scholarly journals GROWTH OF ESCHERICHIA COLI ON THE SURFACE OF AN ANION-EXCHANGE RESIN IN CONTINUOUS FLOW SYSTEM

1972 ◽  
Vol 18 (5) ◽  
pp. 319-330 ◽  
Author(s):  
REIKO HATTORI
Keyword(s):  
Escherichia Coli ◽  
Anion Exchange ◽  
Continuous Flow ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Flow System ◽  
Continuous Flow System

scholarly journals A Semi-Automated Bone Pretreatment System and the Pretreatment of Older and Contaminated Samples

Radiocarbon ◽  
1989 ◽  
Vol 31 (03) ◽  
pp. 247-253 ◽  
Author(s):  
I A Law ◽  
R E M Hedges
Keyword(s):  
Amino Acids ◽  
Cation Exchange ◽  
Continuous Flow ◽  
Exchange Resin ◽  
Flow System ◽  
Cation Exchange Resin ◽  
Flow Cells ◽  
Continuous Flow System ◽  
New Process ◽  
Degree Of Purification

A semi-automated continuous-flow system used to process archaeological bone to purified gelatin or amino acids for 14C dating is described. Powdered bone is retained in flow cells specifically designed to permit the sequential leaching of the bone with acid, alkali and water. Crude collagen obtained by this process is gelatinized, and than either purified directly using a macroporous cation exchange resin (BioRad AGMP-50), or hydrolyzed and the amino acids desalted on BioRad 50W-X8 resin. When compared with previous methods used by the laboratory, the new method allows more samples to be treated to a higher degree of purification. Examples of dates obtained on “standard” bones are presented, and confirm that no contamination is introduced from the components used in the new process.

Environmentally Benign Procedures for the Preparation and Isolation of 3-Methylcyclopent-2-en-1-one

1997 ◽  
Vol 50 (9) ◽  
pp. 921 ◽  
Author(s):  
Laurence Bagnell ◽  
Marianne Bliese ◽  
Teresa Cablewski ◽  
Christopher R. Strauss ◽  
John Tsanaktsidis
Keyword(s):  
Anion Exchange ◽  
Continuous Flow ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Batch Reactor ◽  
Environmentally Benign ◽  
Isolation Method ◽  
Preferential Adsorption ◽  
Microwave Reactor ◽  
Higher Temperature

A moderately yielding (50±4%) method for obtaining 3-methylcyclopent-2-en-1-one from hexane-2,5-dione in ≥99·5% purity was developed, using 2·1% (w/v) of aqueous KOH at reflux. However, the yield was increased to 80±5% by using considerably lower concentrations of base (<0·1%) and higher temperature (200°C) with a conventionally heated autoclave or a microwave batch reactor. The preparation was scaled up with a larger autoclave and also with a continuous flow microwave reactor. The dione impurity was removed from the enone by preferential adsorption on an anion-exchange resin in the bisulfite form. The product was recovered from the aqueous phase with a hydrophobic resin. This environmentally benign, non-extractive isolation method has potential for broad applicability in cleaner production.

Escherichia coli adherence to anion exchange resin

Urology ◽  
1986 ◽  
Vol 27 (4) ◽  
pp. 343-348 ◽  
Author(s):  
Michael R. Ruggieri ◽  
Phillip M. Hanno ◽  
Robert M. Levin
Keyword(s):  
Escherichia Coli ◽  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin

Robust Continuous-Flow Synthesis of Deuterium-Labeled β-Nitroalcohols Catalyzed by Basic Anion Exchange Resin

2020 ◽  
Vol 93 (8) ◽  
pp. 1000-1006
Author(s):  
Tsuyoshi Yamada ◽  
Kwihwan Park ◽  
Naoya Ito ◽  
Hayato Masuda ◽  
Wataru Teranishi ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Continuous Flow ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Flow Synthesis ◽  
Basic Anion Exchange Resin ◽  
Basic Anion

scholarly journals Removal of Escherichia coli from well water using continuous laminar flow in a channel system containing PPy/Cu modified electrodes

2018 ◽  
Vol 16 (6) ◽  
pp. 921-929 ◽  
Author(s):  
M. B. González ◽  
L. I. Brugnoni ◽  
D. O. Flamini ◽  
L. M. Quinzani ◽  
S. B. Saidman
Keyword(s):  
Escherichia Coli ◽  
Laminar Flow ◽  
Flow Rate ◽  
Continuous Flow ◽  
Flow System ◽  
Modified Electrodes ◽  
Laboratory Scale ◽  
Well Water ◽  
Continuous Flow System ◽  
Disinfection Process

Abstract Polypyrrole (PPy) films modified with copper species were used for disinfection of well water contaminated with Escherichia coli (E. coli). For that purpose a laboratory-scale continuous flow system with a parallel plate flow chamber configuration was implemented operating under laminar flow. Three flow rates were considered. The testing conditions did not affect the morphology of the modified PPy films, even after 5 h of continuous use at the largest flow rate examined. The results show that the bacteria killing process can be described by a first-order kinetic law at all Reynolds numbers. As the flow rate increases, the concentration of Cu species released from the electrodes enhances, accelerating the disinfection process. Re-inoculation and Cu-recharging tests showed bactericidal effects very similar to those displayed by the freshly prepared electrodes. It is concluded that PPy/Cu-modified electrodes installed in the laboratory-scale continuous flow system are effective for the water disinfection process.

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