YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室
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
AbstractThe 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.
KeywordUranium Contamination Depleted Uranium Leonardite Humic Acid Artificial Seawater Desorption Soil
Funding OrganizationU.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)
Indexed BySCI
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000416195000001
Citation statistics
Document Type期刊论文
Corresponding AuthorHan, Fengxiang X.
Affiliation1.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
First Author AffilicationYantai Institute of Coastal Zone Research, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Meng, Fande]'s Articles
[Yuan, Guodong]'s Articles
[Larson, Steven L.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Meng, Fande]'s Articles
[Yuan, Guodong]'s Articles
[Larson, Steven L.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Meng, Fande]'s Articles
[Yuan, Guodong]'s Articles
[Larson, Steven L.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.