環境資源工学
Online ISSN : 1349-9262
Print ISSN : 1348-6012
ISSN-L : 1348-6012
論説報文
ビール糟からのミネラル成分の溶出に関する研究
芝田 隼次村山 憲弘山本 秀樹松本 茂野岡本 裕行木下 宗茂
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2005 年 52 巻 4 号 p. 161-166

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Beer lees are a waste discharged in a large amount from a beer brewery. In order to convert beer lees to valuables, we have carried out the investigations for the production of beer lees charcoal, the evaluation of burning characteristics of the charcoal and the application of the charcoal to water purification. Beer lees contain 4.4% ash and the ash content of beer lees charcoal is 11.9%. The dissolution phenomena of minerals such as Zn, Fe, Ca, Mg, K, Na etc. from beer lees, beer lees charcoal and beer lees ash were examined by using lactic, tartaric and citric acid solutions as a solvent. The organic acids contained in natural plants were used for this purpose, as the dissolved solution may be used for food additives. These acids are considered to be effective for the dissolution of minerals due to the complex formation ability. The obtained results were evaluated using the conditional stability constants between minerals such as Zn, Ca and Mg, and the organic acid.

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© 2005 環境資源工学会
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