Journal
ULTRASONICS SONOCHEMISTRY
Volume 76, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2021.105625
Keywords
Ultrasound; Combination; Hybrid; Innovative techniques; Intensification; Mechanisms
Categories
Funding
- BiOrbic SFIBioeconomy Research Centre - Ireland's European Structural and Investment Programmes, Science Foundation Ireland [16/RC/3889]
- European Regional Development Fund
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Ultrasound has a significant impact on various processes in industries such as food, perfume, cosmetics, pharmaceuticals, bio-fuel, materials, and fine chemicals. When combined with traditional or innovative techniques, ultrasound can enhance energy transfer and mass transfer, leading to increased production efficiency and output.
Ultrasound has a significant effect on the rate of various processes in food, perfume, cosmetic, pharmaceutical, bio-fuel, materials, or fine chemical industries, despite some shortcomings. Combination with other conventional or innovative techniques can overcome these limitations, enhance energy, momentum and mass transfer, and has been successfully demonstrated in many recent studies. Various ultrasound combined hybrid and innovative techniques are systematically summarized in this review for the first time. Ultrasound can be combined with diverse conventional techniques including Soxhlet, Clevenger, enzyme, hydrotropes, ionic liquids, Deep Eutectic Solvents (DES) or Natural Deep Eutectic Solvents (NADES), to enhance mixing and micro-mixing, reduced thermal and concentration gradients, and selective extraction. Moreover, combinations of ultrasound with other innovative techniques such as microwave, extrusion, supercritical fluid, subcritical and pressure liquids, Instant controlled pressure drop (DIC), Pulsed Electric Field (PEF), Ultra-Violet (UV) or Infra-Red (IR) radiations, Counter-current chromatography (CCC), or centrifugal partition chromatographs (CPC) can enable reduced equipment size, faster response to process control, faster start-up, increased production, and elimination of process steps. The theories and applications of these ultrasound combined hybrid and innovative techniques as well as their advantages and limitations are compared, and further perspectives are proposed. This review provides new insights into advances in ultrasound combined techniques and their application at research, educational, and industrial level in modern food and plant-based chemistry.
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