New Filamentous Bacteria for Coal Desulfurization

2018 ◽  
pp. 725-732
Author(s):  
Kwangil Lee
Keyword(s):  
Filamentous Bacteria ◽  
Coal Desulfurization

Intestinal, Segmented, Filamentous Bacteria and Colonisation Resistance of Mice to Pathogenic Bacteria

1992 ◽  
Vol 5 (6) ◽  
Author(s):  
H. L. B. M. Klaasen ◽  
J. P. Koopman ◽  
F. G. J. Poelma ◽  
M. E. Van Den Brink ◽  
M. H. Bakker ◽  
...  
Keyword(s):  
Pathogenic Bacteria ◽  
Filamentous Bacteria ◽  
Segmented Filamentous Bacteria ◽  
Colonisation Resistance

Progress on FISH Probes of Sludge Bulking Caused by Filamentous Bacteria

2012 ◽  
Vol 18 (4) ◽  
pp. 705
Author(s):  
Ping WANG ◽  
Zhisheng YU ◽  
Rong QI ◽  
Hongxun ZHANG
Keyword(s):  
Filamentous Bacteria ◽  
Sludge Bulking

Role of Glycogen as an Intracellular Carbon Reserve of Activated Sludge in the Competitive Growth of Filamentous and Non-Filamentous Bacteria

1991 ◽  
Vol 23 (4-6) ◽  
pp. 899-905 ◽  
Author(s):  
Y. Matsuzawa ◽  
T. Mino
Keyword(s):  
Activated Sludge ◽  
Feeding Pattern ◽  
Filamentous Bacteria ◽  
Competitive Growth ◽  
Maximum Capacity ◽  
Intermittent Feeding ◽  
Feeding Type ◽  
Continuous Feeding ◽  
The Relationship

Activated sludge mixed cultures were cultivated with a glucose containing substrate in order to investigate the relationship between the feeding pattern (continuous or intermittent feeding) and the glycogen reservation capacity of activated sludge. An experimental method to measure the maximum capacity of glycogen reservation in the sludge was developed. Sludge with higher glycogen reservation capacity has an ability to synthesize glycogen faster, which ensures the higher glucose uptake. Therefore, sludge which has high glycogen reservation capacity becomes predominant in intermittently fed reactors. When the feeding pattern was changed from continuous feeding to intermittent feeding, a filamentous bacterium, Type 1701, started to decrease and a gram positive tetrad coccus became predominant. When the feeding pattern was returned to continuous feeding, Type 1701 re-appeared. Type 1701 has lower glycogen reservation capacity than the tetrad coccus. Therefore, the former cannot dominate over the latter in intermittently fed reactors.

Phylogenetic assessment of five filamentous bacteria isolated from bulking activated sludges

1998 ◽  
Vol 37 (4-5) ◽  
pp. 303-306 ◽  
Author(s):  
R. Howarth ◽  
I. M. Head ◽  
R. F. Unz
Keyword(s):  
Ribosomal Rna ◽  
Oligonucleotide Probe ◽  
Strong Relationship ◽  
Bootstrap Support ◽  
Its Sequence ◽  
Target Sequence ◽  
Common Ancestry ◽  
Filamentous Bacteria ◽  
Axenic Strains ◽  
Rrna Sequences

Nearly complete 16S ribosomal RNA (rRNA) sequences were determined for fully characterised axenic strains of Thiothrix, Eikelboom type O21N, and Eikelboom type 1701 originally isolated from bulking activated sludges. Thiothrix strains formed a monophyletic group (100% bootstrap support) with previously described Thiothrix nivea strain JP2 and Thiothrix ramosa. Eikelboom type O21N strain AP3 revealed a sufficiently strong relationship to the Thiothrix group to suggest a common ancestry for the two organism although it was not possible to designate type 021N as a species of Thiothrix. Eikelboom type 1701 contained within its sequence the target sequence of an oligonucleotide probe for the detection of Sphaerotilus natans.

Filamentous Bacteria Conduct Electricity over Centimeter Distances

2012 ◽  
Vol 7 (10) ◽  
pp. 446-447
Author(s):  
Jeffrey L. Fox
Keyword(s):  
Filamentous Bacteria

scholarly journals Deep learning-based morphology classification of activated sludge flocs in wastewater treatment plants

2021 ◽  
Author(s):  
Hisashi Satoh ◽  
Yukari Kashimoto ◽  
Naoki Takahashi ◽  
Takashi Tsujimura
Keyword(s):  
Wastewater Treatment ◽  
Deep Learning ◽  
Activated Sludge ◽  
Morphological Change ◽  
Wastewater Treatment Plants ◽  
Filamentous Bacteria ◽  
Sludge Flocs

A deep learning-based two-label classifier 1 recognized a 20% morphological change in the activated flocs. Classifier-2 quantitatively recognized an abundance of filamentous bacteria in activated flocs.

Validation of a new image analysis procedure for quantifying filamentous bacteria in activated sludge

2014 ◽  
Vol 70 (6) ◽  
pp. 955-963 ◽  
Author(s):  
Ewa Liwarska-Bizukojc ◽  
Marcin Bizukojc ◽  
Olga Andrzejczak
Keyword(s):  
Image Processing ◽  
Image Analysis ◽  
Activated Sludge ◽  
Analysis Procedure ◽  
Automated Image Analysis ◽  
Filamentous Bacteria ◽  
Image Processing And Analysis ◽  
Manual Counting ◽  
Analysis Application ◽  
Activated Sludge Systems

Quantification of filamentous bacteria in activated sludge systems can be made by manual counting under a microscope or by the application of various automated image analysis procedures. The latter has been significantly developed in the last two decades. In this work a new method based upon automated image analysis techniques was elaborated and presented. It consisted of three stages: (a) Neisser staining, (b) grabbing of microscopic images, and (c) digital image processing and analysis. This automated image analysis procedure possessed the features of novelty. It simultaneously delivered data about aggregates and filaments in an individual calculation routine, which is seldom met in the procedures described in the literature so far. What is more important, the macroprogram performing image processing and calculation of morphological parameters was written in the same software which was used for grabbing of images. Previously published procedures required using two different types of software, one for image grabbing and another one for image processing and analysis. Application of this new procedure for the quantification of filamentous bacteria in the full-scale as well as laboratory activated sludge systems proved that it was simple, fast and delivered reliable results.

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