteria (64.47%), Armatimonadetes (11.87%), Actinobacteria (10.81%), Bacteroidetes (6.36%), Chloroflexi (1.44%), Verrucomicrobia (0.61%) and Firmicutes (0.14%). The relative abundance of Actinobacteria, Bacteroidetes, and Verrucomicrobia decreased 26.5-38.8%, 40.5-70.7%, and 47.4-87.5%, respectively, upon PFOA exposure. By contrast, PFOA led to an obvious increase of Proteobacteria, by 12.5-18.6% and Chloroflexi by 19.1-74.4%. Results from this study provided the needed evidence that PFAS at high concentrations could affect the microbial community in a freshwater ecosystem. Principle Component Analysis (PCA) results suggest clear distinctions of bacterial community structure between the original pond water and the water samples spiked with PFOA based on pyrosequencing of 16S rRNA gene.
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Affiliation(s)
- Dongqing Zhang
- Environmental and Sustainable Engineering, College of Engineering and Applied Science, University at Albany, Albany, NY, USA
| | - Weilan Zhang
- Environmental and Sustainable Engineering, College of Engineering and Applied Science, University at Albany, Albany, NY, USA
| | - Yanna Liang
- Environmental and Sustainable Engineering, College of Engineering and Applied Science, University at Albany, Albany, NY, USA
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19
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Huang YT, Chen SS, Jetten MSM, Lin JG. Nanoarchitectured structure and population dynamics of anaerobic ammonium oxidizing (anammox) bacteria in a wastewater treatment plant. JOURNAL OF HAZARDOUS MATERIALS 2020; 396:122714. [PMID: 32413666 DOI: 10.1016/j.jhazmat.2020.122714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/04/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
Studies on microbial community and population dynamics are essential for the successful development, monitoring and operation of biological wastewater treatment systems. Especially for novel or sustainable systems such as the anaerobic ammonium oxidizing (anammox) process that are not yet well explored. Here we collected granular microbial sludge samples and investigated a community of anammox bacteria over a period of four years, divided into eight stages in a full scale simultaneous partial nitrification, anammox and denitrification (SNAD) process for treating landfill leachate. Specific qPCR primers were designed to target and quantify the two most abundant anammox species, Candidatus Kuenenia stuttgartiensis (KS) and Candidatus Brocadia anammoxidans (BA). The two species were monitored and could explain the dynamic shift of the anammox community corresponding to the operating conditions. Using the newly designed KS-specific primer (KSqF3/KSqR3) and BA-specific primer (BAqF/BAqR), we estimated the amounts of KS and BA to be in the range of 6.2 × 106 to 5.9 × 108 and 1.1 × 105 to 4.1 × 107 copies μg-1 DNA, respectively. KS was found to be the dominant species in all anammox granules studied and played an important role in the formation of granules. The KS/BA ratio was positively correlated to the size of granules in the reactor and ammonia nitrogen removal efficiency of the treatment plant.
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Affiliation(s)
- Yu-Tzu Huang
- Department of Chemical Engineering and Research Center for Circular Economy, Chung Yuan Christian University, No. 200, Chung-Pei Road, Taoyuan 32023, Taiwan; R&D Center for Membrane Technology and Research Center for Analysis and Identification, Chung Yuan Christian University, No. 200, Chung-Pei Road, Taoyuan 32023, Taiwan; Department of Environmental Engineering, Chung Yuan Christian University, No. 200, Chung-Pei Road, Taoyuan 32023, Taiwan.
| | - Shiou-Shiou Chen
- Department of Environmental Engineering, Chung Yuan Christian University, No. 200, Chung-Pei Road, Taoyuan 32023, Taiwan
| | - Mike S M Jetten
- Department of Microbiology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegenm the Netherlands
| | - Jih-Gaw Lin
- Institute of Environmental Engineering, National Chiao Tung University, 1001 University Road, Hsinchu City 30010, Taiwan
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20
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Oren A, Garrity GM, Parker CT, Chuvochina M, Trujillo ME. Lists of names of prokaryotic Candidatus taxa. Int J Syst Evol Microbiol 2020; 70:3956-4042. [DOI: 10.1099/ijsem.0.003789] [Citation(s) in RCA: 782] [Impact Index Per Article: 195.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
We here present annotated lists of names of Candidatus taxa of prokaryotes with ranks between subspecies and class, proposed between the mid-1990s, when the provisional status of Candidatus taxa was first established, and the end of 2018. Where necessary, corrected names are proposed that comply with the current provisions of the International Code of Nomenclature of Prokaryotes and its Orthography appendix. These lists, as well as updated lists of newly published names of Candidatus taxa with additions and corrections to the current lists to be published periodically in the International Journal of Systematic and Evolutionary Microbiology, may serve as the basis for the valid publication of the Candidatus names if and when the current proposals to expand the type material for naming of prokaryotes to also include gene sequences of yet-uncultivated taxa is accepted by the International Committee on Systematics of Prokaryotes.
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Affiliation(s)
- Aharon Oren
- The Institute of Life Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401 Jerusalem, Israel
| | - George M. Garrity
- NamesforLife, LLC, PO Box 769, Okemos MI 48805-0769, USA
- Department of Microbiology & Molecular Genetics, Biomedical Physical Sciences, Michigan State University, East Lansing, MI 48824-4320, USA
| | | | - Maria Chuvochina
- Australian Centre for Ecogenomics, University of Queensland, St. Lucia QLD 4072, Brisbane, Australia
| | - Martha E. Trujillo
- Departamento de Microbiología y Genética, Campus Miguel de Unamuno, Universidad de Salamanca, 37007, Salamanca, Spain
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21
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Fang F, Li K, Guo JS, Wang H, Zhang P, Yan P. New insights into nitrous oxide emissions in a single-stage CANON process coupled with denitrification: thermodynamics and nitrogen transformation. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:157-169. [PMID: 32910800 DOI: 10.2166/wst.2020.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The dynamic characteristics of N2O emissions and nitrogen transformation in a sequencing batch biofilm reactor (SBBR) using the completely autotrophic nitrogen removal over nitrite (CANON) process coupled with denitrification were investigated via 15N isotope tracing and thermodynamic analysis. The results indicate that the Gibbs free energy (ΔG) values of N2O production by the nitrifier denitrification and heterotrophic denitrification reactions were greater than that of NH2OH oxidation, indicating that N2O was easier to produce via either nitrifier and heterotrophic denitrification than via NH2OH oxidation. Ammonia-oxidizing bacteria (AOB) denitrification exhibited a higher fs 0 (the fraction of electron-donor electrons utilized for cell synthesis) than NH2OH oxidation. Therefore, AOB preferred the denitrification pathway because of its growth advantage when N2O was produced by the AOB. The N2O emissions by hydroxylamine oxidation, AOB denitrification and heterotrophic denitrification in the SBBRs using different C/N ratios account for 5.4-7.6%, 45.2-60.8% and 33.8-47.2% of the N2O produced, respectively. The total N2O emission with C/N ratios of 0, 0.67 and 1 was 228.04, 205.57 and 190.4 μg N2O-N·g-1VSS, respectively. The certain carbon sources aid in the reduction of N2O emissions in the process.
