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Wyszukujesz frazę "Nernst-Planck equation" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Removal of Cr(III) ions from salt solution by nanofiltration: experimental and modelling analysis
Autorzy:
Kowalik-Klimczak, A.
Zalewski, M.
Gierycz, P.
Powiązania:
https://bibliotekanauki.pl/articles/779045.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
nanofiltration
chromium(III)
DSP model
extended Nernst-Planck equation
Opis:
The aim of this study was experimental and modelling analysis of the nanofiltration process used for the removal of chromium(III) ions from salt solution characterized by low pH. The experimental results were interpreted with Donnan and Steric Partitioning Pore (DSP) model based on the extended Nernst-Planck equation. In this model, one of the main parameters, describing retention of ions by the membrane, is pore dielectric constant. In this work, it was identified for various process pressures and feed compositions. The obtained results showed the satisfactory agreement between the experimental and modelling data. It means that the DSP model may be helpful for the monitoring of nanofiltration process applied for treatment of chromium tannery wastewater.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 3; 10-16
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental and modelling analysis of the separation of ionic salts solution in nanofiltration process
Autorzy:
Kowalik-Klimczak, A.
Zalewski, M.
Gierycz, P.
Powiązania:
https://bibliotekanauki.pl/articles/115475.pdf
Data publikacji:
2015
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
nanofiltration
Nernst-Planck equation
modelling
salt solution
nanofiltracja
równanie Nernsta-Plancka
modelowanie
roztwór soli
Opis:
This paper presents the possibility of the use of Donnan and Steric Partitioning Pore Model (DSPM) based on the extended Nernst-Planck equation for interpretation of the separation of chromium(III) and chloride ions from concentrated salt solution in nanofiltration process. Results of predictions obtained with the analyzed model showed the significant effect of the pore dielectric constant on separation of chromium(III) and chloride ions from concentrated salt solution on nanofiltration membranes. It was found that the increase of pore dielectric constant caused the decrease of chromium(III) and chloride ions separation. Additionally, the satisfactory agreement between experimental and predicted data was stated. The Donnan and Steric Partitioning Pore Model may be helpful for the monitoring of nanofiltration process applied for different industrial wastewater treatment.
Źródło:
Challenges of Modern Technology; 2015, 6, 2; 24-29
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanopory : budowa, właściwości, modele, zastosowania
Nanopores : structure, properties, models, app lications
Autorzy:
Stachiewicz, A.
Molski, A.
Powiązania:
https://bibliotekanauki.pl/articles/171558.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
nanopory
prąd jonowy
translokacja biopolimerów
równanie Poissona-Boltzmanna
równanie Poissona-Nernsta-Plancka
dynamika molekularna
nanopores
ion current
biopolymer translocation
Poisson-Boltzmann
equation
Poisson-Nernst-Planck equation
molecular dynamics
Opis:
Nanopores are small (1–100 nm diameter) holes/channels formed in biological membranes (Fig. 1) or fabricated in synthetic materials (Fig. 2). Permeation of ions and small molecules through nanopores is common in biological systems. The first experiments where nanopores were used as single-molecule sensors were performed in the 90s [1, 2]. The detection principle is based on a monitoring of an ionic current passing through a nanopore as an electric field is applied across the membrane. Electrically charged particles (e.g. DNA ) move in the electric field and block the ionic current as they pass through the nanopore. A sudden drop of the ionic current signals a single-molecule translocation event (Fig. 3–5). Nanopore sensors can give an information about the analyte: its size, structure and bonds stability. Today, a major topic of interest is the possibility of nanopore DNA sequencing. In this work we present an introduction to nanopore technology and to current research related to potential nanopore applications. First, we describe biological and synthetic nanopores: their structure and methods of fabrication. Next, different modes of nanopore experiments are presented. In the third section, we focus on theoretical models and simulations of nanopores. Finally, we present future perspectives for applications with particular reference to DNA sequencing.
Źródło:
Wiadomości Chemiczne; 2013, 67, 3-4; 277-302
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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