1
|
Lin J, Zhou X, Lu X, Xu Y, Wei Z, Ruan A. Grain size distribution drives microbial communities vertically assemble in nascent lake sediments. Environ Res 2023; 227:115828. [PMID: 37011792 DOI: 10.1016/j.envres.2023.115828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 05/08/2023]
Abstract
Sediment microbes are crucial for maintaining biogeochemical cycles in aquatic ecosystems, yet the influence of sediment geophysical structure on microbial communities remains unclear. In this study, we collected sediment cores from a nascent reservoir in its initial stage of deposition and utilized the multifractal model to comprehensively characterize the heterogeneity of sediment grain size and pore space. Our results demonstrate that both environmental physiochemistry and microbial community structures varied significantly with depth, with the grain size distribution (GSD) being the key driver of sediment microbial diversity, as revealed by the partial least squares path model (PLS-PM) method. GSD can potentially impact microbial communities and biomass by controlling pore space and organic matter. Overall, this study represents the first attempt to apply soil multifractal models into the integrated description of physical structure in sediment. Our findings provide valuable insights into the vertical distribution of microbial communities.
Collapse
Affiliation(s)
- Jie Lin
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Xiaotian Zhou
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Xiang Lu
- Department of Biosciences, Centre for Biogeochemistry in the Anthropocene, University of Oslo, 0316 Oslo, Norway
| | - Yaofei Xu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Zhipeng Wei
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Aidong Ruan
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China.
| |
Collapse
|
2
|
Ning Y, Liu Y, Guo H, Wang X, Yang Y, Zhou D. Effect of the lignocellulolytic Psychrotroph Lelliottia sp. on bacterial community succession in corn straw compost. Environ Sci Pollut Res Int 2023; 30:66346-66358. [PMID: 37095218 DOI: 10.1007/s11356-023-27092-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 04/13/2023] [Indexed: 05/03/2023]
Abstract
This study aimed to explore the effect of an inoculation, Lelliottia sp., on the corn straw compost's physico-chemical properties, composition, and the succession of bacterial community structure. The compost community composition and succession changed after Lelliottia sp. inoculation. Inoculation increased the bacterial community diversity and abundance in the compost to promote composting. The inoculated group entered the thermophilic stage on the first day, lasting 8 days. Judging the pile maturity based on the carbon:nitrogen ratio and germination index values, the inoculated group reached the maturity standard, which was 6 days faster than the control group. The relationship between environmental factors and bacterial communities was comprehensively analyzed using redundancy analysis. Temperature and carbon:nitrogen ratio were the main environmental factors driving the succession of bacterial communities, to provide basic information on the changes of physicochemical indexes and bacterial community succession in Lelliottia sp. inoculated maize straw composting, providing assistance for practical composting applications of this strain.
Collapse
Affiliation(s)
- Yucui Ning
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yu Liu
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Houyu Guo
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Xu Wang
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yanna Yang
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Dongxing Zhou
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| |
Collapse
|
3
|
Li Y, Dong R, Guo J, Wang L, Zhao J. Effects of Mn 2+ and humic acid on microbial community structures, functional genes for nitrogen and phosphorus removal, and heavy metal resistance genes in wastewater treatment. J Environ Manage 2022; 313:115028. [PMID: 35398637 DOI: 10.1016/j.jenvman.2022.115028] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/26/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
Considering the wide occurrence of Mn2+ and humic acid (HA) in environmental media, the effects of Mn2+ (5-16 mg/L) and HA (10 mg/L) on microbial community structures, functional genes for nitrogen and phosphorus removal, and heavy metal resistance genes (HMRGs) were investigated in wastewater treatment using sequencing batch bioreactors (SBRs). The treatment efficiencies of influent chemical oxygen demands (COD), NH4+-N, and PO43--P were unaffected during the entire operational processes irrespective of whether Mn2+ and HA were supplied. Although the functional prediction of genetic information via sequencing analysis showed that the microbial activity was not influenced by Mn2+ and HA from different SBRs, the abundance of dominant phyla (Proteobacteria, Actinobacteriota, Firmicutes, and Bacteroidota), classes (Saccharimonadia, Gammaproteobacteria, and Bacilli), and genera (unidentified_Chloroplast, TM7a, Micropruina, Candidatus_Competibacter, Lactobacillus, OLB12, and Pediococcus) was different. Compared to the SBR without Mn2+ and HA supplementation, the abundance of functional genes for nitrogen and phosphorus removal (narG, nirS, nosZ, ppk, and phoD) and HMRGs (corA and mntA) significantly increased under Mn2+ stress, but significantly decreased with the addition of HA except for genes nirS and ppk. The abundance of genes corA and mntA was related to the partially dominant microbes and functional genes, and might be reduced by supplying HA. This study provides insight into the effects of Mn2+ and HA on functional genes for nitrogen and phosphorus removal and HMRGs in wastewater treatment.
