Download Colloid and interface chemistry for water quality control by Qing Chang PDF

By Qing Chang

Colloid and Interface Chemistry for Water caliber Control offers uncomplicated yet crucial wisdom of colloid and interface technological know-how for water and wastewater therapy. Divided into sections, chapters 1 to 8 presents colloid chemistry together with uncomplicated historical past and easy innovations, diffusion and Brown movement, sedimentation, osmotic strain, optical homes, rheology houses, electrical homes, emulsion, foam and gel, and so forth; chapters nine to offers interface chemistry theories together with the skin of liquid, the skin of resolution, and the outside of stable. This necessary booklet is the one person who offers colloid and interface chemistry from the water quality controls standpoint. This booklet used to be written for graduate scholars within the zone of water remedy and environmental engineering, and it may be used because the reference for researchers and engineers within the related area.

  • Concise content material makes this compatible for either instructing and learning
  • Focuses on water remedy know-how and techniques, hyperlinks colloid and floor chemistry to water remedy applications
  • Not in simple terms addresses all of the very important physical-chemistry ideas and theories, but additionally provides new constructed wisdom on water treatment
  • Includes workouts, difficulties and suggestions, that are very precious for trying out studying and understanding

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11) Therefore, we have the following: 1. The concentration of sodium chloride on the two sides of the semipermeable membrane are different. This concentration difference causes osmotic pressure. The higher the charge of polyelectrolytes, the higher the osmotic pressure. 2. Nearly all of the sodium chloride is on the right side of the semipermeable membrane when m1 ≫ m2. 3. Sodium chloride is equally distributed on both side of the semipermeable membrane when m2 ≫ m1. When measuring the molecular weight of polyelectrolytes, the effect of Donnan equilibrium should be eliminated by these methods: 1.

3. The structure is simple and easy for the operator to replace the liquid. Here we introduce the Fuoss–Mead osmometer. 3. Owing to the high ratio of membrane surface area to solution volume, the approach to equilibrium is rapid. With fast membranes, using the half-sum method, measurements in well under 1 h are possible. 2 Semipermeable Membrane In many ways the semipermeable membrane is the central feature of osmometry. It should meet the following requirements: 1. It is able to retain macromolecules, otherwise the “leak” between the two compartments would result in errors or totally invalidate the results.

For a spherical particle, the friction factor is given by Stokes’s law Colloid and Interface Chemistry for Water Quality Control. 00003-7 Copyright © 2016 Chemical Industry Press. Published by Elsevier Inc. under an exclusive license with Chemical Industry Press. All rights reserved. 4) Therefore, Eq. 5) 9η This is the equation of particle sedimentation in a gravity field. It indicates that 1. The settling velocity of a particle is proportional to the particle radius squared, which means the velocity strongly depends on the size of the particle.

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