Determination of the Metastable Zone Width and Nucleation Parameters of Succinic Acid for Electrochemically Induced Crystallization

Electrified downstream processes for biotechnologically produced carboxylic acids reduce waste salt generation significantly and make biotechnological production ecologically economically more attractive. In order to design, optimize, scale-up control electrochemically induced crystallization processes, knowledge of the metastable zone width (MSZW) is essential. An optical observation approach nucleation close electrode determination MSZW presented. This work presents a method measurements pH-shift by monitoring nucleation, saturation pH value concentration different current densities. The measured MSZWs are narrow due foreign surface, gas bubbles rising densities lead even smaller MSZW. Nucleation parameters estimated from MSWZ data, adapting classical Nývlt crystallization.