Collapse
Affiliation(s)
- Yonghui Li
- School of Life Sciences, Luoyang Normal University, Luoyang, 471934, China
| | - Rong Dong
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Jiaxin Guo
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Lan Wang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Jianguo Zhao
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China.
| |
Collapse
|
4
|
He Q, Shen Y, Li R, Peng T, Chen N, Wu Z, Feng C. Rice washing drainage (RWD) embedded in poly(vinyl alcohol)/sodium alginate as denitrification inoculum for high nitrate removal rate with low biodiversity. Bioresour Technol 2022; 355:127288. [PMID: 35545208 DOI: 10.1016/j.biortech.2022.127288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/03/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Immobilization technology with low maintenance is a promising alternative to enhance nitrate removal from water. In this study, washing rice drainage (RWD) was immobilized by poly(vinyl alcohol)/sodium alginate (PVA/SA) to obtain RWD-PVA/SA gel beads as inoculum for denitrification. When initial nitrate concentration was 50 mg N/L, nitrate was effectively removed at rates of 50-600 mg/(L∙d) using acetate as carbon source (C/N = 1.25). Arrhenius activation energy (Ea) of nitrate oxidoreductase was 28.64 kJ/mol for the RWD-PVA/SA gel beads. Temporal and spatial variation in microbial community structures were revealed along with RWD storage and in the reactors by Illumina high-throughput sequencing technology. RWD-PVA/SA gel beads has a simple (operational taxonomic units (OTUs) 〈100). Dechloromonas, Pseudomonas, Flavobacterium and Acidovorax were the most four dominant genera in the denitrification reactors inoculated with RWD-PVA/SA gel beads. This study provides an inoculum for denitrification with high nitrate removal performance and simple microbial community structures.
Collapse
Affiliation(s)
- Qiaochong He
- School of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China; School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
| | - Yunpeng Shen
- School of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Rui Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Tong Peng
- Beijing Nature Science and Technology Development Co. LTD, No. 2 Ronghua Nan Road, Beijing Economic-Technological Development Area, China
| | - Nan Chen
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
| | - Zhenjun Wu
- School of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Chuanping Feng
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China.
| |
Collapse
|
5
|
Li Y, Zhao J, Li Y, Jin B, Wang L, Li Y. Effects of combined 4-chlorophenol and Cu 2+ on functional genes for nitrogen and phosphorus removal and heavy metal resistance genes in sequencing batch bioreactors. Bioresour Technol 2022; 346:126666. [PMID: 34990861 DOI: 10.1016/j.biortech.2021.126666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/25/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
The effects of combined 4-chlorophenol (4-CP) and Cu2+ on microbial community structures, functional genes for nitrogen and phosphorus removal, and heavy metal resistance genes (HMRGs) were explored in wastewater treatment using sequencing batch bioreactors (SBRs). Compared to influent 4-CP (2.3-4.5 mg/L), the removal of pollutants including chemical oxygen demands (COD), NH4+-N, PO43--P, and 4-CP was inhibited under Cu2+ stress (5 mg/L). The effects of Cu2+ on microbial community structures were more significant than those of 4-CP with respect to operational time, while the dominant function from gene information was not affected with or without influent 4-CP and Cu2+ via sequencing analysis. The influent 4-CP and Cu2+ largely influenced the dynamic changes of functional genes and HMRGs, and the abundance of partial HMRGs was correlated to the functional genes and dominant genera. This study provides insights into the treatment of combined chlorophenols and Cu2+ in wastewater.