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Affiliation(s)
- Fang Fang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, No.174, Shazhen Street, Chongqing 400045, China E-mail:
| | - Kai Li
- College of Eco-environment Engineering, Guizhou Minzu University, Huaxi District, Guiyang City, Guizhou 550025, China
| | - Jin-Song Guo
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, No.174, Shazhen Street, Chongqing 400045, China E-mail:
| | - Han Wang
- College of Eco-environment Engineering, Guizhou Minzu University, Huaxi District, Guiyang City, Guizhou 550025, China
| | - Ping Zhang
- College of Eco-environment Engineering, Guizhou Minzu University, Huaxi District, Guiyang City, Guizhou 550025, China
| | - Peng Yan
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, No.174, Shazhen Street, Chongqing 400045, China E-mail:
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22
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Huang T, Liu W, Zhang Y, Zhou Q, Wu Z, He F. A stable simultaneous anammox, denitrifying anaerobic methane oxidation and denitrification process in integrated vertical constructed wetlands for slightly polluted wastewater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 262:114363. [PMID: 32443207 DOI: 10.1016/j.envpol.2020.114363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/21/2020] [Accepted: 03/10/2020] [Indexed: 06/11/2023]
Abstract
Anaerobic ammonium oxidation (anammox), denitrifying anaerobic methane oxidation bacteria (DAMO) have received great attention for their excellent performance in nitrogen removal. However, not much study focused on the co-existence of anammox, DAMO, and denitrification in constructed wetlands, not to mention the advantage of their application in mitigating the necessary byproduct nitrous oxide (N2O), methane (CH4) from the biodegradation process. In this study, the result indicated the construction of integrated vertical constructed wetlands (IVCWs) contributed to the high-efficient stable simultaneous anammox, DAMO and denitrification (SADD) process for the nutrients removal, with denitrification being the least contributor to nitrogen reduction. Besides the succession of SADD process was largely the driver for the variation of N2O, CH4 emission. The structural equation method (SEM) further suggested that the three biological pathways of qnorB/bacteria, archaea/qnorB, and anammox/nirK accounted for the N2O production, as were top-controlled by mcrA/DAMO in IVCWs. Besides the anammox-associated nitrifier denitrification was the main source for N2O production. And that the trade-off effect between the CH4 and N2O production was exerted by the DAMO, while the influence was far from satisfactory under the methane constraints.
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Affiliation(s)
- Tao Huang
- University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Wei Liu
- University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Qiaohong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhenbin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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23
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Rahimi S, Modin O, Mijakovic I. Technologies for biological removal and recovery of nitrogen from wastewater. Biotechnol Adv 2020; 43:107570. [PMID: 32531318 DOI: 10.1016/j.biotechadv.2020.107570] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 05/22/2020] [Accepted: 05/22/2020] [Indexed: 12/11/2022]
Abstract
Water contamination is a growing environmental issue. Several harmful effects on human health and the environment are attributed to nitrogen contamination of water sources. Consequently, many countries have strict regulations on nitrogen compound concentrations in wastewater effluents. Wastewater treatment is carried out using energy- and cost-intensive biological processes, which convert nitrogen compounds into innocuous dinitrogen gas. On the other hand, nitrogen is also an essential nutrient. Artificial fertilizers are produced by fixing dinitrogen gas from the atmosphere, in an energy-intensive chemical process. Ideally, we should be able to spend less energy and chemicals to remove nitrogen from wastewater and instead recover a fraction of it for use in fertilizers and similar applications. In this review, we present an overview of various technologies of biological nitrogen removal including nitrification, denitrification, anaerobic ammonium oxidation (anammox), as well as bioelectrochemical systems and microalgal growth for nitrogen recovery. We highlighted the nitrogen removal efficiency of these systems at different temperatures and operating conditions. The advantages, practical challenges, and potential for nitrogen recovery of different treatment methods are discussed.
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Affiliation(s)
- Shadi Rahimi
- Division of Systems and Synthetic Biology, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden.
| | - Oskar Modin
- Division of Water Environment Technology, Department of Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Ivan Mijakovic
- Division of Systems and Synthetic Biology, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden; The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark.
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24
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Jo Y, Cho K, Choi H, Lee C. Treatment of low-strength ammonia wastewater by single-stage partial nitritation and anammox using upflow dual-bed gel-carrier reactor (UDGR). BIORESOURCE TECHNOLOGY 2020; 304:123023. [PMID: 32088631 DOI: 10.1016/j.biortech.2020.123023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 06/10/2023]
Abstract
This study investigated the single-stage partial nitritation and anammox (S-PNA) treatment of low-strength ammonia wastewater (≤140 mg NH4+-N/L). Upflow dual-bed gel-carrier reactor (UDGR) with polyvinyl alcohol cryogel biocarriers, developed in this study, was employed for the anammox biomass enrichment from conventional activated sludge and subsequent S-PNA experiments. Anammox biomass was successfully enriched from conventional activated sludge. The enriched anammox carriers were inoculated together with gel carriers containing nitrifying sludge into the S-PNA reactors. S-PNA activity developed rapidly, and the nitrogen removal efficiency and rate reached up to 90.1% (with complete ammonia removal) and 0.15 kg N/m3⋅d, respectively, under low nitrogen loading conditions (0.10-0.17 kg N/m3⋅d). The microbial community structure changed significantly while adapting to anammox and S-PNA conditions. Anammox was likely driven solely by a Candidatus Jettenia population accounting for ≤49.4% of bacterial 16S rRNA genes. The results demonstrate that the UDGR-based S-PNA is suitable for treating low-strength wastewater.
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Affiliation(s)
- Yeadam Jo
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea
| | - Kyungjin Cho
- Water Cycle Research Center, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Hyungmin Choi
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea
| | - Changsoo Lee
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea.
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25
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Liu L, Ji M, Wang F, Wang S, Qin G. Insight into the influence of microbial aggregate types on nitrogen removal performance and microbial community in the anammox process - A review and meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 714:136571. [PMID: 31986383 DOI: 10.1016/j.scitotenv.2020.136571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/25/2019] [Accepted: 01/05/2020] [Indexed: 06/10/2023]
Abstract
The anaerobic ammonium oxidation (anammox) process has been paid close attention in the wastewater treatment field because of its energy-saving advantages. Different microbial aggregates have been used in the anammox process, and there is an urgent need to evaluate the comparative efficiencies of the widely used types of microbial aggregates with respect to their nitrogen removal performance as well as microbial community. To address this, 1724 published papers concentrating on three types of microbial aggregates, namely granules, biofilm, and flocs were compiled. A quantitative meta-analysis was carried out to compare the standard error of nitrogen removal efficiencies among these three microbial aggregates. The data sources of this meta-analysis comprised articles on granules (42%), followed by those on biofilm (33%) and flocs (25%). The granular sludge appeared to be competent in achieving the highest average nitrogen removal efficiencies of 81.1%, followed by biofilm (80.8%). Flocs provided comparatively poor removal of nitrogen pollutants with the lowest removal efficiency of 74.1%. Biofilm had the highest abundance of functional microbial communities with 43.4% on Candidatus Kuenenia and 11.2% on Candidatus Brocadia, which were detected in the anammox system as common genera. This meta-analysis suggested that the microbial aggregate types of granules and biofilm had a relatively low heterogeneity and high total nitrogen removal efficiencies for the anammox process and were the recommended microbial aggregates for anammox bacteria cultivation and operation of the anammox process.
