Simulation of Hindered-Settling Column Separations for Soil Remediation

A phenomenological model was developed to describe the operation of a hindered-settling column. The model is based on the convection-diffusion equation as applied to hindered-settling conditions. Simulation results for the size classification of soil were compared with experimental results to valida...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering Toxic/hazardous substances & environmental engineering, 2004-01, Vol.39 (1), p.19-33
Main Authors: Kim, Bruce H., Klima, Mark S.
Format: Article
Language:English
Subjects:
Computer simulation
Contaminants
Density
Density separation
Diffusion
Environment
Gravitation
Gravity concentration
Heavy metals
Mathematical models
Metals, Heavy - isolation & purification
Models, Theoretical
Organic Chemicals - isolation & purification
Partitions
Refuse Disposal
Separation
Soil (material)
Soil Pollutants - isolation & purification
Soil remediation
Soil washing
Teeter bed
Toxic
Toxic hazards
Waste remediation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A phenomenological model was developed to describe the operation of a hindered-settling column. The model is based on the convection-diffusion equation as applied to hindered-settling conditions. Simulation results for the size classification of soil were compared with experimental results to validate the model. Subsequent simulations were carried out to evaluate column performance for separating heavy metal or organic contaminants from soil. The simulation results are presented in terms of fractional recovery (partition) curves, which give the probability that feed particles of a given size and density will be recovered in the column underflow stream. The results indicate that good separations are possible down to approximately 75 µm in some cases. The effective size range of separation depends on the design and operating conditions of the hindered-settling column and on the material being processed.
ISSN:1093-4529
1532-4117
DOI:10.1081/ESE-120027366