unit operation and unit process in environmental engineering - Wikitechy https://www.wikitechy.com/interview-questions/tag/unit-operation-and-unit-process-in-environmental-engineering/ Interview Questions Tue, 07 Sep 2021 11:26:08 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png unit operation and unit process in environmental engineering - Wikitechy https://www.wikitechy.com/interview-questions/tag/unit-operation-and-unit-process-in-environmental-engineering/ 32 32 What is unit operation ? https://www.wikitechy.com/interview-questions/chemical-engineering/what-is-unit-operation/ https://www.wikitechy.com/interview-questions/chemical-engineering/what-is-unit-operation/#respond Thu, 05 Aug 2021 06:58:47 +0000 https://www.wikitechy.com/interview-questions/?p=1481
  • In unit operations their is only physical change is occur but no chemical change take place or we can say no chemical reaction take place.
  • Evaporation, Distillation, Liquid liquid extraction, Drying, Size reduction, Crystallization are the example of unit operations.
  • In these operations thier is only physical change take place like phase will be change or two or more substances are separated each other or particle size will reduce.
  • Unit operations are processes related to physical changes of the materials involved:
    • Mixing (Solid-Solid, Solid-Liquid, Solid-Gas, Liquid-Liquid, Liquid-Gas, Gas-Gas)
    • Separating (Sieving, Filtration, Distillation, Fractional crystallization, Fractional freezing, Centrifugation)
    • Heating / Cooling of materials
    • Transporting (Solids, Granulates, Liquids, Slurries, Pastes, Gases)
    • Measuring (Weighing, Volumetrizing, Counting)

unit operation

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