JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2018
·Vol. 318
·期 2
·1219-1227
·
IF 1.181
Liu Zhirong,Liu Daqian,Cai Zhiwang,Wang Yun,Zhou Liming
A new type chelating resin grafted alkylimide was synthesized to investigate uranium(VI) adsorption properties. The chelating resin was characterized by scanning electron microscopy, infrared spectroscopy and mercury intrusion porosimetry. Results showed that the chelating resin was a macroporous resin with the average pore size of 172.8 nm. The maximum adsorption amount could reach 64.9 mg/g when the dosage was 60 mg, the initial U(VI) concentration was 100 mg/L, the pH was 5.0 and the balance time was 48 h. The adsorption process was accorded with pseudo-first-order kinetic model and Freundlich isotherm model, and adsorption process was a spontaneous endothermic reaction.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2017
·Vol. 314
·期 3
·1915-1925
·
IF 1.282
Gao Y.,Hou D.,He D. X.,Jiang M.,Yang X. C.,Liao S.,Zhang W.,Yan X. M.,Tan N.
The grafted mangrove endophytic fungus Fusarium sp. #ZZF51 by phytic acid with polyphosphate groups (PA-ZZF51) was successfully synthesized by esterification reaction, and its uranium(VI) biosorption conditions, models, mechanism and regeneration property were also obtainted. The uranium(VI) removal from aqueous solution by PA-ZZF51 was optimized at pH (5.0), S/L ratio (0.2 g L −1 ), time (45 min), and the initial uranyl ions concentration (100 mg L −1 ) with 453.70 mg g −1 of biosorption capacity and 90.74% of removal percentage, respectively. Kinetic and equilibrium biosorption studies showed pseudo-second-order equation and Langmuir isotherm model could better fit with the experiment data. FTIR and SEM of the prepared material indicated the various functionalities on the mycelium surface including hydroxyl, carboxyl, phosphate groups and so on were responsible for the binding of uranyl ions.
研究领域:
环境生物学
·
生物化学
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2021
·Vol. 328
·期 1
·397-410
·
IF 1.371
Wang Yanlin,Long Jun,Xu Wenjie,Luo Huan,Liu Jun,Zhang Yaping,Li Jinchao,Luo Xuegang
The development of highly efficient adsorbent presents an enticing prospect for U(VI)-containing radioactive wastewater treatment. In this work, a novel porous cCS/PVA/UiO-66-NH 2 membrane absorbent comprising of crosslinked chitosan (cCS), polyvinyl alcohol (PVA) and UiO-66-NH 2 is designed and prepared. The adsorption capacity of porous cCS/PVA/UiO-66-NH 2 membrane achieves 316.50 mg g −1 under an optimal condition. Furthermore, the porous cCS/PVA/UiO-66-NH 2 membrane exhibits a high selectivity for U(VI) adsorption in simulated radioactive wastewater treatment. The possible mechanism of U(VI) adsorption onto porous cCS/PVA/UiO-66-NH 2 membrane mainly includes surface complexation and cation exchange processes. In addition, the porous cCS/PVA/UiO-66-NH 2 membrane also exhibits excellent cycling adsorption-desorption performance. All these results demonstrate that the porous cCS/PVA/UiO-66-NH 2 membrane is a promising candidate for application in U(VI) removal from radioactive wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2024
·
IF 3.7
Yang Wang,Qi Ren,Hongtao Xia,Jianqi Lv,Zihao Feng,Cong Yin,Yanjun Du,Yang Li,Yun Wang
Pollution from uranium(VI)-containing wastewater is a non-negligible part during the use of nuclear energy and becomes the urgent problem to be solved. This work coupled hydrothermal and pyrolytic process to prepare magnesium oxide loaded lotus seedpods-derived biochar (MgO-HBC) for U(VI) adsorption in aqueous solution. The coupling process significantly enhanced the surface area, thermal stability and active sites of biochar. Batch adsorption experiments showed that MgO-HBC had the characteristics of fast adsorption rate (within 30 min), high U(VI) adsorption capacity (906.5 mg∙g −1 ) and susceptibility to solution pH and temperature. The fittings of the pseudo-second-order and Langmuir model revealed a chemical adsorption process with homogeneous monolayer. Thermodynamics analysis demonstrated the spontaneity, endothermicity and randomness of adsorption process . Adsorption mechanism proved that U(VI) adsorption by MgO-HBC was through the complexation between uranyl and its hydrolysates of Mg-O. The work provided a new synthesis strategy of MgO-HBC for U(VI) pollution cleanup.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 4
·1303-1314
·
IF 1.6
Xiong Lingshan,Wang Youqun,Cui Wenzheng,Chen Lei,Luo Qie,Cao Xiaohong,Liu Yunhai
