Particles in Water: Properties and Processes, 1st Edition (Hardback) book cover

Particles in Water

Properties and Processes, 1st Edition

By John Gregory

CRC Press

200 pages | 87 B/W Illus.

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pub: 2005-09-06
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Description

Based on the author’s more than 35 years of experience, Particles in Water: Properties and Processes examines particles and their behavior in water systems. The book offers clear and accessible methods for characterizing a range of particles both individually and as aggregates. The author delineates the principles for understanding particle properties and shows how such information contributes to the understanding and improvement of water treatment processes, including sedimentation, flocculation, and filtration. A distillation of the author's years of experience, the book explores practical applications of fundamental principles.

Outlining the origin, nature, and properties of particles in water, the author covers particle size, transport processes, and light scattering and provides a broad outline of important techniques for particle size determination. He discusses the important topic of surface charge, which plays a major role in colloid stability and interactions between particles, with some emphasis on the role of dissolved salts. The book gives an account of particle aggregation kinetics, the form of aggregates, and aggregate strength and explores coagulation and flocculation and the modes of action of some common additives used in these processes. The book concludes with an overview of important solid-liquid separation processes and the principles on which they are based.

The author presents the material in an easily accessible style, using just enough math to be clear but not so much as to be overwhelming. Highlighting the growing importance of advanced filtration systems in water treatment, this book provides an excellent summary of the behavior of particles in water systems and in relation to the techniques designed to capture and remove them.

Reviews

“For readers who are already familiar with the subject, or those who want to refresh their knowledge of some basics or prepare some extra slides for their environmental chemistry courses … Students, or even established researchers and practitioners, will profit from this book if the topic of particles in water is an interesting side-aspect of their work. … this book is an ideal starting point for those who are unfamiliar with the concepts of colloidal chemistry, before they move on to the more detailed and incomparably more extensive literature.”

— Thilo Hofmann, Frank von der Kammer, Department of Geosciences, Vienna University, Austria, in Angewandte Chemie, Vol. 46/20, May 2007

Table of Contents

INTRODUCTION

Particles in the Aquatic Environment

Colloidal Aspects

PARTICLE SIZE AND RELATED PROPERTIES

Particle Size and Shape

Particle Size Distributions

Particle Transport

Light Scattering and Turbidity

Measurement of Particle Size

SURFACE CHARGE

Origin of Surface Charge

The Electrical Double Layer

Electrokinetic Phenomena

COLLOID INTERACTIONS AND COLLOID STABILITY

Colloid Interactions – General Concepts

van der Waals Interaction

Electrical Double Layer Interaction

Combined Interaction – DLVO Theory

Non-DLVO Interactions

AGGREGATION KINETICS

Collision Frequency – Smoluchowski Theory

Collision Mechanisms

Form of Aggregates

Strength and Breakage of Aggregates

COAGULATION AND FLOCCULATION

Terminology

Hydrolyzing Metal Coagulants

Polymeric Flocculants

SEPARATION METHODS

Introduction

Flocculation Processes

Sedimentation

Flotation

Filtration

Subject Categories

BISAC Subject Codes/Headings:
SCI013050
SCIENCE / Chemistry / Physical & Theoretical
TEC010000
TECHNOLOGY & ENGINEERING / Environmental / General
TEC010030
TECHNOLOGY & ENGINEERING / Environmental / Water Supply