Collapse
Affiliation(s)
- Yahe Li
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jianguo Zhao
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Yu Li
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Baodan Jin
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Lan Wang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Yanfei Li
- Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, China.
| |
Collapse
|
6
|
Choi D, Cho K, Hwang K, Yun W, Jung J. Achieving stable nitrogen removal performance of mainstream PN-ANAMMOX by combining high-temperature shock for selective recovery of AOB activity. Sci Total Environ 2021; 794:148582. [PMID: 34323753 DOI: 10.1016/j.scitotenv.2021.148582] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/07/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
This paper describes the new concept of the mainstream partial nitritation (PN)-anaerobic ammonium oxidation (ANAMMOX) combined with a high-temperature shock strategy for the selective recovery of ammonia-oxidizing bacteria (AOB) activity. In the preliminary test, the temperature shock condition for PN was optimized (60 °C and > 20 min). Based on this, the implementation strategy in a continuous stirred tank reactor (CSTR) system was studied further, and the polyvinyl alcohol (PVA)/sodium alginate carrier exposure ratio (ER) and dissolved oxygen (DO) concentration were considered as primary variables. The AOB activity was recovered selectively when the ER of the carrier ranged from 20 to 40%, and the DO was higher than 2.3 mg O2/L. This was not the case for nitrite-oxidizing bacteria (NOB) (AOB: 1.17±0.1 gNH4+-N/LCarrier/d, NOB: 0.34±0.1 gNO3--N/LCarrier/d). As a result, the activity of AOB was recovered selectively with a decrease in Nitrospira spp., which was verified by kinetic and microbial analyses for the AOB (KS, DO = 3.89 mgO2/L) and NOB (KS, DO = 1.14 mgO2/L). Eventually, the mainstream PN-ANAMMOX was achieved with a nitrogen removal efficiency of 81.5±3.3% for 95 days. The findings provide insight to establishing a stable mainstream PN-ANAMMOX process using a high-temperature shock strategy.
Collapse
Affiliation(s)
- Daehee Choi
- Department of Environmental Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-Si, Gyeongbuk 38541, South Korea
| | - Kyungjin Cho
- Water Cycle Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea; Division of Energy & Environment Technology, KIST School, Korea University of Science and Technology (UST), Seoul 02792, South Korea
| | - Kwanghyun Hwang
- GS Engineering and Construction Research Institute, GRAN SEOUL, 33 Jong-ro, Jongno-gu, Seoul, South Korea
| | - Wonsang Yun
- Department of Environmental Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-Si, Gyeongbuk 38541, South Korea
| | - Jinyoung Jung
- Department of Environmental Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-Si, Gyeongbuk 38541, South Korea.
| |
Collapse
|
7
|
Li Y, Wang J, Li B, Geng M, Wang Y, Zhao J, Jin B, Li Y. Response of extracellular polymeric substances and microbial community structures on resistance genes expression in wastewater treatment containing copper oxide nanoparticles and humic acid. Bioresour Technol 2021; 340:125741. [PMID: 34426248 DOI: 10.1016/j.biortech.2021.125741] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/04/2021] [Accepted: 08/07/2021] [Indexed: 06/13/2023]
Abstract
The extracellular polymeric substances (EPS) and microbial community structures were investigated in wastewater treatment containing copper oxide nanoparticles (CuO NPs) (reactor R1) and CuO NPs and humic acid (HA) (reactor R2) using both sequencing batch bioreactors (SBRs), and their response on resistance genes expression was analyzed. The removal of influent chemical oxygen demands (COD) and NH4+-N was moderately influenced under CuO NPs (5 mg/L) stress, while the function of HA (10 mg/L) was not reflected. However, the EPS production and microbial community were affected by the HA addition. The expression of different antibiotic resistance genes (ARGs), metal-resistance genes (MRGs), and intI1 was related to the primary compositions of polysaccharides and proteins in EPS and different microbial communities at the genus level. Furthermore, the expression of resistance genes was not stimulated under CuO NPs stress, and supplying HA was suggested to reduce their expression in wastewater treatment.
