DOI: 10.1016/j.watres.2018.06.007
Scopus记录号: 2-s2.0-85049342763
论文题名: Aggregation ability of three phylogenetically distant anammox bacterial species
作者: Ali M. ; Shaw D.R. ; Zhang L. ; Haroon M.F. ; Narita Y. ; Emwas A.-H. ; Saikaly P.E. ; Okabe S.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 10
结束页码: 18
语种: 英语
英文关键词: Aggregation ability
; Anammox bacteria
; Cell surface physicochemical properties
; Extracellular polymeric substances
Scopus关键词: Aggregates
; Bioreactors
; Cell membranes
; Contact angle
; Cytology
; Hydrophobicity
; Nitrogen removal
; Nuclear magnetic resonance spectroscopy
; Polymers
; Surface chemistry
; Thermodynamics
; Wastewater treatment
; X ray photoelectron spectroscopy
; Anammox bacteria
; Extended DLVO theory
; Extra-cellular polymeric substances
; Extracellular polymeric substance (EPSs)
; Hydrophobic surfaces
; Microbial aggregates
; Physicochemical property
; Surface thermodynamics
; Bacteria
; polymer
; aggregation
; bacterium
; bioreactor
; cell
; hydrophobicity
; membrane
; microbial activity
; phylogenetics
; physicochemical property
; plankton
; polymer
; quantitative analysis
; water treatment
; anammox bacterium
; Article
; bacterial cell
; bacterial phenomena and functions
; biomass
; Brocadia sapporoensis
; Candidatus brocadia sinica
; contact angle
; enrichment culture
; nonhuman
; nuclear magnetic resonance
; phylogeny
; physical chemistry
; plankton
; priority journal
; surface property
; thermodynamics
; ultraviolet photoelectron spectroscopy
; zeta potential
; Bacteria (microorganisms)
; Candidatus Jettenia
英文摘要: Anaerobic ammonium-oxidizing (anammox) bacteria are well known for their aggregation ability. However, very little is known about cell surface physicochemical properties of anammox bacteria and thus their aggregation abilities have not been quantitatively evaluated yet. Here, we investigated the aggregation abilities of three different anammox bacterial species: “Candidatus Brocadia sinica”, “Ca. Jettenia caeni” and “Ca. Brocadia sapporoensis”. Planktonic free-living enrichment cultures of these three anammox species were harvested from the membrane bioreactors (MBRs). The physicochemical properties (e.g., contact angle, zeta potential, and surface thermodynamics) were analyzed for these anammox bacterial species and used in the extended DLVO theory to understand the force-distance relationship. In addition, their extracellular polymeric substances (EPSs) were characterized by X-ray photoelectron spectroscopy and nuclear magnetic resonance. The results revealed that the “Ca. B. sinica” cells have the most hydrophobic surface and less hydrophilic functional groups in EPS than other anammox strains, suggesting better aggregation capability. Furthermore, aggregate formation and anammox bacterial populations were monitored when planktonic free-living cells were cultured in up-flow column reactors under the same conditions. Rapid development of microbial aggregates was observed with the anammox bacterial population shifts to a dominance of “Ca. B. sinica” in all three reactors. The dominance of “Ca. B. sinica” could be explained by its better aggregation ability and the superior growth kinetic properties (higher growth rate and affinity to nitrite). The superior aggregation ability of “Ca. B. sinica” indicates significant advantages (efficient and rapid start-up of anammox reactors due to better biomass retention as granules and consequently stable performance) in wastewater treatment application. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112578
Appears in Collections: 气候减缓与适应
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作者单位: King Abdullah University of Science and Technology, Biological and Environmental Sciences and Engineering Division, Water Desalination and Reuse Center, Thuwal, 23955-6900, Saudi Arabia; Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West-8, Sapporo, Hokkaido 060-8628, Japan; Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, United States; King Abdullah University of Science and Technology, Core Labs, Thuwal, 23955-6900, Saudi Arabia
Recommended Citation:
Ali M.,Shaw D.R.,Zhang L.,et al. Aggregation ability of three phylogenetically distant anammox bacterial species[J]. Water Research,2018-01-01,143