Abstract
Online control of industrial processes by lean principle increases productivity and yields higher product quality. Polysaccharides are dissolved in liquids, such as water, in many industrial products, like paints, cosmetics and culinary products. In these products, it is important to control viscosity or create thixotropy and yield stress for product functionality. Electromagnetic field and electrical conductivity techniques were applied to a meter polysaccharide dissolution process online up to a 0.5 wt% concentration, and the resultant solution was also further tested by UV–Vis spectrophotometry. The electromagnetic field technique measures changes in the local electrical permittivity of the liquid and the interest in this research were to find out whether the changes correlate to the concentration changes during the dissolution of polymer polysaccharide. The results that were obtained showed good consistency, suggesting the feasibility of the electromagnetic field technique in online monitoring of a polysaccharide suspension concentration. Moreover, this technique gives the advantage of instant monitoring of a polysaccharide dissolution for improved process control.Graphic abstract
Highlights
Concentration metering of solutions is crucial in most industrial processes, and important in many areas such as environmental engineering, bioengineering and chemical engineering
The CIV variable of the Electromagnetic field (EMF) technique and the electrical conductivity had a similar correlation with the dissolution profile in online experiments
The results were consistent with theories of dissolving and both techniques can be used to monitor the PS dissolution process
Summary
Concentration metering of solutions is crucial in most industrial processes, and important in many areas such as environmental engineering, bioengineering and chemical engineering. Keywords Dissolution · Electrical conductivity · Electromagnetic field · Online monitoring · Polysaccharide After the online dissolution experiment, the CIV and conductivity were measured again for a few minutes to obtain the result for PS concentration 0.500 wt%.
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