Preparation and Characterization of High-Efficiency Magnetic Heavy Metal Capture Flocculants

In this study, a high-efficiency magnetic heavy metal flocculant MF@AA was prepared based on carboxymethyl chitosan and magnetic Fe3O4. It was characterized by SEM, FTIR, XPS, XRD and VSM, and the Cu(II) removal rate was used as the evaluation basis for the preparation process. The effects of AMPS c...

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Bibliographic Details
Published in:Water (Basel) 2021-07, Vol.13 (13), p.1732
Main Authors: Yu, Yuanyuan, Sun, Yongjun, Zhou, Jun, Chen, Aowen, Shah, Kinjal J.
Format: Article
Language:English
Subjects:
Chitosan
Copper
Efficiency
Experiments
Flocculants
Flocculation
Heavy metals
Information industry
Iron oxides
Magnetic fields
Magnetic induction
Molecular weight
Morphology
Nitrogen
Optimization
Photoinitiators
Pollution
Polymers
Reaction time
Response surface methodology
Wastewater
Water treatment
X ray photoelectron spectroscopy
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Summary:In this study, a high-efficiency magnetic heavy metal flocculant MF@AA was prepared based on carboxymethyl chitosan and magnetic Fe3O4. It was characterized by SEM, FTIR, XPS, XRD and VSM, and the Cu(II) removal rate was used as the evaluation basis for the preparation process. The effects of AMPS content, total monomer concentration, photoinitiator concentration and reaction time on the performance of MF@AA flocculation to remove Cu(II) were studied. The characterization results show that MF@AA has been successfully prepared and exhibits good magnetic induction characteristics. The synthesis results show that under the conditions of 10% AMPS content, 35% total monomer concentration, 0.04% photoinitiator concentration, and 1.5 h reaction time, the best yield of MF@AA is 77.69%. The best removal rate is 87.65%. In addition, the response surface optimization of the synthesis process of MF@AA was performed. The optimal synthesis ratio was finally determined as iron content 6.5%, CMFS: 29.5%, AM: 53.9%, AMPS: 10.1%. High-efficiency magnetic heavy metal flocculant MF@AA shows excellent flocculation performance in removing Cu(II). This research provides guidance and ideas for the development of efficient and low-cost flocculation technology to remove Cu(II) in wastewater.
ISSN:2073-4441
2073-4441
DOI:10.3390/w13131732