METTLER TOLEDO is pleased to present a new installment in its thought-leading on-demand webinar series on Process Analytical Technology (PAT). The presentation, entitled "PAT-Based Design of Continuous Crystallizations"
Guest presenter Steven Ferguson, Biogen Idec, Cambridge, Massachusetts, developed the experiment series while working on his PhD as part of the Glennon Research Group (SSPC) at University College, Dublin. He also spent time at Novartis/ MIT Center for Continuous Manufacturing and Department of Chemical Engineering, as a post-doctoral associate with a focus on continuous crystallization, isolation and polymorphism.
A plug flow crystallization platform was developed that allowed PAT to be applied in situ via the use of novel flow cells to develop the anti-solvent crystallization of benzoic acid from aqueous ethanol solution. Equivalent tank-based MSMPR crystallizations using a pneumatic slurry transfer were also characterized using PAT. Both methods were then compared to equivalent batch crystallizations to gain their true performance measure.
As expected, continuous crystallization offered significantly intensified production, with approximately the same material generated by ~33 ml plug flow, 9 L MSMPR, and 42, 10,000 L batch crystallizations per annum. Furthermore, non-batch processing enabled production of a wider range of particle sizes and morphologies, with plug flow generating the highest possible supersaturation when feed and anti-solvent streams were perfectly mixed.
Despite its relatively small volume, under optimum conditions the plug flow device proved capable of producing 60 kilos a day of dry, isolated benzoic acid, providing production-scale pharmaceutical development with lab-scale equipment. Screening methodologies to determine if plug flow crystallization is appropriate for a particular chemistry is also explored, as is using FBRM and Particle Vision Microscopy (PVM) to monitor and maximize operating conditions.
For research details, as well as to explore the use of PAT in situ to reduce process development time and control continuous industrial crystallization, please view the 25-minute presentation today at: http://www.mt.com/
About Mettler Toledo:
METTLER TOLEDO specializes in the area of precision instruments for professional use. METTLER TOLEDO laboratory instruments are used in research, scientific, drug discovery, and quality control labs, amongst many others in the pharmaceutical, chemical, food and cosmetics industries. METTLER TOLEDO comprehensive industrial solutions cover the various steps in a host of manufacturing processes at many of the same customers that laboratory serves. Solutions range from receiving raw materials through various manufacturing processes, in-line process control and end-of-line packaging control, to logistics and shipping. Increasingly, these solutions are fully integrated into the customer's IT environment, helping automate their workflows. In food retail, our offering for fresh food management ranges from receiving and pre-packaging, to in-store solutions for self-service departments, deli counters, and checkout terminals.
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