scholarly journals Characteristics of Biofilm Formation Process in the Bioelectrochemical Systems, Working in Batch Mode of Cultivation

2017 ◽  
Vol 11 (1) ◽  
pp. 105-110 ◽  
Author(s):  
Liudmyla Zubchenko ◽  
◽  
Yevhen Kuzminskiy ◽  
Keyword(s):  
Formation Process ◽  
Biofilm Formation ◽  
Bioelectrochemical Systems ◽  
Batch Mode

Process Description of an Unconventional Biofilm Formation by Bacterial Cells Autoagglutinating Through Sticky, Long, and Peritrichate Nanofibers

2019 ◽  
Author(s):  
Yoshihide Furuichi ◽  
Shogo Yoshimoto ◽  
Tomohiro Inaba ◽  
Nobuhiko Nomura ◽  
Katsutoshi Hori
Keyword(s):  
Formation Process ◽  
Biofilm Formation ◽  
Extracellular Polymeric Substances ◽  
Waste Treatment ◽  
Large Cell ◽  
Dlvo Theory ◽  
Bacterial Cells ◽  
Chemical Production ◽  
Discontinuous Surface ◽  
Cell Cell

<p></p><p>Biofilms are used in environmental biotechnologies including waste treatment and environmentally friendly chemical production. Understanding the mechanisms of biofilm formation is essential to control microbial behavior and improve environmental biotechnologies. <i>Acinetobacter </i>sp. Tol 5 autoagglutinate through the interaction of the long, peritrichate nanofiber protein AtaA, a trimeric autotransporter adhesin. Using AtaA, without cell growth or the production of extracellular polymeric substances, Tol 5 cells quickly form an unconventional biofilm. In this study, we investigated the formation process of this unconventional biofilm, which started with cell–cell interactions, proceeded to cell clumping, and led to the formation of large cell aggregates. The cell–cell interaction was described by DLVO theory based on a new concept, which considers two independent interactions between two cell bodies and between two AtaA fiber tips forming a virtual discontinuous surface. If cell bodies cannot collide owing to an energy barrier at low ionic strengths but approach within the interactive distance of AtaA fibers, cells can agglutinate through their contact. Cell clumping proceeds following the cluster–cluster aggregation model, and an unconventional biofilm containing void spaces and a fractal nature develops. Understanding its formation process would extend the utilization of various types of biofilms, enhancing environmental biotechnologies.</p><p></p>

scholarly journals Effects of Operational Parameters on Biofilm Formation of Mixed Bacteria for Hydrogen Fermentation

2020 ◽  
Vol 12 (21) ◽  
pp. 8863
Author(s):  
Jie Mei ◽  
Huize Chen ◽  
Qiang Liao ◽  
Abdul-Sattar Nizami ◽  
Ao Xia ◽  
...  
Keyword(s):  
Formation Process ◽  
Biofilm Formation ◽  
Laser Scanning ◽  
Extracellular Polymeric Substances ◽  
Packed Bed ◽  
Dark Fermentation ◽  
Laser Scanning Microscopy ◽  
Packed Bed Reactor ◽  
Confocal Laser ◽  
Operational Parameters

Dark fermentation of organic wastes, such as food waste and algae, via mixed hydrogen-producing bacteria (HPB) is considered a sustainable approach for hydrogen production. The biofilm system protects microorganisms from the harmful environment and avoids the excessive loss of bacteria caused by washout, which ensures that the dark fermentation process remains stable. In this study, a downflow anaerobic packed-bed reactor was commissioned to investigate the biofilm formation process of mixed HPB under various operational parameters. Scanning electron microscopy indicated changes in surface morphology during the biofilm formation period. Proteins and polysaccharides in extracellular polymeric substances were identified by confocal laser scanning microscopy to reveal their distribution characteristics. A hydraulic retention time of 0.5 d, a substrate concentration of 15 g/L and an HPB inoculum ratio of 35% were identified as the optimal operational parameters for biofilm formation. The diversity of bacteria between suspension and biofilm showed significantly different distributions; Clostridiales and Lactobacillales were identified as the dominant orders in the biofilm formation process. The abundances of Clostridiales and Lactobacillales were 15.1% and 56.2% in the biofilm, respectively.

