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HERO ID
3730448
Reference Type
Journal Article
Title
Adsorption of uranium from aqueous solution using biochar produced by hydrothermal carbonization
Author(s)
Zhang, Zhibin; Cao, XH; Liang, P; Liu, Yunhai
Year
2013
Is Peer Reviewed?
Yes
Journal
Journal of Radioanalytical and Nuclear Chemistry
ISSN:
0236-5731
EISSN:
1588-2780
Volume
295
Issue
2
Page Numbers
1201-1208
DOI
10.1007/s10967-012-2017-2
Web of Science Id
WOS:000313713300057
Abstract
The ability of biochar produced by hydrothermal carbonization (HTC) has been explored for the removal and recovery of uranium from aqueous solutions. The micro-morphology and structure of HTC were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The influences of different experimental parameters such as solution pH, initial concentration, contact time, ionic strength and temperature on adsorption were investigated. The HTC showed the highest uranium sorption capacity at initial pH of 6.0 and contact time of 50 min. Adsorption kinetics was better described by the pseudo-second-order model and adsorption process could be well defined by the Langmuir isotherm. The thermodynamic parameters, a-(3)GA degrees(298 K), a-(3)HA degrees and a-(3)SA degrees were determined to be -14.4, 36.1 kJ mol(-1) and 169.7 J mol(-1) K-1, respectively, which demonstrated the sorption process of HTC towards U(VI) was feasible, spontaneous and endothermic in nature. The adsorbed HTC could be effectively regenerated by 0.05 mol/L HCl solution for the removal and recovery of U(VI). Complete removal (99.9 %) of U(VI) from 1.0 L industry wastewater containing 15.0 mg U(VI) ions was possible with 2.0 g HTC.
Keywords
Biochar; Hydrothermal carbonization; Adsorption; Uranium
Tags
IRIS
•
Cobalt
LitSearch: January 2008 - August 2018
WoS
•
Uranium
Uranium Literature Search Update 3/2017
WOS
•
Uranium Toxicological Review
Date limited literature search 2011-2021
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Scopus
WOS
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