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Biosorptive removal of uranium(VI) from aqueous solution by Myriophyllum spicatum

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成果类型:
期刊论文
作者:
Yi, Zheng-ji;Yao, Jun*;Zhu, Mi-jia;Chen, Hui-lun;Wang, Fei;Liu, Xing
通讯作者:
Yao, Jun
作者机构:
[Liu, Xing; Yi, Zheng-ji] Hengyang Normal Univ, Dept Chem & Mat Sci, Coll Hunan Prov, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.
[Liu, Xing; Yi, Zheng-ji] Hengyang Normal Univ, Dept Chem & Mat Sci, Coll Hunan Prov, Key Lab Funct Organometall Mat, Hengyang 421008, Peoples R China.
[Yao, Jun; Wang, Fei; Yi, Zheng-ji; Zhu, Mi-jia; Chen, Hui-lun] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China.
[Yao, Jun; Wang, Fei; Yi, Zheng-ji; Zhu, Mi-jia; Chen, Hui-lun] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Beijing 100083, Peoples R China.
通讯机构:
[Yao, Jun] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China.
[Yao, Jun] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Beijing 100083, Peoples R China.
语种:
英文
关键词:
Uranium;Biosorption;Myriophyllum spicatum;Isotherm;Kinetics
期刊:
DESALINATION AND WATER TREATMENT
ISSN:
1944-3994
年:
2018
卷:
105
页码:
273-281
文献类别:
WOS:Article
所属学科:
WOS学科类别:Engineering, Chemical;Water Resources
入藏号:
基金类别:
National Natural Science Foundation of China [41773133, 21603065, 41273131]; National Science Foundation of China [41430106, 41720104007]; Aid programs for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province; Key Discipline of Hunan Province
机构署名:
本校为第一机构
院系归属:
化学与材料科学学院
摘要:
Batch tests were performed to study the U(VI) biosorption process by the nonliving biomass of the aquatic macrophyte Myriophyllum spicatum. Effects of various operational parameters, such as contact time, pH, initial U(VI) concentration, and temperature, were investigated in detail. Results suggested that the U(VI) adsorption capacity increased with increasing initial pH from 1.0 to 7.0, and the best pH was found to be 5.0. Kinetic investigations suggested that adsorption equilibrium can be reached within 80 min and pseudo-second-order kinetic model best characterizes the biosorption behavior. The adsorption thoroughly agreed with the Langmuir isotherm and the maximum adsorption capacity was calculated to be 136.61 mg/g. Changes in free energy and enthalpy derived from the adsorption data revealed that the biosorption of U(VI) onto M. spicatum was spontaneous (Delta G(0) < 0), endothermic (Delta H-0 > 0), and thermodynamically favorable. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analysis indicated that hydroxyl and amino groups on the algal surface could contribute to the U(VI) biosorption process, in which complexation and ion exchange mechanisms might be involved. In conclusion, M. spicatum biomass could be used as a promising biosorbent to remove U(VI) contamination efficiently with high adsorption capacity and fast adsorption rate.
参考文献:
Ai L, 2013, J RADIOANAL NUCL CH, V298, P1823, DOI 10.1007/s10967-013-2613-9
Akhtar K, 2009, BIORESOURCE TECHNOL, V100, P4551, DOI 10.1016/j.biortech.2009.03.073
Aly Z, 2013, J RADIOANAL NUCL CH, V295, P889, DOI 10.1007/s10967-012-1851-6
Anirudhan TS, 2015, J ENVIRON CHEM ENG, V3, P1267, DOI 10.1016/j.jece.2014.10.006
Aretz K., 2008, COMP ELIMINATION CAP, P711

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