Collapse
Affiliation(s)
- Yu Li
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Jing Wang
- Key Laboratory of Marine Environment and Ecology (Ocean University of China), Ministry of Education, Qingdao 266100, China
| | - Bingyan Li
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Mengdan Geng
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Yan Wang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Jianguo Zhao
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Baodan Jin
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Yanfei Li
- Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, China.
| |
Collapse
|
8
|
Chen Q, Wu W, Zhang L, Wei F. Shifts in enzymatic activities and microbial community structures in the bioenhanced treatment of ship domestic sewage under microaerobic conditions. Environ Sci Pollut Res Int 2021; 28:51242-51250. [PMID: 33982250 DOI: 10.1007/s11356-021-14232-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
A bioenhancement strategy for improving the anaerobic degradation efficiency of ship domestic sewage under microaerobic conditions was proposed in this study. Strains Stenotrophomonas sp. MSPP05 and Prevotella sp. MSPP07 with high organic-degrading efficiency and extracellular hydrolase yield were used for the bioenhancement of activated sludge. In batch experiments, the removal rates of chemical oxygen demand and total nitrogen reached 94.5% and 66.9% after 72 h of degradation. The activities of dehydrogenase, extracellular amylase, and protease in the treatment group were 1.2, 1.4, and 2.0 times higher than those in the control group. Microbial community analysis showed that exogenous enhanced strains competed with original microorganisms and became dominant. One-stage continuous stirred tank reactor with bioenhanced activated sludge ran steadily for 90 days with average effluent COD and TN concentrations of 87.5 and 14.6 mg/L. The feasibility of improving organic-degrading efficiency through bioenhancement by using exogenous hydrolase-producing strains was confirmed under microaerobic conditions. This work provided a theoretical basis for improving treatment effects and developing a new technique for ship domestic sewage treatment.
Collapse
Affiliation(s)
- Qing Chen
- Marine Engineering College, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Wanqing Wu
- Marine Engineering College, Dalian Maritime University, Dalian, 116026, People's Republic of China.
| | - Linghua Zhang
- Environmental Science and Engineering College, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Fang Wei
- Marine Engineering College, Dalian Maritime University, Dalian, 116026, People's Republic of China
| |
Collapse
|
9
|
Wang S, Yuan R, Chen H, Wang F, Zhou B. Anaerobic biodegradation of four sulfanilamide antibiotics: Kinetics, pathways and microbiological studies. J Hazard Mater 2021; 416:125840. [PMID: 34492796 DOI: 10.1016/j.jhazmat.2021.125840] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 03/23/2021] [Accepted: 04/05/2021] [Indexed: 06/13/2023]
Abstract
Large amounts of sulfanilamide antibiotics (SAs) have been excreted into the manure. In this study, the anaerobic biodegradation of four kinds of SAs including sulfaquinoxaline (SQX), sulfamethoxazole (SMX), sulfamethoxine (SMD) and sulfathiazole (STZ) was investigated. The degradation rates of SQX and STZ decreased with the increase of the concentrations of other organics, but those of SMX and SMD were less affected. The average degradation rates of SAs were in the order of SMX >SMD ≈QX >STZ, with the best degradation rate constants of 0.30125, 0.14752, 0.16696, and 0.06577 /d, respectively. STZ had the greatest effect on the population richness of microbes, whereas SQX had the largest impact on the population diversity. The degradation rates of SAs were positively correlated with the abundances of Proteobacteria and Bacteroidetes, and negatively correlated with the abundance of Firmicutes. The common degradation pathways of SAs were S-N cleavage and substitution. The specific functional groups of SQX, SMX and SMD, including quinoxaline, isoxazole and pyrimidine rings, could be opened, but the thiazole ring of STZ was difficult to be decomposed. After the rings of the specific functional groups were opened, they would be further substituted or decomposed to be products with small molecules.
