ORIGINAL RESEARCH
Cr (VI) Removal from Aqueous Solution Using Starch and Sodium Carboxymethyl Cellulose-Coated Fe and Fe /Ni Nanoparticles
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Bin Ji 1,2,3
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1
School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China
 
2
Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, China
 
3
Hubei Key Laboratory of Regional Development and Environmental Response, Hubei University, Wuhan, 430062, China
 
 
Submission date: 2017-11-27
 
 
Final revision date: 2018-01-08
 
 
Acceptance date: 2018-01-23
 
 
Online publication date: 2018-06-29
 
 
Publication date: 2018-07-09
 
 
Corresponding author
Bin Ji   

Wuhan University of Sicence and Technology, Wuhan University of Sicence and Technology, 430065 Wuhan, China
 
 
Pol. J. Environ. Stud. 2018;27(6):2785-2792
 
KEYWORDS
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ABSTRACT
Starch and sodium carboxymethyl cellulose-coated Fe and Fe /Ni nanoparticles were synthesized and their Cr (VI) removal capabilities were evaluated and compared. We found that starch and sodium carboxymethyl cellulose-coated nanoscale zero-valent iron-nickel (SS-nZVI-Ni) showed the better Cr (VI) removal performance. The effect of acidic conditions on Cr(VI) removal by SS-Nzvi-Ni revealed that the Cr (VI) removal efficiency by SS-nZVI-Ni reached the maximum of 95.70% at pH = 2. The effect of different initial Cr (VI) concentrations showed that SS-nZVI-Ni performed well at a high Cr(VI) concentration. Langmuir-Hinshelwood first-order kinetic model could describe the reduction process well. SEM images revealed that SS-nZVI-Ni had a large surface area, which discarded the problem of aggregation. XRD and XPS analysis of SS-nZVI-Ni showed that SS-nZVI-Ni and Cr (III) formed an alloy on the surface of SS-nZVI-Ni after the reaction. The study provides an option for practical application of SS-nZVI-Ni in Cr (VI) removal.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
 
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