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Wednesday, July 29, 2020 | History

2 edition of Water transport in hyperfiltration membranes found in the catalog.

Water transport in hyperfiltration membranes

D. Vofsi

Water transport in hyperfiltration membranes

by D. Vofsi

  • 236 Want to read
  • 35 Currently reading

Published by U.S. Dept. of the Interior; for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington .
Written in English

    Subjects:
  • Saline water conversion -- Electrodialysis process.,
  • Membranes (Technology)

  • Edition Notes

    Prepared for Office of Saline Water under contract no. 14-01-0001-961.

    Statementby D. Vofski and O. Kedem.
    SeriesOffice of Saline Water. Research and development progress report no. 653, Research and development progress report ;, no. 653.
    ContributionsKedem, O., joint author., United States. Office of Saline Water.
    Classifications
    LC ClassificationsTD478 .U5 no. 653
    The Physical Object
    Paginationiii, 117 p.
    Number of Pages117
    ID Numbers
    Open LibraryOL5276230M
    LC Control Number71612345

      This transport relies on surface tension, the fact that water molecules like to interact with the walls of the tissues, and that water molecules exert a “tug” on each other. The book starts with a series of general chapters on membrane preparation, transport theory, and concentration polarization. Thereafter, each majo r membrane application is treated in a single to page chapter. In a book of this size it is impossible to describe every membrane process in detail, but the major processes are covered.

      The analysis is developed for ultrafiltration of a large macrosolute, e.g., a protein, in which the goal is to remove water and buffer components. Since mass transport in ultrafiltration is dominated by pressure-driven convection, the flux of all solutes through the membrane is directly proportional to the ultrafiltration rate. Carrier Proteins for Active Transport. An important membrane adaption for active transport is the presence of specific carrier proteins or pumps to facilitate movement. There are three types of these proteins or transporters: uniporters, symporters, and antiporters. A uniporter carries one .

    Purchase Molecular Mechanisms of Water Transport Across Biological Membranes, Volume - 1st Edition. Print Book & E-Book. ISBN , The main purpose of this book is to provide in-depth presentation of physical techniques for measuring water transport and their applications to a variety of biological membranes, from model membrane systems to cell membranes, and then from isolated cells to multicellular barrier systems, such as epithelia or even whole organisms.


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Water transport in hyperfiltration membranes by D. Vofsi Download PDF EPUB FB2

Additional Physical Format: Online version: Vofsi, D., Water transport in hyperfiltration membranes. Washington, D.C.: U.S.

Dept. of the Interior, Additional Physical Format: Online version: Vofsi, D., Water transport in hyperfiltration membranes. Washington, U.S. Dept. of the Interior; for sale by the Supt.

Description Synthetic Membrane Processes: Fundamentals and Water Applications presents a summary of some of the theoretical developments in membrane and fluid transport. The book reviews water and wastewater hyperfiltration, ultrafiltration, and Water transport in hyperfiltration membranes book, as well as the economics of these processes.

Description Synthetic Membrane Processes: Fundamentals and Water Applications presents a summary of some of the theoretical developments in membrane and fluid transport.

The book reviews water and wastewater hyperfiltration, ultrafiltration, and electrodialysis, as well as the economics of these Edition: 1. The solution diffusion theory is applicable to reverse osmosis or hyperfiltration membranes, but cannot describe the mechanism of water transport fully and the terms, related to pressure, ion exchange and cluster effect are to be added to explain the water transport fully, as described in this by: Membrane Technology and Applications is the most authoritative overview available today of separation membranes, their theoretical underpinnings, manufacture and use.

This second edition has been fully revised and expanded to provide comprehensive, up-to-the-minute coverage of the latest developments in the field. The first four chapters cover the basics of membrane science, including 5/5(5).

A molecular friction model for transport of uncharged solutes in neutral hyperfiltration and ultrafiltration membranes containing bound water. Desalination18 (3), I. Fundamentals.- Water and Salt Transport in Hyperfiltration.- Concentration Polarization in Hyperfiltration Systems.- II.

Cellulosic Membranes The book thus represents a broad cross section of membrane research and development activities in the United States and abroad within the field of reverse osmosis.

The purposes of the book are to bring attention to important new developments in this field, to suggest what the next generation of reverse osmosis equipment may look like, and to. Transmission of water and ions through crosslinked hydrophilic membranes. Journal of Colloid Science20 (9), DOI: /(65) Water potential is a measure of the potential energy in water, specifically, water movement between two systems.

Water potential can be defined as the difference in potential energy between any given water sample and pure water (at atmospheric pressure and ambient temperature).

Water potential is denoted by the Greek letter Ψ (psi) and is expressed in units of pressure (pressure is a form of.

Water and Salt Transport in Hyperfiltration. Pages Book Title Reverse Osmosis Membrane Research Book Subtitle Based on the symposium on “Polymers for Desalination” held at the nd National Meeting of the American Chemical Society in Washington, D.C., September   Water Transport and Biological Membranes book.

DOI link for Water Transport and Biological Membranes. Water Transport and Biological Membranes book. Volume 2. By Gheorghe Benga. Edition 1st Edition. First Published eBook Published 4 May Pub.

location Boca Raton. Imprint CRC Press. Effect of pressure drop on gas ratios at degrees through a 15nm membrane Figures 11 and 12 show that the membrane with larger pore size of nm membrane does not approach ideality (i.e.

the. L. Boateng, Multiscale modeling of water transport and the influence of water quality parameters on membrane processes, PhD Thesis, University of South Carolina, [40] A. Corral, Alternative technologies for inland desalination, PhD Thesis, The University of Arizona,   Synthetic membranes with pores at the subnanometre scale are at the core of processes for separating solutes from water, such as water purification and desalination.

While these membrane. Clay membrane properties have the potential to significantly modulate the groundwater hydrology of clay-rich media, at least in some cases. They have been studied as a potential cause of erratic fluid pressures in sedimentary formations and, also, because of their potential impacts on well-bore stability, chemico-osmotic consolidation, water and nutrient fluxes in soils, and waste isolation.

Fundamentals.- Water and Salt Transport in Hyperfiltration.- Concentration Polarization in Hyperfiltration Systems.- II. Cellulosic Membranes.- The Use of Solubility Parameters for Solvent Selection In Asymmetric Membrane Formation.- The Mechanism of Membrane Formation: Membrane Structures and Their Relation to Preparation Conditions.- Influence of Processing Variables on the Transport.

across the membrane. Water molecules sorb into the upstream face of the membrane, diffuse down the chemical potential gradient across the membrane, and desorb from the downstream face of the membrane.

The second step, diffusion through the membrane, is the rate-determining step in water transport across the membrane. Membrane Technology and Applications is the most authoritative overview available today of separation membranes, their theoretical underpinnings, manufacture and use.

This second edition has been fully revised and expanded to provide comprehensive, up-to-the. To remove excess water from the body during peritoneal dialysis, sugar is added to dialysis fluid. As sugar molecules cannot easily pass through the peritoneum membrane, body water passes through the peritoneum into the dialysis fluid, to balance out the difference in fluid concentration.

This process is known as osmosis. By continuously.Transport of water and salts through homogeneous hyperfiltration membranes Author: Chaudry, M. A. Awarding Body: University of Aberdeen Current Institution: University of Aberdeen Date of Award: Availability of Full Text.expand water supply to surrounding urban communities [2].

Membrane-based water treat-ment processes have great potential in sustainable water purification and provide a viable avenue for producing potable water from alternative water sources to meet global water demand.

RO membranes have become the world-wide leading desalination technology.