Mechanism study about the adsorption of Pb(II) and Cd(II) with iron-trimesic metal-organic frameworks

被引:135
作者
Zhang, Bao-Lin [1 ]
Qiu, Wei [1 ]
Wang, Pan-Pan [1 ]
Liu, Yu-Lei [2 ]
Zou, Jing [3 ]
Wang, Lu [1 ]
Ma, Jun [1 ]
机构
[1] Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resources & Environm, Harbin, Peoples R China
[2] Dongguan Univ Technol, Sch Environm & Civil Engn, Dongguan 523808, Peoples R China
[3] Huaqiao Univ, Coll Civil Engn, Inst Municipal & Environm Engn, Xiamen 361021, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
Metal-organic frameworks; Heavy metal removal; Water treatment; Adsorption; Fixed-bed adsorption; OUTER-SPHERE COMPLEXATION; HIGHLY EFFICIENT REMOVAL; HEAVY-METALS; SELECTIVE REMOVAL; AQUEOUS-SOLUTIONS; WATER; MIL-100(FE); CADMIUM; NANOCOMPOSITE; DEGRADATION;
D O I
10.1016/j.cej.2019.123507
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study examined the effects of two kinds of iron-trimesic metal-organic frameworks (MOFs) MIL-100(Fe) and Fe-BTC] on adsorption of Pb(II) and Cd(II). For both materials, adsorption of Pb and Cd nearly approached equilibriums in the initial 2 min with high pseudo-second-order kinetics rate constants (0.895 g.mg(-1).min(-1) for Pb and 1.416 g.mg(-1).min(-1) for Cd). Both materials showed better adsorption performance with the increase of solution pH (from 2 to 7). Adsorption processes were endothermic, entropy-increased and spontaneous. The higher enthalpy change (Delta H-0) and entropy change (Delta S-0) values for Cd adsorption reflected the more difficult adsorption of Cd compared with Pb, which is related with more negative hydration enthalpy (Delta H-hyd(Theta)) and larger ionic radius of Cd. Multilayer adsorption phenomena appeared with no maximum adsorptive capacity observed. Both Langmuir-Freundlich and Freundlich-BET models could well describe isotherms. Multilayer adsorption may be attributed to the formation of inner-sphere complexation and outer-sphere complexation. BockrisDevanathan-Muller (BDM) electrical double layer theory was used for illustrating adsorption mechanism. The fixed-bed adsorption experiments with Fe-BTC showed outstanding elimination performance in initial operating period ( > 99.8% for Pb and > 99.6% for Cd), with effective filtration volume of 980 mL for Pb and 300 mL for Cd. Recyclability test showed that Fe-BTC could be well regenerated by ethylenediamine tetraacetic acid disodium salt (EDTA-2Na). This study showed that MIL-100(Fe) and Fe-BTC are potential for practical heavy metal removal applications.
引用
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页数:13
相关论文
共 70 条
[1]  
[Anonymous], 1995, Fundamentals of Interface and Colloid Science: Solid-Liquid Interfaces
[2]  
[Anonymous], 2001, MERCURY CADMIUM LEAD
[3]   Introduction of amino groups into acid-resistant MOFs for enhanced U(VI) sorption [J].
Bai, Zhi-Qiang ;
Yuan, Li-Yong ;
Zhu, Lin ;
Liu, Zhi-Rong ;
Chu, Sheng-Qi ;
Zheng, Li-Rong ;
Zhang, Jing ;
Chai, Zhi-Fang ;
Shi, Wei-Qun .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (02) :525-534
[4]   Degradation of fluoride-free MIL-100(Fe) and MIL-53(Fe) in water: Effect of temperature and pH [J].
Bezverkhyy, Igor ;
Weber, Guy ;
Bellat, Jean-Pierre .
MICROPOROUS AND MESOPOROUS MATERIALS, 2016, 219 :117-124
[5]   ON STRUCTURE OF CHARGED INTERFACES [J].
BOCKRIS, JO ;
DEVANATHAN, MAV ;
MULLER, K .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1963, 274 (1356) :55-+
[6]   Adsorption of gases in multimolecular layers [J].
Brunauer, S ;
Emmett, PH ;
Teller, E .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319
[7]   Stable polyoxometalate insertion within the mesoporous metal organic framework MIL-100(Fe) [J].
Canioni, Romain ;
Roch-Marchal, Catherine ;
Secheresse, Francis ;
Horcajada, Patricia ;
Serre, Christian ;
Hardi-Dan, Menaschi ;
Ferey, Gerard ;
Greneche, Jean-Marc ;
Lefebvre, Frederic ;
Chang, Jong-San ;
Hwang, Young-Kyu ;
Lebedev, Oleg ;
Turner, Stuart ;
Van Tendeloo, Gustaaf .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (04) :1226-1233
[8]   Ion exchange induced removal of Pb(II) by MOF-derived magnetic inorganic sorbents [J].
Chen, Dezhi ;
Shen, Weisong ;
Wu, Shaolin ;
Chen, Caiqin ;
Luo, Xubiao ;
Guo, Lin .
NANOSCALE, 2016, 8 (13) :7172-7179
[9]   Recent advances in nanomaterials for water protection and monitoring [J].
Das, Rasel ;
Vecitis, Chad D. ;
Schulze, Agnes ;
Cao, Bin ;
Ismail, Ahmad Fauzi ;
Lu, Xianbo ;
Chen, Jiping ;
Ramakrishna, Seeram .
CHEMICAL SOCIETY REVIEWS, 2017, 46 (22) :6946-7020
[10]   Microwave Assisted Preparation of Thio-Functionalized Polyacrylonitrile Fiber for the Selective and Enhanced Adsorption of Mercury and Cadmium from Water [J].
Deng, Sheng ;
Zhang, Guangshan ;
Liang, Shuang ;
Wang, Peng .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2017, 5 (07) :6054-6063