Removing uranium (VI) from aqueous solution with insoluble humic acid derived from leonardite
Meng, Fande1,2,3; Yuan, Guodong4; Larson, Steven L.5; Ballard, John H.5; Waggoner, Charles A.6; Arslan, Zikri1; Han, Fengxiang X.1
2017-12-01
发表期刊JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
ISSN0265-931X
卷号180页码:1-8
摘要The occurrence of uranium (U) and depleted uranium (DU)-contaminated wastes from anthropogenic activities is an important environmental problem. Insoluble humic acid derived from leonardite (L-HA) was investigated as a potential adsorbent for immobilizing U in the environment. The effect of initial pH, contact time, U concentration, and temperature on U(VI) adsorption onto L-HA was assessed. The U(VI) adsorption was pH-dependent and achieved equilibrium in 2 h. It could be well described with pseudo second-order model, indicating that U(VI) adsorption onto L-HA involved chemisorption. The U(VI) adsorption mass increased with increasing temperature with maximum adsorption capacities of 91, 112 and 120 mg g(-1) at 298, 308 and 318 K, respectively. The adsorption reaction was spontaneous and endothermic. We explored the processes of U(VI) desorption from the L-HA-U complex through batch desorption experiments in 1 mM NaNO3 and in artificial seawater. The desorption process could be well described by pseudo-first-order model and reached equilibrium in 3 h. L-HA possessed a high propensity to adsorb U(VI). Once adsorbed, the release of U(VI) from L-HA-U complex was minimal in both 1 mM NaNO3 and artificial seawater (0.06% and 0.40%, respectively). Being abundant, inexpensive, and safe, L-HA has good potential for use as a U adsorbent from aqueous solution or immobilizing U in soils. (C) 2017 Elsevier Ltd. All rights reserved.
关键词Uranium Contamination Depleted Uranium Leonardite Humic Acid Artificial Seawater Desorption Soil
DOI10.1016/j.jenvrad.2017.09.019
项目资助者U.S. Army Environmental Quality Technology (EQT) Program ; U.S. Army Engineer Research and Development Center(W912HZ-16-2-0021) ; U.S. Nuclear Regulatory Commission(NRC-HQ-84-15-G-0042, NRC-HQ-12-G-38-0038) ; U.S. Department of Commerce(NA11SEC4810001-003499) ; Chinese National Key Research and Development Program(2016YFD0200303-4) ; Key Research and Development Program of Shandong Province(2016CYJS05A01-1)
收录类别SCI
关键词[WOS]DEPLETED URANIUM ; ACTIVATED CARBON ; ADSORPTION ; SORPTION ; TEMPERATURE ; GROUNDWATER ; KINETICS ; SOILS ; IONS ; MINE
文章类型Article
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:000416195000001
出版者ELSEVIER SCI LTD
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/24042
专题中科院海岸带环境过程与生态修复重点实验室
通讯作者Han, Fengxiang X.
作者单位1.Jackson State Univ, Dept Chem & Biochem, 1400 JR Lynch St,POB 17910, Jackson, MS 39217 USA
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Prov Key Lab Coastal Environm Proc,YICCA, Yantai 264003, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Zhaoqing Univ, Zhaoqing 526061, Guangdong, Peoples R China
5.US Army, Engineer Res & Dev Ctr, 3909 Halls Ferry Rd, Vicksburg, MS 39180 USA
6.Mississippi State Univ, Inst Clean Energy Technol, 205 Res Blvd, Starkville, MS 39759 USA
第一作者单位中国科学院烟台海岸带研究所
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Meng, Fande,Yuan, Guodong,Larson, Steven L.,et al. Removing uranium (VI) from aqueous solution with insoluble humic acid derived from leonardite[J]. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,2017,180:1-8.
APA Meng, Fande.,Yuan, Guodong.,Larson, Steven L..,Ballard, John H..,Waggoner, Charles A..,...&Han, Fengxiang X..(2017).Removing uranium (VI) from aqueous solution with insoluble humic acid derived from leonardite.JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,180,1-8.
MLA Meng, Fande,et al."Removing uranium (VI) from aqueous solution with insoluble humic acid derived from leonardite".JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 180(2017):1-8.
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