Ultrasound assisted preparation of calcium alginate beads to improve absorption of Pb+2 from water

Claudia Maria Simonescu; Timothy J. Mason; Ioan Călinescu; Vasile Lavric; Mircea Vînătoru; Alina Melinescu; Daniela Cristina Culiţă

doi:10.1016/j.ultsonch.2020.105191

Ultrasound assisted preparation of calcium alginate beads to improve absorption of Pb⁺² from water

Claudia Maria Simonescu, Timothy J. Mason, Ioan Călinescu, Vasile Lavric, Mircea Vînătoru, Alina Melinescu, Daniela Cristina Culiţă

College of Engineering, Environment & Science

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Calcium alginate (CaAlg) beads were prepared using ultrasound for use in the removal of lead from natural and wastewaters by ion exchange. Ultrasound was applied in a batch mode with an ultrasonic bath or in a flow mode using an ultrasonic clamp-on device. For comparison purposes the synthesis was performed in batch mode in the absence of the ultrasound. The beads prepared using ultrasound showed a greater ion exchange capability which could be ascribed to a larger specific surface area as a result of surface roughening induced by cavitation. Scanning Electron Microscopy (SEM) images revealed that the roughening was in the form of corrugation for the product with the best ion exchange capability obtained in the flow process where preformed CaAlg droplets were subjected to ultrasound during the setting process. These beads performed 11% better for lead removal than those synthesized in the absence of ultrasound.

Original language	English
Article number	105191
Number of pages	8
Journal	Ultrasonics Sonochemistry
Volume	68
Early online date	28 May 2020
DOIs	https://doi.org/10.1016/j.ultsonch.2020.105191
Publication status	Published - Nov 2020

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Funder

The SEM images obtained on the samples were possible due to EU-funding project POSCCE-A2-O2.2.1-2013-1/Prioritary Axe 2, Project No. 638/12.03.2014, ID 1970, SMIS-CSNR code 48652.
The experiments performed on the flow MMM-clamp-on system were possible due to European Regional Development Fund through Competitiveness Operational Program 2014-2020, Priority axis 1, Project No. P_36_611, MySMIS ID 107066, Innovative Technologies for Materials Quality Assurance in Health, Energy and Environmental - Center for Innovative Manufacturing Solutions of Smart Biomaterials and Biomedical Surfaces – INOVABIOMED

Funding

The SEM images obtained on the samples were possible due to EU-funding project POSCCE-A2-O2.2.1-2013-1/Prioritary Axe 2, Project No. 638/12.03.2014, ID 1970, SMIS-CSNR code 48652. The experiments performed on the flow MMM-clamp-on system were possible due to European Regional Development Fund through Competitiveness Operational Program 2014-2020, Priority axis 1, Project No. P_36_611, MySMIS ID 107066, Innovative Technologies for Materials Quality Assurance in Health, Energy and Environmental - Center for Innovative Manufacturing Solutions of Smart Biomaterials and Biomedical Surfaces – INOVABIOMED

Keywords

Calcium alginate beads
Clamp-on
Ion exchange
Lead removal
Ultrasonic assisted synthesis

ASJC Scopus subject areas

Environmental Chemistry
Chemical Engineering (miscellaneous)
Radiology Nuclear Medicine and imaging
Acoustics and Ultrasonics
Organic Chemistry
Inorganic Chemistry

Access to Document

10.1016/j.ultsonch.2020.105191Licence: CC BY-NC-ND

Cite this

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title = "Ultrasound assisted preparation of calcium alginate beads to improve absorption of Pb+2 from water",

abstract = "Calcium alginate (CaAlg) beads were prepared using ultrasound for use in the removal of lead from natural and wastewaters by ion exchange. Ultrasound was applied in a batch mode with an ultrasonic bath or in a flow mode using an ultrasonic clamp-on device. For comparison purposes the synthesis was performed in batch mode in the absence of the ultrasound. The beads prepared using ultrasound showed a greater ion exchange capability which could be ascribed to a larger specific surface area as a result of surface roughening induced by cavitation. Scanning Electron Microscopy (SEM) images revealed that the roughening was in the form of corrugation for the product with the best ion exchange capability obtained in the flow process where preformed CaAlg droplets were subjected to ultrasound during the setting process. These beads performed 11\% better for lead removal than those synthesized in the absence of ultrasound.",

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author = "Simonescu, \{Claudia Maria\} and Mason, \{Timothy J.\} and Ioan C{\u a}linescu and Vasile Lavric and Mircea V{\^i}n{\u a}toru and Alina Melinescu and Culi{\c t}{\u a}, \{Daniela Cristina\}",

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doi = "10.1016/j.ultsonch.2020.105191",

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AU - Simonescu, Claudia Maria

AU - Mason, Timothy J.

AU - Călinescu, Ioan

AU - Lavric, Vasile

AU - Vînătoru, Mircea

AU - Melinescu, Alina

AU - Culiţă, Daniela Cristina

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KW - Calcium alginate beads

KW - Clamp-on

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KW - Lead removal

KW - Ultrasonic assisted synthesis

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