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Continuous foam separation and activated carbon filtration to clarify dilute colloidal suspensions
Author(s) -
Grieves Robert B.,
Bewley Jerry L.
Publication year - 1972
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450500221
Subject(s) - filtration (mathematics) , volume (thermodynamics) , pulmonary surfactant , activated carbon , chromatography , suspended solids , effluent , chemistry , colloid , particulates , chemical engineering , environmental engineering , adsorption , wastewater , environmental science , organic chemistry , mathematics , biochemistry , statistics , physics , quantum mechanics , engineering
A 380 gal/day (1.0 liter/min) foam separation‐activated carbon filtration unit, designed from a laboratory‐scale unit, has been tested with naturally‐occurring suspensions of sand, clay, and humus containing up to 210 mg/l suspended solids. Foam separation results have been subjected in detail to stepwise, multiple, linear repression analysis, yielding the ratio of the effluent to the feed particulate concentration as a power function of the feed surfactant concentration and the volume of air required per unit volume of feed clarified. The total operating cost function, including surfactant, air, and the capacity of the granular activated carbon, can be minimized, with operating costs from 38 to 97¢/1000 gal. for feed suspensions containing 35 to 210 mg/l suspended solids. Scale‐up factors are included.