Collapse
Affiliation(s)
- Shaona Wang
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; CECEP&CIECC Huarui Technology Co., Ltd, Beijing 100034, China
| | - Rongfang Yuan
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Huilun Chen
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Fei Wang
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Beihai Zhou
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| |
Collapse
|
10
|
Han R, Liu L, Meng Y, Han H, Xiong R, Li Y, Chen L. Archaeal and bacterial community structures of rural household biogas digesters with different raw materials in Qinghai Plateau. Biotechnol Lett 2021; 43:1337-1348. [PMID: 33811593 DOI: 10.1007/s10529-021-03105-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/10/2021] [Indexed: 10/21/2022]
Abstract
The present study aims to investigate microbial community structures household biogas digesters with different raw materials in Qinghai Plateau rural. High-throughput 16S rRNA gene sequencing analysis revealed that Firmicutes, Bacteroidetes, and Proteobacteria are the most abundant bacterial phyla (64.08%). Prevotella group 7 was the most abundant genus in digester YL9 and YL10 (69.72% and 26.96%, respectively) using vegetable waste raw materials. Trichococcus exhibited the highest abundance (14.55%) in YL1 digester using sheep and pig manure. Clostridium sensu stricto 1 (13.89%) and Synergistaceae_uncultured (15.52%) comprised the highest abundances in digester YL5 with mixed raw materials (i.e., dairy manure, sheep manure, and human feces). In addition, Proteiniphilum and Pseudomonas exhibited the highest abundances among bacterial genera in YL4 digester using pig manure. Methanomicrobiales was the most dominant archaeal communities, ranging from 13.35% to 81.34% in abundance. Methanocorpusculum exhibited dominant abundances in all digesters using various raw materials. Methanogenium was the most abundant archaeal genera in YL4 and YL6 digesters, which consume pig manure as primary raw material. In addition, Methanosarcina and Methanosaeta exhibited the highest abundances in digester YL1 (55.03%) and YL9 (51.40%), respectively. Moreover, fermentation temperatures and pH both contributed to the archaeal and bacterial community structures in all the investigated digesters. Specially, fermentation temperature showed positive correlation with the abundances of Synergistaceae_uncultured, Methanogenium, and Methanosaeta, and pH was positively correlated with the abundances of Prevotella group 7 and Methanosarcina abundances.
Collapse
Affiliation(s)
- Rui Han
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Li Liu
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Yan Meng
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Hairong Han
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Rongbo Xiong
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Yi Li
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China.
| | - Laisheng Chen
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China.
| |
Collapse
|
11
|
Ding J, Wei D, An Z, Zhang C, Jin L, Wang L, Li Y, Li Q. Succession of the bacterial community structure and functional prediction in two composting systems viewed through metatranscriptomics. Bioresour Technol 2020; 313:123688. [PMID: 32590304 DOI: 10.1016/j.biortech.2020.123688] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/13/2020] [Accepted: 06/13/2020] [Indexed: 06/11/2023]
Abstract
In this work, Illumina MiSeq sequencing of cDNA from metatranscriptomics RNA reverse transcription were employed in combination with phylogenetic investigation of communities by reconstruction of unobserved states (PICRUSt) to estimate the dynamic variations of bacterial community structures and metabolic functions in a bioreactor and traditional composting process. Results showed that the change of bacterial α-diversity in the first three stages exhibit opposite trends in the two composting systems. The four most abundant phyla were the same in both systems (Firmicutes, Proteobacteria, Bacteroidetes and Actinobacteria), but the most abundant genera were different. The five most abundant genus-level groups in the bioreactor were Psychrobacter, Galbibacter, Pseudomonas, Staphylococcus and Flavobacterium. Within the same phase, the functional bacteria were dramatically different in the two composting processes. In the bioreactor system both bacterial community structure and metabolism function were greatly affected by available phosphorus.