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Affiliation(s)
- Lingjie Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Min Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Fen Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China.
| | - Shuya Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Geng Qin
- School of Computer Science and Technology, Civil Aviation University of China, Tianjin 300300, China
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26
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Liu G, Vijayaraman SB, Dong Y, Li X, Andongmaa BT, Zhao L, Tu J, He J, Lin L. Bacillus velezensis LG37: transcriptome profiling and functional verification of GlnK and MnrA in ammonia assimilation. BMC Genomics 2020; 21:215. [PMID: 32143571 PMCID: PMC7060608 DOI: 10.1186/s12864-020-6621-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 02/25/2020] [Indexed: 11/14/2022] Open
Abstract
Background In recent years, interest in Bacillus velezensis has increased significantly due to its role in many industrial water bioremediation processes. In this study, we isolated and assessed the transcriptome of Bacillus velezensis LG37 (from an aquaculture pond) under different nitrogen sources. Since Bacillus species exhibit heterogeneity, it is worth investigating the molecular mechanism of LG37 through ammonia nitrogen assimilation, where nitrogen in the form of molecular ammonia is considered toxic to aquatic organisms. Results Here, a total of 812 differentially expressed genes (DEGs) from the transcriptomic sequencing of LG37 grown in minimal medium supplemented with ammonia (treatment) or glutamine (control) were obtained, from which 56 had Fold Change ≥2. BLAST-NCBI and UniProt databases revealed 27 out of the 56 DEGs were potentially involved in NH4+ assimilation. Among them, 8 DEGs together with the two-component regulatory system GlnK/GlnL were randomly selected for validation by quantitative real-time RT-PCR, and the results showed that expression of all the 8 DEGs are consistent with the RNA-seq data. Moreover, the transcriptome and relative expression analysis were consistent with the transporter gene amtB and it is not involved in ammonia transport, even in the highest ammonia concentrations. Besides, CRISPR-Cas9 knockout and overexpression glnK mutants further evidenced the exclusion of amtB regulation, suggesting the involvement of alternative transporter. Additionally, in the transcriptomic data, a novel ammonium transporter mnrA was expressed significantly in increased ammonia concentrations. Subsequently, OEmnrA and ΔmnrA LG37 strains showed unique expression pattern of specific genes compared to that of wild-LG37 strain. Conclusion Based on the transcriptome data, regulation of nitrogen related genes was determined in the newly isolated LG37 strain to analyse the key regulating factors during ammonia assimilation. Using genomics tools, the novel MnrA transporter of LG37 became apparent in ammonia transport instead of AmtB, which transports ammonium nitrogen in other Bacillus strains. Collectively, this study defines heterogeneity of B. velezensis LG37 through comprehensive transcriptome analysis and subsequently, by genome editing techniques, sheds light on the enigmatic mechanisms controlling the functional genes under different nitrogen sources also reveals the need for further research.
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Affiliation(s)
- Guangxin Liu
- State Key Laboratory of Agricultural Microbiology, College of Fisheries and College of Life Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China.,Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Sarath Babu Vijayaraman
- Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Yanjun Dong
- State Key Laboratory of Agricultural Microbiology, College of Fisheries and College of Life Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Xinfeng Li
- State Key Laboratory of Agricultural Microbiology, College of Fisheries and College of Life Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Binda Tembeng Andongmaa
- State Key Laboratory of Agricultural Microbiology, College of Fisheries and College of Life Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Lijuan Zhao
- Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Jiagang Tu
- State Key Laboratory of Agricultural Microbiology, College of Fisheries and College of Life Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Jin He
- State Key Laboratory of Agricultural Microbiology, College of Fisheries and College of Life Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China.
| | - Li Lin
- State Key Laboratory of Agricultural Microbiology, College of Fisheries and College of Life Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China. .,Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China. .,Laboratory for Marine Fisheries Science and Food Production Processes, National Laboratory for Marine Science and Technology, Qingdao, 266071, Shandong, China.
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27
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Nsenga Kumwimba M, Lotti T, Şenel E, Li X, Suanon F. Anammox-based processes: How far have we come and what work remains? A review by bibliometric analysis. CHEMOSPHERE 2020; 238:124627. [PMID: 31548173 DOI: 10.1016/j.chemosphere.2019.124627] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/05/2019] [Accepted: 08/19/2019] [Indexed: 06/10/2023]
Abstract
Nitrogen contamination remains a severe environmental problem and a major threat to sustainable development worldwide. A systematic analysis of the literature indicates that the partial nitritation-anammox (PN/AMX) process is still actively studied as a viable option for energy-efficient and feasible technology for the sustainable treatment of N- rich wastewaters, since its initial discovery in 1990. Notably, the mainstream PN/AMX process application remains the most challenging bottleneck in AMX technology and fascinates the world's attention in AMX studies. This paper discusses the recent trends and developments of PN/AMX research and analyzes the results of recent years of research on the PN/AMX from lab-to full-scale applications. The findings would deeply improve our understanding of the major challenges under mainstream conditions and next-stage research on the PN/AMX process. A great deal of efforts has been made in the process engineering, PN/AMX bacteria populations, predictive modeling, and the full-scale implementations during the past 22 years. A series of new and excellent experimental findings at lab, pilot and full-scale levels including good nitrogen removal performance even under low temperature (15-10 °C) around the world were achieved. To date, pilot- and full-scale PN/AMX have been successfully used to treat different types of industrial sewage, including black wastewater, sludge digester liquids, landfill leachate, monosodium glutamate wastewater, etc. Supplementing the qualitative analysis, this review also provides a quantitative bibliometrics study and evaluates global perspectives on PN/AMX research published during the past 22 years. Finally, general trends in the development of PN/AMX research are summarized with the aim of conveying potential future trajectories. The current review offers a valuable orientation and global overview for scientists, engineers, readers and decision makers presently focusing on PN/AMX processes.
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Affiliation(s)
- Mathieu Nsenga Kumwimba
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China; School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Faculty of Agronomy, Department of Natural Resources and Environmental Management, University of Lubumbashi, Congo
| | - Tommaso Lotti
- Civil and Environmental Engineering Department, University of Florence, Via di Santa Marta 3, 50139, Florence, Italy
| | - Engin Şenel
- Hitit University Faculty of Medicine, Department of Dermatology, Çorum, Turkey
| | - Xuyong Li
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Fidèle Suanon
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
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28
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Peng MW, Yu XL, Guan Y, Liu P, Yan P, Fang F, Guo J, Chen YP. Underlying Promotion Mechanism of High Concentration of Silver Nanoparticles on Anammox Process. ACS NANO 2019; 13:14500-14510. [PMID: 31794189 DOI: 10.1021/acsnano.9b08263] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Silver nanoparticles (AgNPs) are largely discharged into sewers and mostly accumulated in the sediments and sludge. The toxicity of AgNPs to environmental microorganisms has attracted great attention. However, the effect of AgNPs on anaerobic ammonium-oxidizing (anammox) granules remains unknown. Here we present the underlying promotion mechanism of AgNPs on anammox granules from a morphological and molecular biology perspective. Our results demonstrate a positive effect of AgNPs on the proliferation of anammox bacteria. AgNPs resulted in a change in the three-dimensional structure of anammox granules and led to larger pore size and higher porosity. In addition, the diffusion capacity of the substrate and metal ions was enhanced. Furthermore, the expression of anammox-related enzymes, such as nitrite oxidoreductase (NirS), hydrazine dehydrogenase (Hdh), and hydrazine synthase (HZS), was upregulated. Therefore, the growth rate and the nitrogen removal performance of the anammox granules were improved. Our findings clarify the underlying mechanism of AgNPs on anammox granules and provide a promising method for the treatment of AgNPs-rich wastewater.
