Concentration of whey solutions by foam fractionation

Aubrey Shea, J. N. Swamy, Czarena Crofcheck

Research output: Contribution to conferencePaperpeer-review


Recent studies have shown that whey proteins serve a variety of useful purposes from improving flavor in meat to improving the texture of ice cream. During cheese production a large volume of whey is produced which is typically considered a waste stream. Recovery of whey solution from this waste stream via concentration would not only reduce waste disposal costs but also provide for a valuable co-processing stream. Adsorptive bubble separation techniques like foam fractionation offer a cheap and simple way to recover high value components from industrial waste solutions. In foam fractionation, gas is bubbled through a dilute protein solution and the proteins adhere to the rising bubbles. The foam thus obtained is a protein rich solution. The goal of the current study is to examine the use of foam fractionation to reduce the volume of whey wastes from dairy industry via concentration. A design of experiments strategy using response surface methodology is used to investigate the influence of feed concentration, pH, and flow rate on the foaming performance. Since the whey solutions are composed of several component proteins (á-lactalbumin, â-lactoglobulin, BSA, etc), the results are discussed in the light of their relative separation efficiencies.

Original languageEnglish
Number of pages1
StatePublished - 2005
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: Oct 30 2005Nov 4 2005


Conference05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
Country/TerritoryUnited States
CityCincinnati, OH

ASJC Scopus subject areas

  • General Engineering


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