Study on Flocculation Process and Optimal Stirring Speed of Compound Traditional Chinese Medicine

Abstract

In order to optimize the flocculation process of compound traditional Chinese medicine and improve the clarity and quality of solution, the natural macromolecule flocculant chitosan was used to flocculate the compound traditional Chinese medicine Shuangsang soup. In the analysis of different factors affecting the flocculation effect, grain size analysis method was used to focus on the influence of stirring speed on flocculation effect. Finally, the optimal flocculation conditions were obtained by orthogonal experiment as follows: the dosage of chitosan was 0.385g/L, the temperature was 40°C, the stirring speed was 30r/ min, at the same time, the stirring method, which is first rapid stirring with 60s, and then slow stirring with 240s was applicated during mixing the solution. The results showed that, with this process condition, not only the effective component loss rate of compound traditional Chinese medicine Shuangsang soup was reduced to a minimum; the flocculating rate was raised to the highest, but also the energy could be saved, the production cost could be reduced, in the end, the process optimization was truly achieved.