Design and synthesis of amine functionalized graphene oxide for enhanced fluoride removal

被引：41
|
作者：
Jeyaseelan, Antonysamy [1 ]
Ghfar, Ayman A. [2 ]
Naushad, Mu [2 ,3 ,4 ]
Viswanathan, Natrayasamy [1 ]
机构：
[1] Anna Univ, Univ Coll Engn Dindigul, Dept Chem, Dindigul 624622, Tamil Nadu, India
[2] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia
[3] Yonsei Univ, Yonsei Frontier Lab, Seoul, South Korea
[4] Shoolini Univ, Int Res Ctr Nanotechnol Himalayan Sustainabil IRC, Solan 173212, Himachal Prades, India
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2021年 / 9卷 / 04期
关键词：
Graphene oxide; Aminated graphene oxide; Defluoridation; Reuse; Field trail; METAL-ORGANIC FRAMEWORKS; EFFICIENT REMOVAL; WASTE-WATER; AQUEOUS-SOLUTION; DRINKING-WATER; ADSORPTION; CARBON; FABRICATION; COMPOSITE; SORPTION;
D O I：
10.1016/j.jece.2021.105384
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Graphene oxide (GO) possesses appreciable defluoridation capacity (DC) of 2451 mgF- kg (-1). To enhance the DC and its properties, amine functionalized graphene oxide (AGO) was developed for fluoride removal. In addition, the prepared AGO have the vital DC of 4001 mgF-kg (-1). The sophisticated instrumentations techniques namely SEM, TGA, FTIR, XRD, XPS and Raman analysis were explored for AGO and individual materials. The optimization of the responsible parameters (shaking time, solution pH, AGO dosage, interfering anions, temperature and initial fluoride ion concentration) for fluoride adsorption was employed under batch conditions. The influence of adsorption isotherms (Freundlich, Dubinin-Radushkevich (D-R) and Langmuir), kinetics (particle/ intraparticle diffusion and pseudo-first/second-order models) and thermodynamic studies (Delta H degrees, Delta S degrees and Delta G degrees) of AGO was investigated. The fluoride removal mechanism of AGO was found to be electrostatic attraction. The reusability and field study of AGO was also scrutinized.
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页数：12
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