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Affiliation(s)
- Meng-Wen Peng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE , Chongqing University , Chongqing 400045 , China
| | - Xiu-Ling Yu
- Zhejiang Provincial Key Laboratory of Agricultural Resource and Environment , Zhejiang University , Hangzhou 310058 , China
| | - Yong Guan
- National Synchrotron Radiation Laboratory , University of Science and Technology of China , Hefei 230026 , China
| | - Peng Liu
- School of Environmental Studies , China University of Geosciences , Wuhan 430074 , China
| | - Peng Yan
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE , Chongqing University , Chongqing 400045 , China
| | - Fang Fang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE , Chongqing University , Chongqing 400045 , China
| | - Jinsong Guo
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE , Chongqing University , Chongqing 400045 , China
| | - You-Peng Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE , Chongqing University , Chongqing 400045 , China
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29
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Mardanov AV, Beletsky AV, Ravin NV, Botchkova EA, Litti YV, Nozhevnikova AN. Genome of a Novel Bacterium " Candidatus Jettenia ecosi" Reconstructed From the Metagenome of an Anammox Bioreactor. Front Microbiol 2019; 10:2442. [PMID: 31736891 PMCID: PMC6828613 DOI: 10.3389/fmicb.2019.02442] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 10/10/2019] [Indexed: 11/13/2022] Open
Abstract
The microbial community of a laboratory-scale bioreactor based on the anammox process was investigated by using metagenomic approaches and fluorescent in situ hybridization (FISH). The bioreactor was initially inoculated with activated sludge from the denitrifying bioreactor of a municipal wastewater treatment station. By constantly increasing the ammonium and nitrite load, a microbial community containing the novel species of anammox bacteria "Candidatus Jettenia ecosi" developed in the bioreactor after 5 years when the maximal daily nitrogen removal rate reached 8.5 g/L. Sequencing of the metagenome of anammox granules and the binning of the contigs obtained, allowed a high quality draft genome of the dominant anammox bacterium, "Candidatus Jettenia ecosi" to be assembled. Annotation of the 3.9 Mbp long genome revealed 3970 putative protein-coding genes, 45 tRNA genes, and genes for 16S/23S rRNAs. Analysis of the genome of "Candidatus Jettenia ecosi" revealed genes involved in anammox metabolism, including nitrite and ammonium transporters, copper-containing nitrite reductase, a nitrate reductase complex, hydrazine synthase, and hydrazine dehydrogenase. Autotrophic carbon fixation could be accomplished through the Wood Ljungdahl pathway. The composition of the community was investigated through a search of 16S rRNA sequences in the metagenome and FISH analysis of the anammox granules. The presence of the members of Ignavibacteriae, Betaproteobacteria, Chloroflexi and other microbial lineages reflected the complexity of the microbial processes in the studied bioreactor performed by anammox Planctomycetes, fermentative bacteria, and denitrifiers.
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Affiliation(s)
- Andrey V. Mardanov
- Institute of Bioengineering, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Alexey V. Beletsky
- Institute of Bioengineering, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Nikolai V. Ravin
- Institute of Bioengineering, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Ekaterina A. Botchkova
- Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Yuriy V. Litti
- Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Alla N. Nozhevnikova
- Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
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30
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Yan P, Li K, Guo JS, Zhu SX, Wang ZK, Fang F. Toward N 2O emission reduction in a single-stage CANON coupled with denitrification: Investigation on nitrite simultaneous production and consumption and nitrogen transformation. CHEMOSPHERE 2019; 228:485-494. [PMID: 31051351 DOI: 10.1016/j.chemosphere.2019.04.148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 04/09/2019] [Accepted: 04/20/2019] [Indexed: 06/09/2023]
Abstract
A dynamic analysis approach for determining nitrite production and consumption rates was established to systematically investigate the characteristics of nitrogen transformation and N2O emission of the completely autotrophic nitrogen removal over nitrite (CANON) process coupled with denitrification using a sequencing batch biofilm reactor (SBBR). The results indicate that anaerobic ammonium-oxidizing bacteria was not inhibited significantly by low C/N ratios. There were no obvious differences in the nitrite production rate, nitrite consumption rate or nitrogen removal among reactors operated with C/N ratios of 0, 0.67 and 1.00, which suggested that the certain carbon source did not significantly affect the nitrite conversion and nitrogen removal in the process. More than 60% of total N2O emission is generated during the initial phase of each period in the SBBR. More than 94.5% of N2O was generated by NO2--N consumption via denitrification in the process. Interestingly, total N2O production drops by 16.7%, when the C/N ratio increases from 0 to 1. This phenomenon may be caused by the inhibition of N2O production via AOB denitrification. Therefore, an appropriate carbon source (C/N = 1.00) has the beneficial effect of reducing N2O emission by CANON coupled with denitrification. The results of this study provide an important empirical foundation for the mitigation of N2O emission in the CANON process coupled with denitrification.
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Affiliation(s)
- Peng Yan
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, No. 174, Shazhen Street, Chongqing, 400045, China.
| | - Kai Li
- College of Eco-environment Engineering, Guizhou Minzu University, Huaxi District, Guiyang City, Guizhou, 550025, China
| | - Jin-Song Guo
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, No. 174, Shazhen Street, Chongqing, 400045, China
| | - Si-Xi Zhu
- College of Eco-environment Engineering, Guizhou Minzu University, Huaxi District, Guiyang City, Guizhou, 550025, China
| | - Zhi-Kang Wang
- College of Eco-environment Engineering, Guizhou Minzu University, Huaxi District, Guiyang City, Guizhou, 550025, China
| | - Fang Fang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, No. 174, Shazhen Street, Chongqing, 400045, China.
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Kraiem K, Wahab MA, Kallali H, Fra-Vazquez A, Pedrouso A, Mosquera-Corral A, Jedidi N. Effects of short- and long-term exposures of humic acid on the Anammox activity and microbial community. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:19012-19024. [PMID: 30039484 DOI: 10.1007/s11356-018-2786-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
Abstract
Humic acid has a controversial effect on the biological treatment processes. Here, we have investigated humic acid effects on the Anammox activity by studying the nitrogen removal efficiencies in batch and continuous conditions and analyzing the microbial community using Fluorescence in situ hybridization (FISH) technique. The results showed that the Anammox activity was affected by the presence of humic acid at a concentration higher than 70 mg/L. In fact, in the presence of humic acid concentration of 200 mg/L, the Anammox activity decreased to 57% in batch and under continuous condition, the ammonium removal efficiencies of the reactor decreased from 78 to 41%. This reduction of Anammox activity after humic acid addition was highlighted by FISH analysis which revealed a considerable reduction of the abundance of Anammox bacteria and the bacteria living in symbiosis with them. Furthermore, a total inhibition of Candidatus Brocadia fulgida was observed. However, humic acid has promoted heterotrophic denitrifying bacteria which became dominant in the reactor. In fact, the evolution of the organic matter in the reactor showed that the added humic acid was used as carbon source by heterotrophic bacteria which explained the shift of metabolism to the favor of heterotrophic denitrifying bacteria. Accordingly, humic acid should be controlled in the influent to avoid Anammox activity inhibition.
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Affiliation(s)
- Khadija Kraiem
- Laboratory of Wastewater Treatment and Valorization, Water Research and Technologies Center, CERTE, Technopark Tourist Route of Soliman Nabeul, PO Box No. 273, 8020, Soliman, Tunisia
- Faculty of Sciences of Tunis, University of Tunis El Manar, Rommana, B.P. no. 94, 1068, Tunis, Tunisia
| | - Mohamed Ali Wahab
- Laboratory of Wastewater Treatment and Valorization, Water Research and Technologies Center, CERTE, Technopark Tourist Route of Soliman Nabeul, PO Box No. 273, 8020, Soliman, Tunisia.
