Characteristic Aspects of Uranium(VI) Adsorption Utilizing Nano-Silica/Chitosan from Wastewater Solution

被引：36

作者：

Sakr, Ahmed K. ^{[1
]}

Aal, Mostafa M. Abdel ^{[2
]}

Abd El-Rahem, Khaled A. ^{[3
]}

Allam, Eman M. ^{[2
]}

Dayem, Samia M. Abdel ^{[2
]}

Elshehy, Emad A. ^{[2
]}

Hanfi, Mohamed Y. ^{[2
,4
]}

Alqahtani, Mohammed S. ^{[5
,6
]}

Cheira, Mohamed F. ^{[1
]}

机构：

[1] Wayne State Univ, Dept Civil & Environm Engn, 5050 Anthony Wayne Dr, Detroit, MI 48202 USA

[2] Nucl Mat Author, Cairo 11381, Egypt

[3] Al Azhar Univ, Fac Sci, Dept Chem, Cairo 11651, Egypt

[4] Ural Fed Univ, Inst Phys & Technol, St Mira 19, Ekaterinburg 620002, Russia

[5] King Khalid Univ, Coll Appl Med Sci, Dept Radiol Sci, Abha 61421, Saudi Arabia

[6] Univ Leicester, Space Res Ctr, BioImaging Unit, Michael Atiyah Bldg, Leicester LE1 7RH, Leics, England

来源：

NANOMATERIALS | 2022年 / 12卷 / 21期

关键词：

chitosan; silicon dioxide; sorption; uranium; kinetics; MODIFIED MESOPOROUS SILICA; HEAVY-METAL IONS; AQUEOUS-SOLUTION; CHITOSAN; EXTRACTION; REMOVAL; SURFACE; U(VI); AREA;

D O I：

10.3390/nano12213866

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new nano-silica/chitosan (SiO2/CS) sorbent was created using a wet process to eliminate uranium(VI) from its solution. Measurements using BET, XRD, EDX, SEM, and FTIR were utilized to analyze the production of SiO2/CS. The adsorption progressions were carried out by pH, SiO2/CS dose, temperature, sorbing time, and U(VI) concentration measurements. The optimal condition for U(VI) sorption (165 mg/g) was found to be pH 3.5, 60 mg SiO2/CS, for 50 min of sorbing time, and 200 mg/L U(VI). Both the second-order sorption kinetics and Langmuir adsorption model were observed to be obeyed by the ability of SiO2/CS to eradicate U(VI). Thermodynamically, the sorption strategy was a spontaneous reaction and exothermic. According to the findings, SiO2/CS had the potential to serve as an effectual sorbent for U(VI) displacement.

引用

页数：21

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