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Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water

Hydrodynamic cavitation (HC) is being increasingly used in a wide range of applications. Unlike ultrasonic cavitation, HC is scalable and has been used at large scale industrial applications. However, no information about influence of scale on performance of HC is available in the open literature. I...

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Autores principales: Ranade, Vivek V., Prasad Sarvothaman, Varaha, Simpson, Alister, Nagarajan, Sanjay
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7786610/
https://www.ncbi.nlm.nih.gov/pubmed/32791465
http://dx.doi.org/10.1016/j.ultsonch.2020.105295
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author Ranade, Vivek V.
Prasad Sarvothaman, Varaha
Simpson, Alister
Nagarajan, Sanjay
author_facet Ranade, Vivek V.
Prasad Sarvothaman, Varaha
Simpson, Alister
Nagarajan, Sanjay
author_sort Ranade, Vivek V.
collection PubMed
description Hydrodynamic cavitation (HC) is being increasingly used in a wide range of applications. Unlike ultrasonic cavitation, HC is scalable and has been used at large scale industrial applications. However, no information about influence of scale on performance of HC is available in the open literature. In this work, we present for the first time, experimental data on use of HC for degradation of complex organic pollutants in water on four different scales (~200 times scale-up in terms of capacity). Vortex based HC devices offer various advantages like early inception, high cavitational yield and significantly lower propensity to clogging and erosion. We have used vortex based HC devices in this work. 2,4 dichloroaniline (DCA) – an aromatic compound with multiple functional groups was considered as a model pollutant. Degradation of DCA in water was performed using vortex-based HC devices with characteristic throat dimension, d(t) as 3, 6, 12 and 38 mm with scale-up of almost 200 time based on the flow rates (1.3 to 247 LPM). Considering the experimental constraints on operating the largest scale HC device, the experimental data is presented here at only one value of pressure drop across HC device (280 kPa). A previously used per-pass degradation model was extended to describe the experimental data for the pollutant used in this study and a generalised form is presented. The degradation performance was found to decrease with increase in the scale and then plateaus. Appropriate correlation was developed based on the experimental data. The developed approach and presented results provide a sound basis and a data set for further development of comprehensive multi-scale modelling of HC devices.
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spelling pubmed-77866102021-01-06 Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water Ranade, Vivek V. Prasad Sarvothaman, Varaha Simpson, Alister Nagarajan, Sanjay Ultrason Sonochem Original Research Article Hydrodynamic cavitation (HC) is being increasingly used in a wide range of applications. Unlike ultrasonic cavitation, HC is scalable and has been used at large scale industrial applications. However, no information about influence of scale on performance of HC is available in the open literature. In this work, we present for the first time, experimental data on use of HC for degradation of complex organic pollutants in water on four different scales (~200 times scale-up in terms of capacity). Vortex based HC devices offer various advantages like early inception, high cavitational yield and significantly lower propensity to clogging and erosion. We have used vortex based HC devices in this work. 2,4 dichloroaniline (DCA) – an aromatic compound with multiple functional groups was considered as a model pollutant. Degradation of DCA in water was performed using vortex-based HC devices with characteristic throat dimension, d(t) as 3, 6, 12 and 38 mm with scale-up of almost 200 time based on the flow rates (1.3 to 247 LPM). Considering the experimental constraints on operating the largest scale HC device, the experimental data is presented here at only one value of pressure drop across HC device (280 kPa). A previously used per-pass degradation model was extended to describe the experimental data for the pollutant used in this study and a generalised form is presented. The degradation performance was found to decrease with increase in the scale and then plateaus. Appropriate correlation was developed based on the experimental data. The developed approach and presented results provide a sound basis and a data set for further development of comprehensive multi-scale modelling of HC devices. Elsevier 2020-08-06 /pmc/articles/PMC7786610/ /pubmed/32791465 http://dx.doi.org/10.1016/j.ultsonch.2020.105295 Text en © 2020 Elsevier B.V. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Research Article
Ranade, Vivek V.
Prasad Sarvothaman, Varaha
Simpson, Alister
Nagarajan, Sanjay
Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water
title Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water
title_full Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water
title_fullStr Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water
title_full_unstemmed Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water
title_short Scale-up of vortex based hydrodynamic cavitation devices: A case of degradation of di-chloro aniline in water
title_sort scale-up of vortex based hydrodynamic cavitation devices: a case of degradation of di-chloro aniline in water
topic Original Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7786610/
https://www.ncbi.nlm.nih.gov/pubmed/32791465
http://dx.doi.org/10.1016/j.ultsonch.2020.105295
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