Role of Coagulation in the Kinetics of Sedimentation

Kevin J. Farley; Françols M. Morel

doi:10.1021/es00144a014

Role of Coagulation in the Kinetics of Sedimentation

Kevin J. Farley, Françols M. Morel

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Abstract

The combined results of analytical, numerical, and laboratory studies are used in examining the kinetic behavior of sedimentation in well-mixed systems. The rate of mass removal of solids, dC/dt, as a function of mass concentration C, can be described as the sum of three power laws, dC/dt =-B_dsC^2. ³-B_shC^1.9-B_bC^1.3, each term of which corresponds to a particular coagulation mechanism: differential settling, shear, and Brownian motion. Empirical relationships for the coefficients B_ds, B_sh, and B_b as a function of system parameters are provided.

Original language	English (US)
Pages (from-to)	187-195
Number of pages	9
Journal	Environmental Science and Technology
Volume	20
Issue number	2
DOIs	https://doi.org/10.1021/es00144a014
State	Published - Feb 1986

All Science Journal Classification (ASJC) codes

General Chemistry
Environmental Chemistry

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abstract = "The combined results of analytical, numerical, and laboratory studies are used in examining the kinetic behavior of sedimentation in well-mixed systems. The rate of mass removal of solids, dC/dt, as a function of mass concentration C, can be described as the sum of three power laws, dC/dt =-BdsC2. 3-BshC1.9-BbC1.3, each term of which corresponds to a particular coagulation mechanism: differential settling, shear, and Brownian motion. Empirical relationships for the coefficients Bds, Bsh, and Bb as a function of system parameters are provided.",

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year = "1986",

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AU - Morel, Françols M.

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N2 - The combined results of analytical, numerical, and laboratory studies are used in examining the kinetic behavior of sedimentation in well-mixed systems. The rate of mass removal of solids, dC/dt, as a function of mass concentration C, can be described as the sum of three power laws, dC/dt =-BdsC2. 3-BshC1.9-BbC1.3, each term of which corresponds to a particular coagulation mechanism: differential settling, shear, and Brownian motion. Empirical relationships for the coefficients Bds, Bsh, and Bb as a function of system parameters are provided.

AB - The combined results of analytical, numerical, and laboratory studies are used in examining the kinetic behavior of sedimentation in well-mixed systems. The rate of mass removal of solids, dC/dt, as a function of mass concentration C, can be described as the sum of three power laws, dC/dt =-BdsC2. 3-BshC1.9-BbC1.3, each term of which corresponds to a particular coagulation mechanism: differential settling, shear, and Brownian motion. Empirical relationships for the coefficients Bds, Bsh, and Bb as a function of system parameters are provided.

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Role of Coagulation in the Kinetics of Sedimentation

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