Hydrothermal fabrication of amino functionalized lotus seedpods-derived biochar for efficient removal of uranium (VI)

被引：10
|
作者：
Lv, Jianqi [1 ]
Xia, Hongtao [1 ]
Ren, Qi [1 ]
Wang, Yang [1 ]
Liu, Yuting [1 ]
Feng, Zihao [1 ]
Li, Yang [1 ]
Du, Yanjun [1 ]
Wang, Yun [1 ]
机构：
[1] East China Univ Technol, Sch Nucl Sci & Engn, Nanchang 330013, Jiangxi, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2023年 / 332卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Uranium (VI); Adsorption; Biochar; Lotus seedpods; Amino group; AQUEOUS-SOLUTION; ADSORPTION; ADSORBENT; IONS; BIOSORPTION; COMPOSITE; KINETICS; BIOMASS;
D O I：
10.1007/s10967-023-09094-x
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this work, amino functionalized lotus seedpods-derived biochar (LSBC-NH2) was prepared for the removal of uranium (VI) from aqueous solution by using natural lotus seedpods as raw material and urea as nitrogen source through hydrothermal method. LSBC-NH2 showed a very thin sheet structure with rough porous surface and cluster structure and good thermal stability. Kinetics, isotherms and thermodynamics studies demonstrated that the adsorption of uranium (VI) by LSBC-NH2 was a spontaneous, endothermic, and single-layer chemisorption process, and the maximum uranium (VI) adsorption capacity on LSBC-NH2 could reach 367.99 mg g(-1). Adsorption mechanism showed that the adsorption process of LSBC-NH2 for uranium (VI)was involved in amino, carboxyl and hydroxyl groups in LSBC-NH2.
引用
收藏
页码：4075 / 4087
页数：13
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