Study on Macroscopic Aggregation of Silica Suspensions and Sewage

✍ Scribed by Lech Smoczyński; Regina Wardzyńska

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 336 KB
• Volume: 183
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1996.0551

✦ Synopsis

M(R) ϰ R D , (SiO 2 ) n aggregates flocculated with Al and Fe coagulants were studied. An advanced photographic method for measuring the size where M is the mass contained in the sphere of radius (diamand velocity of the aggregates was applied. Fractal dimension D eter) R centered at a given point on the object.

Å 1.64-1.95 for 1000 measured aggregates at mean determination Knowledge of aggregate structure and aggregation models coefficient rV 2 Å 0.940 was calculated. A high variety of ''solid has been gained from numerical investigations because of mass'' contributions (a relative smc ranged from 1 to 18.5) to the total mass of the average sludge were ascertained. Some implica-the poor accuracy of the experimental work. Every theory, tions of the process of aggregations studied were supplied. Fractal however, needs some support from true experimental data.

dimension was recognized as a powerful tool in any aggregate

In this study Ludox HS 40 silica was chosen as a model approach, being sensitive enough to distinguish many subtle variesystem, as its structure, behavior, and properties seem to ties.