Short answer

Implement continuous mixing technologies and leverage process modelling to achieve reliable and reproducible crystallisation of organic salts, ensuring desired polymorphic forms.

Field: Commercial Production
Source: Frontiers in Chemical Engineering (2022)
Method: Experimental and Modelling
Evidence: Strong effect

Utilizing continuous mixing technologies allows for precise control over the crystallisation of organic salts, ensuring consistent yield, particle size, and polymorphic form. This commercial production research insight is drawn from a 2022 study published in Frontiers in Chemical Engineering. Using Experimental and modelling, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Implement continuous mixing technologies and leverage process modelling to achieve reliable and reproducible crystallisation of organic salts, ensuring desired polymorphic forms.

Study

Commercial ProductionHigh ImpactStrong effect

Continuous crystallisation yields consistent polymorphic control in organic salt production

Utilizing continuous mixing technologies allows for precise control over the crystallisation of organic salts, ensuring consistent yield, particle size, and polymorphic form.

Frontiers in Chemical Engineering · 2022

Key Findings

01Continuous mixing approaches can successfully crystallise EDNB with consistent yield and particle size distribution.
02Continuous mixing allows for control over the polymorphic form of the EDNB salt.
03A solution speciation model aided in process understanding and development.

Application

Design takeaway

Implement continuous mixing technologies and leverage process modelling to achieve reliable and reproducible crystallisation of organic salts, ensuring desired polymorphic forms.

How to apply

When designing or optimising processes for producing crystalline organic compounds, especially pharmaceuticals, consider adopting continuous flow reactors and mixers. Utilize process analytical technology (PAT) and modelling to monitor and control critical process parameters like mixing intensity and residence time.

Project actions

01When investigating continuous processing, clearly define the critical quality attributes (CQAs) you aim to control, such as yield, particle size, and polymorph.
02Consider the scale-up implications of your chosen continuous mixing technology.

Method & Evidence

AimCan continuous mixing approaches be effectively employed to achieve consistent yield, particle size distribution, and polymorphic control during the crystallisation of organic salts?

MethodExperimental and Modelling

ProcedureThe study involved crystallising the organic salt ethylenediammonium 3,5-dinitrobenzoate (EDNB) in both semi-batch and continuous processes. Various continuous mixers (co-axial, Ehrfeld, X-mixer) were used. A solution speciation model was developed and applied to understand and guide the crystallisation process.

ContextPharmaceutical manufacturing and chemical engineering

Variables

IVType of continuous mixer, process parameters (e.g., flow rate, residence time)

DVYield, particle size distribution, polymorphic form

CVSolvent system, initial concentrations, temperature

Strengths & Limitations

Strengths

+Demonstrates practical application of continuous processing for a critical industrial step.
+Integrates experimental work with process modelling for enhanced understanding.

Limitations

Replicating the exact continuous mixers used in the study might be difficult. Access to advanced modelling software could also be a constraint.

Reliability & validity

The study's reliability is supported by the use of a speciation model to guide experiments and the consistent results obtained across different continuous mixer types. Validity is established by demonstrating control over specific, measurable outcomes (yield, particle size, polymorph).

Think critically

To what extent can the principles of continuous crystallisation demonstrated for EDNB be applied to other classes of organic compounds or inorganic materials?

Design Principles

"Process consistency and control are enhanced through continuous manufacturing methodologies."

In industries like pharmaceuticals, where the specific crystalline form of an active ingredient can significantly impact efficacy and stability, achieving consistent polymorphic control is paramount. Continuous processing offers a scalable and reproducible method to meet these stringent quality demands.

What This Means for Your Design

Using continuous mixers for making organic salts (like in medicines) leads to more predictable results in terms of how much you make, the size of the crystals, and the exact crystal shape, which is important for how well the medicine works.

How to use in your project

1.Reference this study when discussing the benefits of continuous manufacturing for achieving consistent product quality and control over material properties in your design project.

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Quick Cite

Paragraph starter

The research by McGinty et al. (2022) highlights the efficacy of continuous mixing technologies in achieving precise control over organic salt crystallisation. Their findings demonstrate that continuous processes can yield consistent results in terms of product yield, particle size distribution, and, crucially, polymorphic form, which is vital for applications such as pharmaceuticals where material properties directly influence performance and safety.

Source

Frontiers in Chemical Engineering

Continuous crystallisation of organic salt polymorphs

journal · 2022

View source

Questions About This Research

What does the research say about continuous crystallisation yields consistent polymorphic control in organic salt production?: Implement continuous mixing technologies and leverage process modelling to achieve reliable and reproducible crystallisation of organic salts, ensuring desired polymorphic forms. Evidence: Frontiers in Chemical Engineering (2022).
Why does "Continuous crystallisation yields consistent polymorphic control in organic salt production" matter for design?: In industries like pharmaceuticals, where the specific crystalline form of an active ingredient can significantly impact efficacy and stability, achieving consistent polymorphic control is paramount. Continuous processing offers a scalable and reproducible method to meet these stringent quality demands.
How can designers apply this research?: Implement continuous mixing technologies and leverage process modelling to achieve reliable and reproducible crystallisation of organic salts, ensuring desired polymorphic forms.
What were the main findings?: Continuous mixing approaches can successfully crystallise EDNB with consistent yield and particle size distribution.. Continuous mixing allows for control over the polymorphic form of the EDNB salt.. A solution speciation model aided in process understanding and development.
What research method was used?: Experimental and Modelling.
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2022 journal from Frontiers in Chemical Engineering.
What should I do differently in my next project?: When designing or optimising processes for producing crystalline organic compounds, especially pharmaceuticals, consider adopting continuous flow reactors and mixers. Utilize process analytical technology (PAT) and modelling to monitor and control critical process parameters like mixing intensity and residence time.
What are the limitations?: The study focused on a single model compound (EDNB); generalizability to all organic salts may require further investigation. The specific performance of different continuous mixer types might vary.