scholarly journals Novel Biopolymer Composite Membrane Involved with Selective Mass Transfer and Excellent Water Permeability

10.5772/50697 ◽  
2012 ◽  
Author(s):  
Peng Wu ◽  
Masanao Imai
Keyword(s):  
Mass Transfer ◽  
Composite Membrane ◽  
Water Permeability

scholarly journals Implementation of Spiegler–Kedem and Steric Hindrance Pore Models for Analyzing Nanofiltration Membrane Performance for Smart Water Production

Membranes ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 78 ◽  
Author(s):  
Remya Nair ◽  
Evgenia Protasova ◽  
Skule Strand ◽  
Torleiv Bilstad
Keyword(s):  
Mass Transfer ◽  
Reflection Coefficient ◽  
Oil Recovery ◽  
Water Permeability ◽  
Structural Parameters ◽  
Pure Water ◽  
Model Parameters ◽  
Water Production ◽  
Solute Permeability ◽  
Smart Water

A predictive model correlating the parameters in the mass transfer-based model Spiegler–Kedem to the pure water permeability is presented in this research, which helps to select porous polyamide membranes for enhanced oil recovery (EOR) applications. Using the experimentally obtained values of flux and rejection, the reflection coefficient σ and solute permeability Ps have been estimated as the mass transfer-based model parameters for individual ions in seawater. The reflection coefficient and solute permeability determined were correlated with the pure water permeability of a membrane, which is related to the structural parameters of a membrane. The novelty of this research is the development of a model that consolidates the various complex mechanisms in the mass transfer of ions through the membrane to an empirical correlation for a given feed concentration and membrane type. These correlations were later used to predict ion rejections of any polyamide membrane with a known pure water permeability and flux with seawater as a feed that aids in the selection of suitable nanofiltration (NF) for smart water production.

Enhancing water permeability and antifouling performance of thin–film composite membrane by tailoring the support layer

Desalination ◽  
2021 ◽  
Vol 516 ◽  
pp. 115193
Author(s):  
Ling Wang ◽  
Mohammad Kahrizi ◽  
Peng Lu ◽  
Yayu Wei ◽  
Hong Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Composite Membrane ◽  
Water Permeability ◽  
Film Composite ◽  
Thin Film Composite Membrane ◽  
Thin Film Composite

An Analysis of Unicellular Mass Transfer Using a Microfabricated Experimental Technique

2000 ◽  
Author(s):  
Kelvan Howard ◽  
Boris Rubinsky
Keyword(s):  
Mass Transfer ◽  
Standard Deviation ◽  
Reflection Coefficient ◽  
Membrane Permeability ◽  
Experimental Technique ◽  
Water Permeability ◽  
Permeability Coefficient ◽  
Volume Changes ◽  
Flow Paths

Abstract This study introduces a microfabricated chamber which allows individual cells to be maintained between two different flow paths while kinetic volume changes and membrane permeability are measured. For HBL-100 cells, the data yielded a water permeability (Lp) of 1.1 ±0.5 μm/(min-atm) (mean ± 1 standard deviation) (N = 5) during the uncoupled transport of water at 22°C. In the presence of 6M glycerol, the water permeability (Lp), permeability coefficient (Ps), and the reflection coefficient (σs) were determined to be 2.0± 0.63 μm/(min-atm), 2.7×10E-5 ±6.1×10E-6 cm-sec−1, and 0.76±.05 (N = 6). No previous values of these coefficients could be found for HBL-100 cells.

Tailoring the structure of polyamide thin film composite membrane with zwitterions to achieve high water permeability and antifouling property

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 98730-98739 ◽  
Author(s):  
Xiaodan Weng ◽  
Yanli Ji ◽  
Fengyang Zhao ◽  
Quanfu An ◽  
Congjie Gao
Keyword(s):  
Thin Film ◽  
Protein Adsorption ◽  
Composite Membrane ◽  
Water Permeability ◽  
Interfacial Polymerization ◽  
Water Flux ◽  
High Water ◽  
Film Composite ◽  
Thin Film Composite Membrane ◽  
Thin Film Composite

Zwitterionic membranes prepared via interfacial polymerization directly exhibit remarkably high water flux (80.3 L m−2 h−1) and protein adsorption resistance.

scholarly journals A novel surface cross-linked GO-based membrane with superior separation performance

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 54213-54221 ◽  
Author(s):  
Zhen Qin ◽  
Lifang Wang ◽  
Wenzheng Zhang ◽  
Kai Pan
Keyword(s):  
Graphene Oxide ◽  
Composite Membrane ◽  
Water Permeability ◽  
High Performance ◽  
High Water ◽  
Separation Performance

In this study, a novel procedure of fabricating a high performance graphene oxide (GO) composite membrane with high water permeability and selectivity was developed.

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