Hussain, ST, Peakall, J orcid.org/0000-0003-3382-4578, Barnes, M et al. (1 more author) (2021) Characterizing Flocculated Suspensions with an Ultrasonic Velocity Profiler in Backscatter Mode. In: 2021 IEEE International Ultrasonics Symposium (IUS). 2021 IEEE International Ultrasonics Symposium (IUS), 11-16 Sep 2021, Xi'an, China. IEEE ISBN 978-1-6654-4777-5
Abstract
This paper reports on use of a commercial ultrasonic velocity profiler (UVP) to monitor changes in concentration within complex suspensions. A calcium carbonate (CaCO 3 ) nuclear waste simulant was used with a high molecular weight anionic polymer flocculant to produce varying suspension environments. 2 MHz ultrasonic transducers were used in both in situ and ‘remote’ configurations to extract backscatter voltage profiles of the suspensions, where the remote probes highlighted the ability of the UVP to analyze through pipe walls. Calibration was achieved by measuring logarithmic function of the backscatter voltage (G-function). Here, profile gradients averaged over selected distances and concentrations are used to measure particle attenuation coefficients. Both in situ and remote probes gave comparable results, where addition of polymer flocculant led to a decrease in the relative attenuation, due to lower viscous absorption with particle aggregates. Flocculated aggregates largely followed estimation from spherical scattering theory if aggregate density is taken account of. Attenuation constants can be used to determine single and dual inversions to measure concentration profiles in nuclear wastes.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
Keywords: | UVP; Attenuation coefficients; Calcium carbonate; Flocculation; Nuclear waste |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Nov 2021 15:40 |
Last Modified: | 11 Oct 2023 15:19 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/IUS52206.2021.9593613 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:180110 |