| | - Hamadi Kallali
- Laboratory of Wastewater Treatment and Valorization, Water Research and Technologies Center, CERTE, Technopark Tourist Route of Soliman Nabeul, PO Box No. 273, 8020, Soliman, Tunisia
| | - Andrea Fra-Vazquez
- Department of Chemical Engineering, Institute of Technological Research, School of Engineering, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa s/n, 15782, Santiago de Compostela, Spain
| | - Alba Pedrouso
- Department of Chemical Engineering, Institute of Technological Research, School of Engineering, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa s/n, 15782, Santiago de Compostela, Spain
| | - Anuska Mosquera-Corral
- Department of Chemical Engineering, Institute of Technological Research, School of Engineering, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa s/n, 15782, Santiago de Compostela, Spain
| | - Naceur Jedidi
- Laboratory of Wastewater Treatment and Valorization, Water Research and Technologies Center, CERTE, Technopark Tourist Route of Soliman Nabeul, PO Box No. 273, 8020, Soliman, Tunisia
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Miao L, Yang G, Tao T, Peng Y. Recent advances in nitrogen removal from landfill leachate using biological treatments - A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 235:178-185. [PMID: 30682670 DOI: 10.1016/j.jenvman.2019.01.057] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/07/2019] [Accepted: 01/17/2019] [Indexed: 05/21/2023]
Abstract
Landfill leachate, generated from the wastes in a landfill, is a type of wastewater with high concentrations of ammonia and organics, causing a serious environmental pollution. Because of its complex and changing characteristics, it is difficult to remove nitrogen from landfill leachate economically and effectively. Hence, nitrogen removal is a significant research priority of landfill leachate treatment in recent years. Biological processes are known to be effective in nitrogen removal. In this work, the biological nitrogen removal treatments were divided into the following processes: conventional nitrification-denitrification process, nitritation-denitritation process, endogenous denitritation process, and anaerobic ammonium oxidation (Anammox) process. This manuscript summarized the theories and applications of these approaches in detail, and concluded that appropriate processes should be selected in accordance with different characteristics of landfill leachate, in order to effectively remove nitrogen from all stages of landfill leachate and reduce disposal costs. Finally, perspective on the challenges and opportunities of biological nitrogen removal from landfill leachate was also presented.
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Affiliation(s)
- Lei Miao
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, PR China
| | - Gangqing Yang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, PR China
| | - Tao Tao
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing, PR China.
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Yang T, Liu QF, Hao Q, Fu Z. Quinoline's influence on nitrogen removal performance and microbial community composition of the anammox process. ENVIRONMENTAL TECHNOLOGY 2019; 40:1425-1437. [PMID: 29283317 DOI: 10.1080/09593330.2017.1422556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 12/23/2017] [Indexed: 06/07/2023]
Abstract
This study aimed to evaluate the effects of quinoline on nitrogen removal performance and microbial community of an anaerobic biofilm reactor with anammox activity. Results showed that 20 mg L-1 quinoline addition leading the ammonia and nitrite removal efficiency of the ABR reduced from about 90% to 40%. Illumina MiSeq sequencing study indicated that microbial community structure and composition varied with the additive of quinoline. Planctomycetes and Bacteroidetes, decreased in abundance, suggested that quinoline adversely affects the anammox metabolism within the anammox reactor. The distribution of the anammox bacteria was affected by quinoline addition. Ca. Jettenia prevailed over the other two anammox bacteria (Brodica and Kuenenia) in the recovered phase.
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Affiliation(s)
- Ting Yang
- a School of Ecology and Environment , Inner Mongolia University , Hohhot , People's Republic of China
- b Inner Mongolia Coal Chemical Industry Wastewater Treatment and Reuse Engineering Technology Research Center , Inner Mongolia University , Hohhot , People's Republic of China
| | - Qi-Feng Liu
- a School of Ecology and Environment , Inner Mongolia University , Hohhot , People's Republic of China
- b Inner Mongolia Coal Chemical Industry Wastewater Treatment and Reuse Engineering Technology Research Center , Inner Mongolia University , Hohhot , People's Republic of China
| | - Qian Hao
- a School of Ecology and Environment , Inner Mongolia University , Hohhot , People's Republic of China
- b Inner Mongolia Coal Chemical Industry Wastewater Treatment and Reuse Engineering Technology Research Center , Inner Mongolia University , Hohhot , People's Republic of China
| | - Zhimin Fu
- a School of Ecology and Environment , Inner Mongolia University , Hohhot , People's Republic of China
- b Inner Mongolia Coal Chemical Industry Wastewater Treatment and Reuse Engineering Technology Research Center , Inner Mongolia University , Hohhot , People's Republic of China
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Metagenomics Response of Anaerobic Ammonium Oxidation (anammox) Bacteria to Bio-Refractory Humic Substances in Wastewater. WATER 2019. [DOI: 10.3390/w11020365] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Anammox-based processes have been widely applied for the treatment of wastewater (e.g., wastewater irrigation systems and constructed wetland) which consists of bio-refractory humic substances. Nonetheless, the impacts of bio-refractory humic substances on anammox consortia are rarely reported. In the present study, three identical lab-scale anammox reactors (i.e., HS0, HS1 and HS10), two of which were dosed with humic substances at 1 and 10 mg·L−1, respectively, were operated for nearly one year. The long-term operation of the reactors showed that the presence of humic substances in influent had no significant influence on nitrogen removal rates. Despite this, comparative metagenomics showed changes in anammox microbiota structure during the exposure to humic substance; e.g., the relative abundance of Candidatus Kuenenia was lower in HS10 (18.5%) than that in HS0 (22.8%) and HS1 (21.7%). More specifically, a lower level of humic substances (1 mg·L−1) in influent led to an increase of genes responsible for signal transduction, likely due to the role of humic substances as electron shuttles. In contrast, a high level of humic substances (10 mg·L−1) resulted in a slight decrease of functional genes associated with anammox metabolism. This may partially be due to the biodegradation of the humic substances. In addition, the lower dosage of humic substances (1 mg·L−1) also stimulated the abundance of hzs and hdh, which encode two important enzymes in anammox reaction. Overall, this study indicated that the anammox system could work stably over a long period under humic substances, and that the process was feasible for leachate treatment.
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Carbon and nitrogen removal through “Candidatus Brocadia sinica”-dominated simultaneous anammox and denitrification (SAD) process treating saline wastewater. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ye L, Li D, Zhang J, Zeng H. Fast start-up of anammox process with mixed activated sludge and settling option. ENVIRONMENTAL TECHNOLOGY 2018; 39:3088-3095. [PMID: 28859547 DOI: 10.1080/09593330.2017.1375016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 08/25/2017] [Indexed: 06/07/2023]
Abstract
In this study, successful start-up of the anaerobic ammonium oxidation (anammox) process in a sequencing batch reactor (SBR) was achieved by seeding mixed activated sludge which included aerobic sludge, anaerobic sludge, simultaneous partial nitrification, anammox and denitrification (SNAD) sludge, and anammox sludge with low activity at a 2200:2100:5:2 volume ratio. On day 15, the effective anammox activity was attained in SBR, with the specific total nitrogen removal rate (SRR) of 0.214 gNg-1 VSSd-1. The total nitrogen removal rate (NRR) increased to 230 gNm-3 d-1 by gradually reducing the setting time to 10 min. With the nitrogen loading rate (NLR) up to 506 gNm-3 d-1, the total NRR of the SBR reached 433 gNm-3 d-1 during stationary phase. Candidatus Brocadia was detected as predominant functional microbes in the anammox SBR. The results demonstrated the feasibility of seeding mixed activated sludge to start-up an anammox SBR by settling option.
