Sedimentation and Flocculating Properties of Solid Particles in Enzymatic Treated Rice Washing Drainage and Its Mechanism
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概要
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This research examined cationic ion participation with flocculation and sedimentation phenomena by the enzyme addition of solid particles derived from rice washing drainage and the electrochemical properties of the solid particle surface. Solid particle removal characteristics by the addition of flocculation and sedimentation ability were also examined. As a result, a solid particle of the supernatant after enzyme treatments and sedimentation obtained by the addition of protease M showed minimum value in all parameters such as mean value, etc. of the particle diameter compared with other enzyme additions. Moreover, to specify the negatively charged functional group using FT-IR analysis, the adsorption increases of hydroxyl (-OH) group was confirmed by protease M treatment. It was thought that the negative electron charges of hydroxyl (-OH) origin in the solid particle surface increased by protease M treatment and decreased the capacity of sludge volume (SV) value. In addition, from the results of the effect of chelate agent additions for sludge volume, flocculation and sedimentation of solid particles deeply depended on cationic ion of solid particle origin. These results suggest the occurrence of flocculation and the sedimentation of solid particles by the addition of protease M as a result of the formation of negative electron charges in solid particle surface and cationic ion discharges from solid particles were promoted by enzyme addition, respectively. Finally, macromolecule was formed by constructing a bridge by electrostatic interaction.
- 日本食品工学会の論文
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