Characteristics of malts and effluents produced during wheat malting according standard micromalting procedure or by simulation of plant conditions
1995
Grujic, O.S. | Sciban, M.B. | Gacesa, S.B. (University of Novi Sad, Novi Sad (Yugoslavia). Faculty of Technology)
Micromalting of two kinds of wheat was carried out in a micromalting plant, applying two types of steeping: a) in a steeping box following a standard procedure (steeping water volume of 50 liters per kg of wheat) and b) steeping with 1.5 liter of water per 1 kg of initial wheat; steeping water was exchanged three times. Analysis of the obtained wheat malt samples indicated that, during simulated operating conditions, slightly less modified was produced, when steeping was carried out in a smaller water volume; this partially answered the question why the same sample of wheat or barley, under identical conditions, gave better malt in a micromalting plant than under operating conditions. Effluents analysis showed 2 to 3 times greater secretion of organic components in a micromalting box (measured as HPK) than during operating conditions simulation. Malting plant effluents, having the quality obtained in operating conditions, could be purified with two serially linked biological filters, 1.5-2 m high. As regards the origin and properties of malting plant effluents, however, it has been suggested that, whenever it is technically feasible, they should not be purified, but discharged on (surrounding) agricultural area.
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