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Affiliation(s)
- Lihong Ye
- a Key Laboratory of Water Science and Water Environment Recovery Engineering , Beijing University of Technology , Beijing , People's Republic of China
| | - Dong Li
- a Key Laboratory of Water Science and Water Environment Recovery Engineering , Beijing University of Technology , Beijing , People's Republic of China
| | - Jie Zhang
- a Key Laboratory of Water Science and Water Environment Recovery Engineering , Beijing University of Technology , Beijing , People's Republic of China
- b State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin , People's Republic of China
| | - Huiping Zeng
- a Key Laboratory of Water Science and Water Environment Recovery Engineering , Beijing University of Technology , Beijing , People's Republic of China
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Li J, Bai L, Qiang Z, Dong H, Wang D. Nitrogen removal through "Candidatus Brocadia sinica" treating high-salinity and low-temperature wastewater with glycine addition: Enhanced performance and kinetics. BIORESOURCE TECHNOLOGY 2018; 270:755-761. [PMID: 30279101 DOI: 10.1016/j.biortech.2018.09.101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 09/16/2018] [Accepted: 09/18/2018] [Indexed: 06/08/2023]
Abstract
Freshwater-derived anaerobic ammonia oxidation (anammox) bacteria ("Candidatus Brocadia sinica") were investigated to remove nitrogen from high-salinity and low-temperature wastewater with glycine addition. The reactor was operated at 15 ± 0.5 °C with influent pH of 7.5 ± 0.1. When glycine were 0.2, 0.4, and 0.6 mM, respectively, nitrite removal rate (NRR) increased by 27.7%, 47.3%, and 70.4% accordingly. Optimal ammonia removal rate (0.32 kg/(m3·d)) and NRR (0.45 kg/(m3·d)) were achieved at 0.8 mM glycine. Effect resulting from glycine on nitrite reductase was higher than hydrazine synthase. Moreover, ΔNO2--N/ΔNH4+-N increased with glycine addition while ΔNO3--N/ΔNH4+-N first increased and then decreased. The remodified Logistic model and modified Boltzmann model were appropriate to describe nitrogen removal with glycine addition. Kinetic parameter λ achieved through the remodified Logistic model revealed that "Candidatus Brocadia sinica" had a shorter lag phase than that of marine anammox bacteria.
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Affiliation(s)
- Jin Li
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Lijing Bai
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Zhimin Qiang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Huiyu Dong
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Dan Wang
- National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China
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Gu Z, Li Y, Yang Y, Xia S, Hermanowicz SW, Alvarez-Cohen L. Inhibition of anammox by sludge thermal hydrolysis and metagenomic insights. BIORESOURCE TECHNOLOGY 2018; 270:46-54. [PMID: 30212773 DOI: 10.1016/j.biortech.2018.08.132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/29/2018] [Accepted: 08/30/2018] [Indexed: 06/08/2023]
Abstract
Anaerobic ammonium oxidation (anammox) would be a feasible treatment method for thermal hydrolysis processed sidestream (THPS). Short-term study revealed that the 1/20 diluted THPS caused a 28% decrease of specific anammox activity. The MBR achieved a volumetric nitrogen loading rate of 3.64 kg/(m3·d) with undiluted regular sidestream (RS) fed, while the reactor crashed with 70% diluted THPS as feed. The ratio of produced NO3--N to consumed NH4+-N also decreased compared with RS feeding. Candidatus brocadia was the major anammox bacteria species with the average abundance of 33.3% (synthetic wastewater), 6.42% (RS) and 2.51% (THPS). The abundances of metagenome bins for dissimilatory nitrate reduction to ammonium (DNRA) increased in the system with THPS compared with RS. The reason for the inhibition of anammox by THPS could be the high content of organic carbon in THPS, which caused the over-population of heterotrophic bacteria, i.e. DNRA bacteria, leading to anammox bacteria washout.
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Affiliation(s)
- Zaoli Gu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA
| | - Yuan Li
- Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA; Tsinghua-Berkeley Shenzhen Institute, University of California, Berkeley, CA 94720, USA
| | - Yifeng Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA
| | - Siqing Xia
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai 200092, China.
| | - Slawomir W Hermanowicz
- Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA; Tsinghua-Berkeley Shenzhen Institute, University of California, Berkeley, CA 94720, USA
| | - Lisa Alvarez-Cohen
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA
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Sengar A, Aziz A, Farooqi IH, Basheer F. Development of denitrifying phosphate accumulating and anammox micro-organisms in anaerobic hybrid reactor for removal of nutrients from low strength domestic sewage. BIORESOURCE TECHNOLOGY 2018; 267:149-157. [PMID: 30014993 DOI: 10.1016/j.biortech.2018.07.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 07/03/2018] [Accepted: 07/06/2018] [Indexed: 06/08/2023]
Abstract
Low strength domestic sewage was treated in an Anaerobic Hybrid Reactor. The first phase was focused on the enhancement of denitrifying phosphate accumulating organisms (DPAOs) for the concurrent removal of nitrogen and phosphate. 16S rRNA gene confirmed the presence of Flavobacterium spp. and Pseudomonasalcaligenes spp. which are dominant DPAOs. The second phase was the anaerobic ammonium oxidation (anammox) enrichment phase, and it exhibited much higher chemical oxygen demand (87%) and nitrogen removal (90%) as compared to the first phase. However, it had failed to remove the phosphate from the system. In case of anammox, the dominant specie detected was Candidatus Brocadia, along with minor counts of Candidatus Jettenia and Anammoxoglobus Propionicus. Apart from that, ammonia oxidizing bacteria (Nitrosomonas europaea, Nitrosomonas nitrosa) and methanogens (Methanosaeta, Methanobacterium) were also detected in the system. This study showed the feasibility of anammox species over DPAOs in treating domestic sewage.
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Affiliation(s)
- Ashish Sengar
- Department of Civil Engineering, Z.H. College of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
| | - Asad Aziz
- Department of Civil Engineering, Z.H. College of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
| | - Izharul Haq Farooqi
- Department of Civil Engineering, Z.H. College of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
| | - Farrukh Basheer
- Department of Civil Engineering, Z.H. College of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India.
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40
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Wang Q, Wang Y, Lin J, Tang R, Wang W, Zhan X, Hu ZH. Selection of seeding strategy for fast start-up of Anammox process with low concentration of Anammox sludge inoculum. BIORESOURCE TECHNOLOGY 2018; 268:638-647. [PMID: 30142617 DOI: 10.1016/j.biortech.2018.08.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/13/2018] [Accepted: 08/15/2018] [Indexed: 06/08/2023]
Abstract
The long start-up time and large demand of Anammox seed sludge limit the practical application of Anammox process. In this study, the seeding strategy of fast start-up of Anammox process using 2.0 g VSS L-1 of anaerobic granular sludge (AGS) or activated sludge (AS) with various low concentration of Anammox sludge as inoculum was investigated. In laboratory scale, the start-up (achieving 70% TN removal) was shortened from 21 days to 5 days when Anammox sludge concentration increased from 0.02 g VSS L-1 to 0.2 g VSS L-1 with 2 g VSS L-1 AS as inoculum, and 16S rDNA analysis indicated the enrichment of Anammox bacteria, while the start-up failed with AGS. In pilot scale, the start-up was achieved in 10 days using 0.02 g VSS L-1 of Anammox sludge and 2.0 g VSS L-1 of AS, confirming the fast start-up of Anammox process with low concentration of Anammox sludge.
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Affiliation(s)
- Qintong Wang
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
| | - Yulan Wang
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jinbiao Lin
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
| | - Rui Tang
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
| | - Wei Wang
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xinmin Zhan
- College of Engineering and Informatics, National University of Ireland, Galway, Ireland
| | - Zhen-Hu Hu
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, China.
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Saleem M, Lavagnolo MC, Concheri G, Stevanato P, Squartini A, Spagni A. Application of anaerobic dynamic membrane bioreactor (AnDMBR) for the successful enrichment of Anammox bacteria using mixed anaerobic and aerobic seed sludge. BIORESOURCE TECHNOLOGY 2018; 266:532-540. [PMID: 30007193 DOI: 10.1016/j.biortech.2018.06.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/23/2018] [Accepted: 06/28/2018] [Indexed: 06/08/2023]
Abstract
This study investigated a novel bioreactor configuration coupled with a side-stream dynamic membrane (DM) for Anammox enrichment as an alternative for conventional membrane. Bioreactor was fed with synthetic feed and seeded with a mix of anaerobic and aerobic sludge. In situ mechanical cleaning was employed for DM cleaning. DM development and performance was analysed over two polyamide-nylon meshes (200 and 52 µm). Solid-liquid separation of 52 µm mesh outperformed 200 µm with an average effluent turbidity of 2.4 ± 0.1 NTU. The system was operated at a maximum nitrogen loading rate of 696 mg-N L-1 d-1 and achieved a maximum nitrogen removal rate of 611.6 mg-N L-1 d-1. At steady state, the average ammonium, nitrite and total nitrogen removal efficiencies were 87 ± 0.6%, 98.5 ± 0.15% and 87.5 ± 0.56% respectively. Digital realtime PCRSequence analysis showed that Planctomycetales belonging to ascertained Anammox-specific genera progressively increased their presence in the reactor consistently with its nitrogen removal performance.
