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Study on the relationship between the oxidation degree of GO and the adsorption capacity for Pb2+

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Field Value
 
Title Study on the relationship between the oxidation degree of GO and the adsorption capacity for Pb2+
 
Creator Xiao, Liu
Zihang, Zhou
Qi, Lisi
Yan, Liu
 
Subject Adsorption
Graphite oxide
Oxidation degree
Pb2+
 
Description 461-469
In this study, four kinds of graphite oxide (GO) with different oxidation degree have been prepared by a modified Hummers method, by changing the amount of oxidation agent KMnO4. To investigate the relationship between the oxidation degree of GO and the adsorption capacity for heavy metal irons, Pb2+ solution has been selected as a model waste water. The effects of initial Pb2+ concentration, solution pH and contact time on the adsorption capacity of series GO have been studied. It is found that the adsorption capacity does not always increase with the increasing of oxidation degree. The adsorption process of series GO for Pb2+ are well described by the Langmuir isotherm model, which reveales that the adsorption process is homogeneous monolayer coverage.
 
Date 2021-02-02T07:25:23Z
2021-02-02T07:25:23Z
2020-11
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/56079
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJCT Vol.27(6) [November 2020]