Subminimal inhibitory concentration (sub-MIC) of antibiotic induces electroactive biofilm formation in bioelectrochemical systems

2017 ◽  
Vol 125 ◽  
pp. 280-287 ◽  
Author(s):  
Lean Zhou ◽  
Tian Li ◽  
Jingkun An ◽  
Chengmei Liao ◽  
Nan Li ◽  
...  
Keyword(s):  
Biofilm Formation ◽  
Inhibitory Concentration ◽  
Bioelectrochemical Systems

Analysis on the Start-up of Campus Sewage Treatment with 3-Stage Biological Aerated Filter

2013 ◽  
Vol 295-298 ◽  
pp. 1376-1379
Author(s):  
Lei Zhu ◽  
Fang Xing Liu ◽  
Xiao Lin Jiang ◽  
Hong Jiao Song
Keyword(s):  
Removal Efficiency ◽  
Formation Process ◽  
Biofilm Formation ◽  
Sewage Treatment ◽  
Biological Aerated Filter ◽  
Filter System ◽  
N Concentration ◽  
Start Up ◽  
Formation Method ◽  
Aerated Filter

In this study, the alternating 3-stage biological aerated filter system with the brush as the filler was proposed for campus sewage treatment and the biofilm formation process was researched. Adopting the four-stage inoculated biofilm formation method, the treatment effects of the 3 filter columns respectively lasted 23d, 20d, 23d to reach stable. After the attached biofilm grew steadily, the effluent COD concentration was between 45 mg/L and 95 mg/L, and the removal efficiency was 77%~85%. The effluent NH4+-N concentration of 1st and 3rd filter columns was 11~25 mg/L, and the removal efficiency was 47%~67%; while the effluent NH4+-N concentration of 2nd filter column was 8 ~19 mg/L, the removal efficiency was 64%~ 78%.

In situ monitoring of wastewater biofilm formation process via ultrasonic time domain reflectometry (UTDR)

2018 ◽  
Vol 334 ◽  
pp. 2134-2141 ◽  
Author(s):  
Jinfeng Wang ◽  
Hongqiang Ren ◽  
Xianhui Li ◽  
Jianxin Li ◽  
Lili Ding ◽  
...  
Keyword(s):  
Time Domain ◽  
Formation Process ◽  
Biofilm Formation ◽  
Time Domain Reflectometry ◽  
In Situ Monitoring ◽  
Ultrasonic Time

Electroactive mixed culture derived biofilms in microbial bioelectrochemical systems: The role of pH on biofilm formation, performance and composition

2011 ◽  
Vol 102 (20) ◽  
pp. 9683-9690 ◽  
Author(s):  
Sunil A. Patil ◽  
Falk Harnisch ◽  
Christin Koch ◽  
Thomas Hübschmann ◽  
Ingo Fetzer ◽  
...  
Keyword(s):  
Mixed Culture ◽  
Biofilm Formation ◽  
Bioelectrochemical Systems

Influence of Small RNAs on Biofilm Formation Process in Bacteria

2013 ◽  
Vol 55 (3) ◽  
pp. 288-297 ◽  
Author(s):  
Mohammad Ali Ghaz-Jahanian ◽  
Fatemeh Khodaparastan ◽  
Aydin Berenjian ◽  
Hoda Jafarizadeh-Malmiri
Keyword(s):  
Formation Process ◽  
Biofilm Formation ◽  
Small Rnas

Shotgun proteomics study of early biofilm formation process of Acidithiobacillus ferrooxidans ATCC 23270 on pyrite

PROTEOMICS ◽  
2013 ◽  
Vol 13 (7) ◽  
pp. 1133-1144 ◽  
Author(s):  
Mario Vera ◽  
Beate Krok ◽  
Sören Bellenberg ◽  
Wolfgang Sand ◽  
Ansgar Poetsch
Keyword(s):  
Formation Process ◽  
Acidithiobacillus Ferrooxidans ◽  
Biofilm Formation ◽  
Shotgun Proteomics ◽  
Proteomics Study

Flame Oxidation of Stainless Steel Felt Enhances Anodic Biofilm Formation and Current Output in Bioelectrochemical Systems

2014 ◽  
Vol 48 (12) ◽  
pp. 7151-7156 ◽  
Author(s):  
Kun Guo ◽  
Bogdan C. Donose ◽  
Alexander H. Soeriyadi ◽  
Antonin Prévoteau ◽  
Sunil A. Patil ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Biofilm Formation ◽  
Bioelectrochemical Systems ◽  
Current Output ◽  
Flame Oxidation ◽  
Anodic Biofilm
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