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Ultrasonic Mastering of Filter Flow and Antifouling of Renewable Resources
Author(s) -
Radziuk Darya,
Möhwald Helmuth
Publication year - 2016
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201500960
Subject(s) - process engineering , fouling , filtration (mathematics) , biofouling , mass transfer , environmental science , flow (mathematics) , ultrasonic sensor , renewable energy , nanotechnology , biochemical engineering , computer science , chemistry , materials science , engineering , mechanics , physics , membrane , acoustics , chromatography , biochemistry , statistics , mathematics , electrical engineering
Inadequate access to pure water and sanitation requires new cost‐effective, ergonomic methods with less consumption of energy and chemicals, leaving the environment cleaner and sustainable. Among such methods, ultrasound is a unique means to control the physics and chemistry of complex fluids (wastewater) with excellent performance regarding mass transfer, cleaning, and disinfection. In membrane filtration processes, it overcomes diffusion limits and can accelerate the fluid flow towards the filter preventing antifouling. Here, we outline the current state of knowledge and technological design, with a focus on physicochemical strategies of ultrasound for water cleaning. We highlight important parameters of ultrasound for the delivery of a fluid flow from a technical perspective employing principles of physics and chemistry. By introducing various ultrasonic methods, involving bubbles or cavitation in combination with external fields, we show advancements in flow acceleration and mass transportation to the filter. In most cases we emphasize the main role of streaming and the impact of cavitation with a perspective to prevent and remove fouling deposits during the flow. We also elaborate on the deficiencies of present technologies and on problems to be solved to achieve a wide‐spread application.