X-ray absorption fine structure study of enhanced sequestration of U(VI) and Se(IV) by montmorillonite decorated with zero-valent iron nanoparticles

被引:102
作者
Hu, Baowei [1 ]
Ye, Feng [1 ]
Ren, Xuemei [4 ]
Zhao, Donglin [4 ,5 ]
Sheng, Guodong [1 ,2 ]
Li, Hui [1 ]
Ma, Jingyuan [3 ]
Wang, Xiangke [1 ,2 ,6 ]
Huang, Yuying [3 ]
机构
[1] Shaoxing Univ, Coll Chem & Chem Engn, Coll Life Sci, Coll Med Sci, Shaoxing 312000, Zhejiang, Peoples R China
[2] North China Elect Power Univ, Sch Chem & Environm, Beijing 102206, Peoples R China
[3] Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, Shanghai 201204, Peoples R China
[4] Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Peoples R China
[5] Anhui Univ Architecture, Sch Mat & Chem Engn, Hefei 230601, Peoples R China
[6] King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia
基金
中国国家自然科学基金;
关键词
NANOSCALE ZEROVALENT IRON; LAYERED DOUBLE HYDROXIDE; IN-SITU REMEDIATION; AQUEOUS-SOLUTION; CARBON NANOTUBES; URANIUM REMOVAL; CR(VI) REMOVAL; SELENATE REMOVAL; METHYLENE-BLUE; MODEL-COMPOUND;
D O I
10.1039/c6en00421k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Herein, using Na-montmorillonite and Al-montmorillonite as templates, supported NZVI with superior reactivity, namely NZVI/Na-Mont and NZVI/Al-Mont, was synthesized and applied for enhanced sequestration of U(VI) and Se(IV). The results indicated that the negatively charged Na-Mont can effectively adsorb cationic U(VI), while the positively charged Al-Mont can adsorb anionic Se(IV), significantly enhancing the rate and extent of U(VI) and Se(IV) sequestration on NZVI due to the synergistic effect between adsorption and reduction. The inhibition effect of 1,10-phenanthroline demonstrated that surface-adsorbed Fe(II) on corrosion products and clay surfaces played an indispensable role in U(VI) and Se(IV) reduction, which was further confirmed by XPS identification. XANES analysis demonstrated that in the NZVI system, Na-Mont and Al-Mont promote the reductive transformation of U(VI) into U(IV), and Se(IV) into Se(0)/Se(-II), respectively. EXAFS analysis indicated the presence of Al/Si scattering for U(VI)-treated NZVI/Na-Mont and Se(IV)-treated NZVI/Al-Mont samples, revealing that Na-Mont and Al-Mont reacted as a scavenger for insoluble products like UO2 and FeSe, thereby, more reactive sites can be used for U(VI) and Se(IV) reduction. Our results suggested that the distinct structure of modified montmorillonite can be utilized for synthesizing supported NZVI to create properties compatible for enhanced enrichment of radionuclides, displaying potential application in nuclear waste management.
引用
收藏
页码:1460 / 1472
页数:13
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[1]   Nanoscale zero valent supported by Zeolite and Montmorillonite: Template effect of the removal of lead ion from an aqueous solution [J].
Arancibia-Miranda, Nicolas ;
Baltazar, Samuel E. ;
Garcia, Alejandra ;
Munoz-Lira, Daniela ;
Sepulveda, Pamela ;
Rubio, Maria A. ;
Altbir, Dora .
JOURNAL OF HAZARDOUS MATERIALS, 2016, 301 :371-380
[2]   Montmorillonite-supported nanoscale zero-valent iron for removal of arsenic from aqueous solution: Kinetics and mechanism [J].
Bhowmick, Subhamoy ;
Chakraborty, Sudipta ;
Mondal, Priyanka ;
Van Renterghem, Wouter ;
Van den Berghe, Sven ;
Roman-Ross, Gabriela ;
Chatterjee, Debashis ;
Iglesias, Monica .
CHEMICAL ENGINEERING JOURNAL, 2014, 243 :14-23
[3]   Uptake of Uranium(VI) by Pyrite under Boom Clay Conditions: Influence of Dissolved Organic Carbon [J].
Bruggeman, C. ;
Maes, N. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (11) :4210-4216
[4]   ZERO-VALENT IRON FOR THE IN-SITU REMEDIATION OF SELECTED METALS IN GROUNDWATER [J].
CANTRELL, KJ ;
KAPLAN, DI ;
WIETSMA, TW .
JOURNAL OF HAZARDOUS MATERIALS, 1995, 42 (02) :201-212
[5]   U(VI) Sorption and Reduction by Fe(II) Sorbed on Montmorillonite [J].
Chakraborty, Sudipta ;
Favre, Fabienne ;
Banerjee, Dipanjan ;
Scheinost, Andreas C. ;
Mullet, Martine ;
Ehrhardt, Jean-Jacques ;
Brendle, Jocelyne ;
Vidal, Loic ;
Charlet, Laurent .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (10) :3779-3785
[6]   Reactivities of Fe(II) on Calcite: Selenium Reduction [J].
Chakrabrty, Sudipta ;
Bardelli, Fabrizio ;
Charlet, Laurent .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (04) :1288-1294
[7]   Electron transfer at the mineral/water interface:: Selenium reduction by ferrous iron sorbed on clay [J].
Charlet, L. ;
Scheinost, A. C. ;
Tournassat, C. ;
Greneche, J. M. ;
Gehin, A. ;
Fernandez-Martinez, A. ;
Coudert, S. ;
Tisserand, D. ;
Brendle, J. .
GEOCHIMICA ET COSMOCHIMICA ACTA, 2007, 71 (23) :5731-5749
[8]   Nanocomposite Pyrite-Greigite Reactivity toward Se(IV)/Se(VI) [J].
Charlet, Laurent ;
Kang, Mingliang ;
Bardelli, Fabrizio ;
Kirsch, Regina ;
Gehin, Antoine ;
Greneche, Jean-Marc ;
Chen, Fanrong .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2012, 46 (09) :4869-4876
[9]   Adsorption-Induced Crystallization of U-Rich Nanocrystals on Nano-Mg(OH)2 and the Aqueous Uranyl Enrichment [J].
Chen, Zhi ;
Zhuang, Zanyong ;
Cao, Qing ;
Pan, Xiaohong ;
Guan, Xiong ;
Lin, Zhang .
ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (02) :1301-1305
[10]   Magnetite and zero-valent iron nanoparticles for the remediation of uranium contaminated environmental water [J].
Crane, R. A. ;
Dickinson, M. ;
Popescu, I. C. ;
Scott, T. B. .
WATER RESEARCH, 2011, 45 (09) :2931-2942