Open AccessFiltration technology for beer and beer yeast treatment
Author(s) -
Frank Rögener
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/941/1/012016
Subject(s) - filtration (mathematics) , microfiltration , waste management , hazardous waste , filter (signal processing) , pulp and paper industry , environmental science , chromatography , process engineering , chemistry , mathematics , membrane , engineering , biochemistry , statistics , electrical engineering
Solid-liquid filtration processes are crucial for the production of beer. Clarification of the green beer generates a clear and bright product with extended colloidal and microbiological shelf live. Conventionally, clear filtration is based on pre-coat filtration using filter aids, such as diatomaceous earth (Kieselguhr). However, the application of Kieselguhr requires strict adherence to occupational safety and health protection, as it is classified as a hazardous substance by the World Health Organisation and can lead to lung diseases. Furthermore, significant amounts of waste filter aids are generated. An alternative to pre-coat filtration is microfiltration that avoids the generation of hazardous wastes. Microfiltration can also be applied in beer yeast treatment. This article highlights major concepts and restriction of the filtration processes.