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Affiliation(s)
- Mubbshir Saleem
- Department of Civil, Environmental and Architectural Engineering, University of Padova, via Marzolo 9, 35131 Padova, Italy.
| | - Maria Cristina Lavagnolo
- Department of Civil, Environmental and Architectural Engineering, University of Padova, via Marzolo 9, 35131 Padova, Italy
| | - Giuseppe Concheri
- Department of Agronomy, Animals, Food, Natural Resources and Environment DAFNAE, University of Padova, Viale dell'Università 15, 35020 Legnaro, PD, Italy
| | - Piergiorgio Stevanato
- Department of Agronomy, Animals, Food, Natural Resources and Environment DAFNAE, University of Padova, Viale dell'Università 15, 35020 Legnaro, PD, Italy
| | - Andrea Squartini
- Department of Agronomy, Animals, Food, Natural Resources and Environment DAFNAE, University of Padova, Viale dell'Università 15, 35020 Legnaro, PD, Italy
| | - Alessandro Spagni
- Laboratory of Technologies for Waste, Wastewater and Raw Materials Management, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), via M.M. Sole 4, 40129 Bologna, Italy
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Cho K, Choi M, Lee S, Bae H. Negligible seeding source effect on the final ANAMMOX community under steady and high nitrogen loading rate after enrichment using poly(vinyl alcohol) gel carriers. CHEMOSPHERE 2018; 208:21-30. [PMID: 29859423 DOI: 10.1016/j.chemosphere.2018.05.155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 05/11/2018] [Accepted: 05/25/2018] [Indexed: 06/08/2023]
Abstract
This study investigated the effect of seeding source on the mature anaerobic ammonia oxidation (ANAMMOX) bacterial community niche in continuous poly(vinyl alcohol) (PVA) gel systems operated under high nitrogen loading rate (NLR) condition. Four identical column reactors packed with PVA gels were operated for 182 d using different seeding sources which had distinct community structures. The ANAMMOX reaction was achieved in all the bioreactors with comparable total and ANAMMOX bacterial 16S rRNA gene quantities. The bacterial community structure of the bioreactors became similar during operation; some major bacteria were commonly found. Interestingly, one ANAMMOX species, "Candidatus Brocadia sinica", was conclusively predominant in all the bioreactors, even though different seeding sludges were used as inoculum source, possibly due to the unique physiological characteristics of "Ca. Brocadia sinica" and the operating conditions (i.e., PVA gel-based continuous system and 1.0 kg-N/(m3·d) of NLR). The results clearly suggest that high NLR condition is a more significant factor determining the final ANAMMOX community niche than is the type of seeding source.
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Affiliation(s)
- Kyungjin Cho
- Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-Gu, Seoul 02792, Republic of Korea
| | - Minkyu Choi
- Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-Gu, Seoul 02792, Republic of Korea; Department of Civil and Environmental Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-Gu, Seoul 03722, Republic of Korea
| | - Seockheon Lee
- Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-Gu, Seoul 02792, Republic of Korea.
| | - Hyokwan Bae
- Department of Civil and Environmental Engineering, Pusan National University, 63 Busandeahak-ro, Geumjeong-Gu, Busan 46241, Republic of Korea.
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Wang X, Yan Y, Gao D. The threshold of influent ammonium concentration for nitrate over-accumulation in a one-stage deammonification system with granular sludge without aeration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 634:843-852. [PMID: 29653428 DOI: 10.1016/j.scitotenv.2018.04.053] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 04/04/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
Low-strength ammonium is still a challenge for the mainstream deammonification because of nitrate over-accumulation. In this study, the threshold of influent ammonium concentration of one-stage deammonification system with granular sludge was investigated, by stepwise decreasing influent ammonium from high concentrations (280mg/L to 140mg/L) to the low concentration (70mg/L) in 108d at 32°C without aeration. Results showed that, under 70mg/L NH4+-N, ΔNO3--N/ΔNH4+-N ratio increased to 0.2, deviated from the theoretical value of 0.11, with ammonium and TN removal efficiencies of 91% and 71%, respectively. However, under both high ammonium concentrations (280mg/L and 140mg/L), nitrate production stabilized at only 13%. Chloroflexi, Planctomycetes and Proteobacteria contributed >70% of the communities under all three ammonium concentrations. As influent ammonium decreasing, the relative abundances of bacteria for anammox, aerobic oxidizing and denitrifying decreased, while NOB (nitrite oxidizing bacteria) abundance increased greatly. So 70mg/L was the threshold of influent ammonium concentration for stable deammonification without organic influent. It was the decrease of functional bacteria and overgrowth of NOB that worsen the deammonification performance under low-strength ammonium.
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Affiliation(s)
- Xiaolong Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yuegen Yan
- Puritek (Nanjing) Co. Ltd, Nanjing 210023, China
| | - Dawen Gao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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Yang S, Yao G. Simultaneous removal of concentrated organics, nitrogen and phosphorus nutrients by an oxygen-limited membrane bioreactor. PLoS One 2018; 13:e0202179. [PMID: 30161154 PMCID: PMC6116941 DOI: 10.1371/journal.pone.0202179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 07/30/2018] [Indexed: 01/29/2023] Open
Abstract
Simultaneous removal of organics, nitrogen and phosphorus was achieved in a bench-scale oxygen-limited membrane bioreactor (OLMBR). Due to the limited dissolved oxygen (~ 0.2 mg/L equilibrium concentration) and the increased sludge concentration associated with the hollow fiber membrane, the OLMBR was endowed with an excellent performance on the removal of multi-pollutants. The optimized removal efficiencies of COD, nitrogen (N), and total phosphorus (TP) were approximately 95.5%, 90.0% and 82.6%, respectively (COD/N/P = 500:10:1, influent loading = 5.0 kg COD·m-3·d-1, 35°C). Mass balance and bacterial community analysis indicated that the removal of organic carbon was mainly achieved by the methane production process (67.6%). Short-cut nitrification-denitrification (SCND) was observed as the primary denitrification process in the OLMBR, in which the concentrated organic compounds served as the electron donors for denitrification. Nitrosomonas was observed to be the predominant ammonium-oxidizing bacteria, while nitrite-oxidizing bacteria were almost absent in the microbial community as revealed by the high-throughput sequencing technique. In addition, Euryarchaeota and Candidatus, which were well associated with the process of denitrifying anaerobic methane oxidation, were also detected. Sludge absorption was the main route for TP removal in the OLMBR, and the production of PH3 gas also accounted for 19.4% of TP removal. This study suggested that the interception effect of hollow fiber membrane provided higher sludge concentration, therefore offering more bacteria for pollutant removal. The OLMBR can be used for simultaneous removal of highly concentrated organics and nutrients in livestock and poultry breeding wastewater.