Collapse
Affiliation(s)
- Jianli Ding
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Dan Wei
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
| | - Zhizhuang An
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Chengjun Zhang
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Liang Jin
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Lei Wang
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Yan Li
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Qiao Li
- Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| |
Collapse
|
12
|
Li X, Song Y, Wang F, Bian Y, Jiang X. Combined effects of maize straw biochar and oxalic acid on the dissipation of polycyclic aromatic hydrocarbons and microbial community structures in soil: A mechanistic study. J Hazard Mater 2019; 364:325-331. [PMID: 30384242 DOI: 10.1016/j.jhazmat.2018.10.041] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 09/13/2018] [Accepted: 10/14/2018] [Indexed: 06/08/2023]
Abstract
Whether the rhizodegradation of organic contaminants occurs in biochar- amended soil and its potential mechanisms have rarely been reported. Therefore, a study was conducted to investigate the combined effects of root exudates and biochar on the dissipation of polycyclic aromatic hydrocarbons (PAHs) and on the microbial community structures in soil. As a major component of the root exudates of ryegrass, oxalic acid (OA) significantly enhanced the dissipation of high- and low-ring PAHs in the studied soil with or without maize straw biochar amendment (p < 0.05). However, biochar alone enhanced only the dissipation of high-ring PAHs. The activities of three enzymes (urease, polyphenol oxidase and dehydrogenase) were the highest in soil amended with both maize straw biochar and 0.5 mg kg-1 of OA. Moreover, soil microbial biomass and the abundances of genera and genes associated with PAH degradation were significantly enhanced with the tandem application of biochar and OA (p < 0.05). These changes led to a synergetic effect of biochar and OA on the shifts in microbial community structures and on the dissipation of PAHs, especially for high-ring PAHs. The results in this study suggested that a combined biochar-rhizosphere approach should be a feasible remediation strategy for PAH-contaminated soil.
Collapse
Affiliation(s)
- Xiaona Li
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Song
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China.
| | - Fang Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongrong Bian
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Xin Jiang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| |
Collapse
|
13
|
Wei H, Wang L, Hassan M, Xie B. Succession of the functional microbial communities and the metabolic functions in maize straw composting process. Bioresour Technol 2018; 256:333-341. [PMID: 29459320 DOI: 10.1016/j.biortech.2018.02.050] [Citation(s) in RCA: 215] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/09/2018] [Accepted: 02/10/2018] [Indexed: 06/08/2023]
Abstract
Illumina MiSeq sequencing and phylogenetic investigation of communities by reconstruction of unobserved states (PICRUSt) were applied to study the dynamic changes and effects of microbial community structures as well as the metabolic function of bacterial community in maize straw composting process. Results showed that humic acid contents in loosely combined humus (HA1) and stably combined humus (HA2) increased after composting and Staphylococcus, Cellulosimicrobium and Ochrobactrum possibly participated in the transformation of the process. The bacterial communities differed in different stages of the composting. Firmicutes, Proteobacteria, Bacteroidetes and Actinobacteria were reported the dominant phyla throughout the process and the relative abundance of the dominant phyla varied significantly (p < 0.05) over time. Moreover, the total phosphorus (TP) had the greatest influence on the microbial community structure among C/N ratio, available phosphorus (AP) and humic substances. Metabolism, cellular processes and environmental information processing might be the primary functions of microbial community during the composting.
Collapse
Affiliation(s)
- Huawei Wei
- Key Laboratory of Urbanization and Ecological Restoration of Shanghai, School of Ecology & Environmental Science, East China Normal University, Shanghai 200241, China
| | - Liuhong Wang
- Key Laboratory of Urbanization and Ecological Restoration of Shanghai, School of Ecology & Environmental Science, East China Normal University, Shanghai 200241, China
| | - Muhammad Hassan
- Key Laboratory of Urbanization and Ecological Restoration of Shanghai, School of Ecology & Environmental Science, East China Normal University, Shanghai 200241, China
| | - Bing Xie
- Key Laboratory of Urbanization and Ecological Restoration of Shanghai, School of Ecology & Environmental Science, East China Normal University, Shanghai 200241, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| |
Collapse
|
14
|
Vasquez Y, Escobar MC, Saenz JS, Quiceno-Vallejo MF, Neculita CM, Arbeli Z, Roldan F. Effect of hydraulic retention time on microbial community in biochemical passive reactors during treatment of acid mine drainage. Bioresour Technol 2018; 247:624-632. [PMID: 28988048 DOI: 10.1016/j.biortech.2017.09.144] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 09/20/2017] [Accepted: 09/21/2017] [Indexed: 06/07/2023]
Abstract
The effect of hydraulic retention time (HRT) on the microbial community during acid mine drainage (AMD) treatment was investigated. Physicochemical and molecular (illumina and qPCR) analyses were performed on reactive mixtures collected from seven bioreactors in three-operation period (8, 17 and 36weeks). Long HRT (4day) favored the relative abundance of SRB, causing the increase of residual sulfides and short HRT (1day) affected the anaerobic conditions of the bioreactors and favored the presence the acidophilic chemolithotrophic microorganisms. Besides qPCR indicated that genes related to cellulose degradation were present in low copy numbers and were affected by the HRT. Finally, environmental factors (pH, organic source, metal sulfides, and sulfate concentrations) had significant impact on relative abundance of the phylogenetic lineages, rather than the types of lineages present in the reactive mixture. The findings of this study indicate that HRT affects the stability of passive bioreactors and their microbial communities.
