Drying & Mixing Notes U-3
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Drying
- Drying
- Equilibrium Moisture Content (EMC)
- Heat Transfer Mechanisms
- Rate of Drying Curve
- Tray Dryer
- Drum Dryer
- Spray Dryer
- Fluidized Bed Dryer
- Vacuum Dryer
- Freeze Dryer (Lyophilizers)
Mixing
- Mixing
- Differences Between Solid and Liquid Mixing
- Steam Jacketed Kettle
- Mechanism of Solid Mixing
- Mechanism of Liquid Mixing
- Double Cone Blender
- Twin Shell Blender (V-Blender)
- Ribbon Blender
- Sigma Blade Mixer
- Planetary Mixers
- Propellers
- Turbines
- Paddles
- Silverson Emulsifier
Other Units of Pharmaceutical Engineering
Pharmaceutical Engineering
Other Subjects of B Pharmacy 3rd Semester
Topic wise notes of:
Pharmaceutical Organic Chemistry II
- Benzene & It’s Derivative
- Phenols, Aromatic Amines & Acids
- Fats & Oils
- Polynuclear Hydrocarbons
- Cycloalkanes
Topic wise notes of:
Pharmaceutical Microbiology
- Introduction to Microbiology and Bacterial Cultivation Techniques
- Sterilization Techniques and Staining Methods
- Fungi, Viruses, and Sterility Testing
- Contamination and Assay Methods
- Microbial Spoilage & Cell Culture
Drying & Mixing-Unit III-Summary
This unit focuses on two key pharmaceutical operations: drying and mixing.
Drying is essential for removing moisture to enhance product stability, reduce weight, and prevent microbial growth. The unit explains the objectives, applications, and mechanism of the drying process, emphasizing the significance of Equilibrium Moisture Content (EMC) and the rate of drying curve. Various types of dryers are covered in detail, including the tray dryer, drum dryer, spray dryer, fluidized bed dryer, vacuum dryer, and freeze dryer. For each type, the principles, construction, working mechanisms, advantages, and limitations are discussed.
Mixing is critical for ensuring uniformity in pharmaceutical formulations. The unit describes the objectives, applications, and influencing factors in mixing processes. It highlights the differences between solid, liquid, and semisolid mixing along with their respective mechanisms. Various mixing equipment are explained, including the double cone blender, twin shell blender, ribbon blender, sigma blade mixer, planetary mixers, propellers, turbines, paddles, and the Silverson emulsifier. Each device is examined for its working principle, construction, practical uses, and pros and cons.
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