hydrolysis

Study on the Effective Application of Bacterial α-Amylase for Batch Liquefaction

The influence of the bacterial α-amylase type and temperature on the accumulation of soluble dry matter and reducing sugars during fermentation of wheat batch has been investigated. The correlation between thermal stability of α-amylase and process parameters is shown. The initial activity of the enzyme preparation affects the starch hydrolysis intensity. The change in the enzymes activity, occurred due to their inactivation at high temperatures, affects the maximum content of dry matter and reducing sugars in the liquefied matter.

Kinetic Modeling Studies of Enzymatic Purification of Glucomannan

Purification of glucomannan by hydrolising starch – the main contaminant – was studied. Hydrolysis removed 88.7 % of starch. The highest glucomannan сontent was found to be 73.35 %. The sample showed the comparable infrared spectra to those of the commercial glucomannan. The kinetics of enzymatic hydrolysis was evaluated using the Michaelis-Menten model.

Дослідження процесу розділення глинистих суспензій з використанням флокулянтів

The paper presents the results of research of the separation of suspensions using flocculants based on polyacrylamide. The mechanism of the floccule formation, as well as polyacrylamide adsorption on the surface of clay particles, depending on the concentration of solids in suspension and flocculant costs are described. An optimal concentration of solids in suspension and flocculant consumption rate which the highest rate of the solid phase deposition is identified. Наведено результати дослідження процесу розділення суспензій з використанням флокулянтів на основі поліакриламіду.

Застосування поліакриламідних флокулянтів для розділення глинистих суспензій

The paper presents the results of research of the separation of suspensions using flocculants based on poly. The essence and process flokuloutvorennya polyacrylamide adsorption on the surface of clay particles, depending on the concentration of solids in suspension and flocculant costs. An optimal concentration of solids in suspension and flocculant consumption at which the highest rate of deposition of solid phase. Наведено результати дослідження процесу розділення суспензій з використанням гідролізованого флокулянта на основі поліакриламіду.

Research of Corrosive Destruction Mechanism of Cordierite-Mullite Refractory Materials

Reasons and mechanism of cordierite-mullite refractory materials destruction in the ovens for glazing ceramic wares baking have been examined. The change of elemental and phase compositions of refractory surface layers under the influence of cyclic action of water vapour and volatile components of glazing coating has been established. The ways of increasing cordierite-mullite refractory materials longevity have been proposed.