Collapse
Affiliation(s)
- Yaneth Vasquez
- Departamento de Ciencias Naturales, Facultad de Ingeniería y Ciencias Básicas, Universidad Central, Calle 21 No. 4-40, Bogota, Colombia; Unidad de Saneamiento y Biotecnología Ambiental (USBA), Departamento de Biología, Pontificia Universidad Javeriana, Cra. 7 No. 40-62, Bogota, Colombia.
| | - Maria C Escobar
- Unidad de Saneamiento y Biotecnología Ambiental (USBA), Departamento de Biología, Pontificia Universidad Javeriana, Cra. 7 No. 40-62, Bogota, Colombia
| | - Johan S Saenz
- Unidad de Saneamiento y Biotecnología Ambiental (USBA), Departamento de Biología, Pontificia Universidad Javeriana, Cra. 7 No. 40-62, Bogota, Colombia
| | - Maria F Quiceno-Vallejo
- Departamento de Ciencias Naturales, Facultad de Ingeniería y Ciencias Básicas, Universidad Central, Calle 21 No. 4-40, Bogota, Colombia
| | - Carmen M Neculita
- Canada Research Chair in Treatment of Contaminated Mine Water, Research Institute on Mines and Environment (RIME), University of Quebec in Abitibi-Temiscamingue (UQAT), 445 Boulevard de l'Universite, Rouyn-Noranda, QC J9X 5E4, Canada
| | - Ziv Arbeli
- Unidad de Saneamiento y Biotecnología Ambiental (USBA), Departamento de Biología, Pontificia Universidad Javeriana, Cra. 7 No. 40-62, Bogota, Colombia
| | - Fabio Roldan
- Unidad de Saneamiento y Biotecnología Ambiental (USBA), Departamento de Biología, Pontificia Universidad Javeriana, Cra. 7 No. 40-62, Bogota, Colombia
| |
Collapse
|
15
|
Wei H, Wang J, Hassan M, Han L, Xie B. Anaerobic ammonium oxidation-denitrification synergistic interaction of mature landfill leachate in aged refuse bioreactor: Variations and effects of microbial community structures. Bioresour Technol 2017; 243:1149-1158. [PMID: 28764129 DOI: 10.1016/j.biortech.2017.07.077] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/13/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
In this work, anammox-denitrification process was verified by 15N stable isotopic tracing methods and variations and effects of microbial community structures were studied using Illumina MiSeq sequencing and Quantitative Polymerase Chain Reaction (qPCR). The results showed that higher nitrogen removal efficiency and richer microbial consortia was observed at hydraulic loading rate (HLR) of 15L/m3·d, BOD5/TN ratio of 0.4:1, respectively. Proteobacteria, Chloroflexi, Acidobacteria and Firmicutes were the dominant phyla in the anamox-denitrification biomass. The number of amx gene changed significantly during the HLR downshift and BOD5/TN ratio upshift period. The obtained results enhance understanding regarding the microbial community structures of anammox-denitrification bacteria in aged refuse, leading to a more effective controlling of anammox-denitrification process.