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Affiliation(s)
- Shengyun Yang
- College of Architecture and Environment, Sichuan University, Chengdu, China
| | - Gang Yao
- College of Architecture and Environment, Sichuan University, Chengdu, China
- * E-mail:
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Kanders L, Beier M, Nogueira R, Nehrenheim E. Sinks and sources of anammox bacteria in a wastewater treatment plant - screening with qPCR. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 78:441-451. [PMID: 30101779 DOI: 10.2166/wst.2018.318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The deammonification process, which includes nitritation and anammox bacteria, is an energy-efficient nitrogen removal process. Starting up an anammox process in a wastewater treatment plant (WWTP) is still widely believed to require external seeding of anammox bacteria. To demonstrate the principle of a non-seeded anammox start-up, anammox bacteria in potential sources must be quantified. In this study, seven digesters, their substrates and reject water were sampled and quantitative polymerase chain reaction (qPCR) was used to quantify both total and viable anammox bacteria. The results show that mesophilic digesters fed with nitrifying sludge (with high sludge ages) can be classified as a reliable source of anammox bacteria. Sludge hygienization and dewatering of digestate reduce the amount of anammox bacteria by one to two orders of magnitude and can be considered as a sink. The sampled reject waters contained on average >4.0 × 104 copies mL-1 and the majority of these cells (>87%) were viable cells. Furthermore, plants with side-stream anammox treatment appear to have higher overall quantities of anammox bacteria than those without such treatment. The present study contributes to the development of sustainable strategies for both start-up of anammox reactors and the possibility of improving microbial management in WWTPs.
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Affiliation(s)
- Linda Kanders
- Purac AB, Box 1146, SE-221 05 Lund, Sweden E-mail: ; School of Business, Society and Engineering, Mälardalen University, Box 883, SE-721 23 Västerås, Sweden
| | - Maike Beier
- Institute for Sanitary Engineering and Waste Management (ISAH), Leibniz Universitaet Hannover, Welfengarten 1, 30167 Hannover, Germany
| | - Regina Nogueira
- Institute for Sanitary Engineering and Waste Management (ISAH), Leibniz Universitaet Hannover, Welfengarten 1, 30167 Hannover, Germany
| | - Emma Nehrenheim
- School of Business, Society and Engineering, Mälardalen University, Box 883, SE-721 23 Västerås, Sweden
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46
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Nitrogen removal performance and microbial community structure in the start-up and substrate inhibition stages of an anammox reactor. J Biosci Bioeng 2018. [DOI: 10.1016/j.jbiosc.2018.02.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gonzalez-Martinez A, Muñoz-Palazon B, Rodriguez-Sanchez A, Gonzalez-Lopez J. New concepts in anammox processes for wastewater nitrogen removal: recent advances and future prospects. FEMS Microbiol Lett 2018; 365:4847881. [DOI: 10.1093/femsle/fny031] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/07/2018] [Indexed: 01/26/2023] Open
Affiliation(s)
| | - Barbara Muñoz-Palazon
- Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, 18071 Granada, Spain
| | | | - Jesus Gonzalez-Lopez
- Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, 18071 Granada, Spain
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Start-Up and Aeration Strategies for a Completely Autotrophic Nitrogen Removal Process in an SBR. BIOMED RESEARCH INTERNATIONAL 2018; 2017:1089696. [PMID: 29387714 PMCID: PMC5745774 DOI: 10.1155/2017/1089696] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Accepted: 11/23/2017] [Indexed: 11/22/2022]
Abstract
The start-up and performance of the completely autotrophic nitrogen removal via nitrite (CANON) process were examined in a sequencing batch reactor (SBR) with intermittent aeration. Initially, partial nitrification was established, and then the DO concentration was lowered further, surplus water in the SBR with high nitrite was replaced with tap water, and continuous aeration mode was turned into intermittent aeration mode, while the removal of total nitrogen was still weak. However, the total nitrogen (TN) removal efficiency and nitrogen removal loading reached 83.07% and 0.422 kgN/(m3·d), respectively, 14 days after inoculating 0.15 g of CANON biofilm biomass into the SBR. The aggregates formed in SBR were the mixture of activated sludge and granular sludge; the volume ratio of floc and granular sludge was 7 : 3. DNA analysis showed that Planctomycetes-like anammox bacteria and Nitrosomonas-like aerobic ammonium oxidization bacteria were dominant bacteria in the reactor. The influence of aeration strategies on CANON process was investigated using batch tests. The result showed that the strategy of alternating aeration (1 h) and nonaeration (1 h) was optimum, which can obtain almost the same TN removal efficiency as continuous aeration while reducing the energy consumption, inhibiting the activity of NOB, and enhancing the activity of AAOB.
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Xu X, Liu G, Wang Y, Zhang Y, Wang H, Qi L, Wang H. Analysis of key microbial community during the start-up of anaerobic ammonium oxidation process with paddy soil as inoculated sludge. J Environ Sci (China) 2018; 64:317-327. [PMID: 29478653 DOI: 10.1016/j.jes.2017.06.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/05/2017] [Accepted: 06/21/2017] [Indexed: 06/08/2023]
Abstract
A sequencing batch reactor (SBR)-anaerobic ammonium oxidation (anammox) system was started up with the paddy soil as inoculated sludge. The key microbial community structure in the system along with the enrichment time was investigated by using molecular biology methods (e.g., high-throughput 16S rRNA gene sequencing and quantitative PCR). Meanwhile, the influent and effluent water quality was continuously monitored during the whole start-up stage. The results showed that the microbial diversity decreased as the operation time initially and increased afterwards, and the microbial niches in the system were redistributed. The anammox bacterial community structure in the SBR-anammox system shifted during the enrichment, the most dominant anammox bacteria were CandidatusJettenia. The maximum biomass of anammox bacteria achieved 1.68×109copies/g dry sludge during the enrichment period, and the highest removal rate of TN achieved around 75%.
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Affiliation(s)
- Xianglong Xu
- School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China.
| | - Guohua Liu
- School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China.
| | - Yuanyuan Wang
- School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China
| | - Yuankai Zhang
- School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China
| | - Hao Wang
- School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China
| | - Lu Qi
- School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China
| | - Hongchen Wang
- School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China.
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Annavajhala MK, Kapoor V, Santo-Domingo J, Chandran K. Comammox Functionality Identified in Diverse Engineered Biological Wastewater Treatment Systems. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 2018; 5:110-116. [PMID: 31338378 PMCID: PMC6650159 DOI: 10.1021/acs.estlett.7b00577] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Complete ammonia oxidation (comammox) to nitrate by certain Nitrospira-lineage bacteria (CMX) could contribute to overall nitrogen cycling in engineered biological nitrogen removal (BNR) processes in addition to the more well-documented nitrogen transformations by ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB), and anaerobic ammonia-oxidizing (anammox) bacteria (AMX). A metagenomic survey was conducted to quantify the presence and elucidate the potential functionality of CMX in 16 full-scale BNR configurations treating mainstream or sidestream wastewater. CMX proposed to date were combined with previously published AOB, NOB, and AMX genomes to create an expanded database for alignment of metagenomic reads. CMX-assigned metagenomic reads accounted for between 0.28 and 0.64% of total coding DNA sequences in all BNR configurations. Phylogenetic analysis of key nitrification functional genes amoA, encoding the α-subunit of ammonia monooxygenase, haoB, encoding the β-subunit of hydroxylamine oxidoreductase, and nxrB, encoding the β-subunit of nitrite oxidoreductase, confirmed that each BNR system contained coding regions for production of these enzymes by CMX specifically. Ultimately, the ubiquitous presence of CMX bacteria and metabolic functionality in such diverse system configurations emphasizes the need to translate novel bacterial transformations to engineered biological process interrogation, operation, and design.
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Affiliation(s)
- Medini K. Annavajhala
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
| | - Vikram Kapoor
- Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268, United States
| | - Jorge Santo-Domingo
- Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268, United States
| | - Kartik Chandran
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Corresponding Author: Department of Earth and Environmental Engineering, Columbia University, 500 W. 120th St., New York, NY 10027. . Phone: (212) 854-9027. Fax: (212) 854-7081
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