Bond-graph description and simulation of agitated bulk liquid membrane system—Dependence of fluxes on liquid membrane volume

2013 ◽  
Vol 435 ◽  
pp. 1-10 ◽  
Author(s):  
Piotr Szczepański ◽  
Romuald Wódzki
2014 ◽  
Vol 132 ◽  
pp. 616-626 ◽  
Author(s):  
Piotr Szczepański ◽  
Szidonia K. Tanczos ◽  
Lucian D. Ghindeanu ◽  
Romuald Wódzki

Desalination ◽  
2011 ◽  
Vol 272 (1-3) ◽  
pp. 170-173 ◽  
Author(s):  
Ranpreet Singh ◽  
Rajeev Mehta ◽  
Vineet Kumar

2015 ◽  
Vol 69 (9) ◽  
Author(s):  
Maria Szpakowska ◽  
Elżbieta Płocharska-Jankowska ◽  
Ottó B. Nagy

AbstractA new type of bulk liquid membrane system, which represents the first example of a bulk liquid membrane oscillator characterised by the presence of two coupled oscillators, is described. When the benzyldimethyltetradecylammonium chloride surfactant undergoes an oscillatory mass transfer through a nitromethane liquid membrane, a new liquid layer (phase X) appears between the membrane and the acceptor phase. Kinetic analysis provides evidence that the whole system is composed of two coupled oscillators with diffusion-mediated physical coupling. The first component oscillator (based on nitromethane) of lower frequency delivers the driving material to the second one (phase X-based oscillator) leading to additional higher frequency oscillations. A new molecular mechanism is proposed for interpreting the experimental observations. The results might enhance understanding of intercellular communication in biology, where periodic signalling is more efficient than any other type of signalling mode.


2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Pankaj Raizada ◽  
Uma Sharma

The present work explores membrane-mediated extraction and transport studies of amino acids through artificial bulk liquid membrane system with kryptofix 5 as a carrier. The various reaction parameters such as amino acid concentration, carrier concentration, time, pH, and stirring effect were studied to optimize reaction conditions. The stirring of source and receiving phases increased the efficiency of extraction process. Noncyclic receptor kryptofix 5 with five oxyethylene units and terminal aromatic donor end groups governs its transport and extraction efficiency. The extraction and transport efficiency followed the following trend: valine > alanine > glycine > threonine. Supported liquid membrane (SLM) studies were performed using cellulose nitrate, PTFE, eggshell, and onion membranes. The egg shell membrane support proved to be most efficient due to intricate network of water insoluble proteins fibers with very high surface area and homogeneity.


1997 ◽  
Vol 55 (1) ◽  
pp. 115-121 ◽  
Author(s):  
Jong Seung Kim ◽  
Moon Hwan Cho ◽  
Sang Chul Lee ◽  
Yong-Ill Lee ◽  
Wonbo Sim ◽  
...  

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