Kvasny Prum. 1978; 24(5): 103-106 | DOI: 10.18832/kp1978016

Removing Volatile Compounds from Sulphite Waste Liquor Used for Making Feed Yeast.Peer-reviewed article

M. ŠESTÁKOVÁ, F. ŠTROS

A simple laboratory distilling apparatus has been employed to study the decrease of SO₂ , formic acid and acetic acid amounts in three samples of sulphite waste liquor, caused by water steam passing through them. The most pronounced decrease was achieved with steam amounts up to 5g. An average rediction of the SO₂ concentracion was 25-30%. The figure for acetic acid in Na-bisulphite waste liquor was reduced by 76,2%, in Ca- and Mg bisulphite waste liquors by 71,6 and 79,0%, respectively. Since in Na-bisulphite waste liquor the proportion of SO₂ is high and liquor also contains from 3 to 5,5 g.l^-1 of acetic acid, the authors maintain, that it is necessary to find ways, how to eleminate residue SO₂ and to adjust the processing technology to the amount and effects of acetic acid present in the sulphite fementing medium.
(In Czech, English summary only)

Keywords: feed yeats, volatile compounds, sulphite waste

Published: May 1, 1978