Collapse
Affiliation(s)
- Huawei Wei
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Science, East China Normal University, 500 Dong Chuan Road, Shanghai 200241, PR China
| | - Jie Wang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Science, East China Normal University, 500 Dong Chuan Road, Shanghai 200241, PR China
| | - Muhammad Hassan
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Science, East China Normal University, 500 Dong Chuan Road, Shanghai 200241, PR China
| | - Lu Han
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Science, East China Normal University, 500 Dong Chuan Road, Shanghai 200241, PR China
| | - Bing Xie
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Science, East China Normal University, 500 Dong Chuan Road, Shanghai 200241, PR China.
| |
Collapse
|
16
|
Liu N, Xie X, Yang B, Zhang Q, Yu C, Zheng X, Xu L, Li R, Liu J. Performance and microbial community structures of hydrolysis acidification process treating azo and anthraquinone dyes in different stages. Environ Sci Pollut Res Int 2017; 24:252-263. [PMID: 27714655 DOI: 10.1007/s11356-016-7705-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 09/13/2016] [Indexed: 06/06/2023]
Abstract
In this study, performance of hydrolysis acidification process treating simulated dyeing wastewater containing azo and anthraquinone dyes in different stages was investigated. The decolorization ratio, CODCr removal ratio, BOD5/CODCr value, and volatile fatty acids (VFAs) production were almost better in stage 1 than that in stage 2. Fourier transform infrared spectroscopy (FTIR) and gas chromatography-mass spectrometry (GC-MS) confirmed the biodegradation of Reactive Black 5 (RB5) and Remazol Brilliant Blue R (RBBR) in hydrolysis acidification process. Polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analyses revealed that significant difference of microbial community structures existed in stage 1 and 2. The dominant species in stage 1 was related to Bacteroidetes group, while the dominant species in stage 2 was related to Bacteroidetes and Firmicutes groups. From the results, it could be speculated that different dyes' structures might have significant influence on the existence and function of different bacterial species, which might supply information for bacteria screening and acclimation in the treatment of actual dyeing wastewater.
Collapse
Affiliation(s)
- Na Liu
- School of Environment and Surveying Engineering, Suzhou University, Suzhou, Anhui, 234000, China
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China
| | - Xuehui Xie
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
| | - Bo Yang
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China
| | - Qingyun Zhang
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China
| | - Chengzhi Yu
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China
| | - Xiulin Zheng
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China
| | - Leyi Xu
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China
| | - Ran Li
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China
| | - Jianshe Liu
- College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
| |
Collapse
|
17
|
Shu D, He Y, Yue H, Wang Q. Microbial structures and community functions of anaerobic sludge in six full-scale wastewater treatment plants as revealed by 454 high-throughput pyrosequencing. Bioresour Technol 2015; 186:163-172. [PMID: 25817026 DOI: 10.1016/j.biortech.2015.03.072] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/12/2015] [Accepted: 03/14/2015] [Indexed: 05/19/2023]
Abstract
The microbial communities and abundance in anaerobic sludge from 4 industrial and 2 municipal wastewater treatment plants were investigated using 454 pyrosequencing technology in this study. A total of 5482-8692 high-quality reads of 16S rRNA V3-V5 regions were obtained. Taxonomic analysis using QIIME and RDP classifier found that Proteobacteria, Bacteroidetes, Chloroflexi and Firmicutes were the most abundant phyla in these samples. Furthermore, real-time PCR was used to validate the absolute abundance of these 16S rRNAs and some functional genes, including total bacteria, anammox bacteria, NOB (Nitrobacter, Nitrospira), AOA amoA, AOB amoA, nosZ, nirS, nirK, narG, napA, nrfA, mcrA and dsrA. Multivariate linear regression analysis indicated that AOA might be mixotrophic. Finally, redundancy analysis was used to reveal the relationships between operation parameters and microbial communities. Results showed that the coexistence of anammox, denitrification and DNRA could be useful for the simultaneous removal of nitrogen and organic matter.
Collapse
Affiliation(s)
- Duntao Shu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, 710049 Shaanxi, China
| | - Yanling He
- School of Human Settlements & Civil Engineering, Xi'an Jiaotong University, 710049 Shaanxi, China.
| | - Hong Yue
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Qingyi Wang
- School of Chemical Engineering & Technology, Xi'an Jiaotong University, 710049 Shaanxi, China
| |
Collapse
|