Amorphous titanium phosphates (ATP) doped with NH 4 + , K + , Na + , and Li + ions (ATP-M, M = NH 4 , K, Na, and Li) were prepared by a co-precipitation method. The SEM&EDS, TGA, XRD characterizations displayed that ATP-M was successfully synthesized, and the doping of NH 4 + , K + , Na + , and Li + ions did not change the crystal form of ATP. The results revealed that the optimum pH value for U(VI) extraction on ATP-M was determined to be 5.0. Moreover, the saturated adsorption capacity obtained by the Langmuir equation for ATP-NH 4 , ATP-K, ATP-Na, and ATP-Li was 505.1, 366.1, 273.3, and 144.1 mg g −1 , respectively. Furthermore, the interaction between ATP-M and U(VI) was discussed. In short, ATP-NH 4 may be an effective adsorbent to remove of U(VI) in wastewater due to its high adsorption ability.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2016
·Vol. 310
·期 1
·263-270
·
IF 0.983
Liu Hui-Jun,Jing Peng-Fei,Liu Xiu-Yun,Du Ke-Jie,Sun Yun-Kai
A novel β-cyclodextrin functionalized silica gel (SAM-Si-β-CD) was prepared with grafting β-cyclodextrin (β-CD) to silica gel (Si-β-CD) containing salicylamide. It was characterized using XPS, SEM and FT-IR techniques. Variables of batch experiments including pH, temperature, contact time, interfering ions were studied. Langmuir, Freundlich isotherm and kinetic models were suitable to describe the adsorption process. The results showed that the equilibrium adsorption capacity was found to be 6.45 mg g −1 respectively at pH 4.5, equilibrium time 60 min and initial uranium(VI) concentration 25 mg L −1 . Additionally, SAM-Si-β-CD effectively adsorbed UO 2
2+ in aqueous solution in the presence of interfering ions (Na + , Fe 3+ , Cu 2+ , Mg 2+ , La 3+ , Mn 2+ , Zn 2+ , Pb 2+ and Hg 2+ ).
研究领域:
环境科学
·
材料化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2020
·Vol. 326
·期 2
·1307-1321
·
IF 1.137
Yin Na,Ai Yong,Xu Yuanxin,Ouyang Yanquan,Yang Pengfei
Magnetic carbon aerogels were prepared from inexpensive and readily available winter melon to adsorb U(VI). The morphology, structure, magnetism, characteristic functional groups and chemical bonds of magnetic carbon aerogels were characterized by TEM, SEM, XRD, BET, VSM, FT-IR, XPS. Under the condition of 303 K and pH 6, magnetic carbon aerogel reached adsorption equilibrium within 120 min, with the adsorption capacity of 230.3 mg g –1 , much higher than that of carbon aerogel (77.9 mg g –1 ), which is the function of Fe–O. The good magnetism of magnetic carbon aerogels allows it to be easily separated from the solution by applying magnetic field. The adsorption isotherm data accord with Langmuir isothermal model. Adsorption is a spontaneous and endothermic process.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RADIOCHIMICA ACTA
·
2021
·Vol. 109
·期 10
·759-771
·
IF 1.44
You-qun Wang,Huan Wang,Yue Feng,Zhi-bin Zhang,Xiao-hong Cao,Yun-hai Liu
In this work, diethylenetriamine pentamethylenephosphonic acid (DTPMP) was ultilized into preparing of Zr(IV) organophosphates hybrids (Zr-DTPMP- x , x was the molar ratio of Zr(IV)/DTPMP in the synthetic process, x = 0.5, 1, 2, and 3) using a hydrothermal method. The physical and chemical properties of Zr-DTPMP- x were characterized by SEM&EDS, FT-IR, XRD, Zeta potential, XPS, TGA and contact angle analysis. Moreover, the adsorptive performances of Zr-DTPMP- x for U(VI) were investigated. The adsorption results showed that the optimum molar ratio of Zr(IV) to phosphine, pH, equilibrium time, and dosage was 0.5, 4.0, 180 min, and 10 mg, respectively. Besides, the adsorption of U(VI) was in accordance with the pseudo-second-order kinetic model and Sips isothermal model. Moreover, the adsorption capacity determined by Sips isothermal model was 181.34 mg g −1 for Zr-DTPMP-0.5. Furthermore, the adsorptive selectivity of Zr-DTPMP-0.5 for U(VI) was superior than the others. Zr-DTPMP-0.5 may be a powerful candidate for diminishing the contamination of U(VI).
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Hongtao Xia,Qi Ren,Jianqi Lv,Yang Wang,Zihao Feng,Yang Li,Changfu Wang,Yan Liu,Yun Wang
An innovative chitosan/graphene oxide composite containing phytic acid (PCG) was fabricated directly by a single hydrothermal reaction using graphene oxide, chitosan, and phytic acid as raw materials for the removal of uranium (VI) from aqueous solutions. The results demonstrated that PCG from the chemical bonding between the hydroxyl group in the phytic acid molecule and the amino group in chitosan possessed flaky surface porous structure, good thermal stability and strong chelating ability to uranium (VI). The adsorption process of PCG for uranium (VI) was consistent with the Langmuir isothermal and pseudo-second-order kinetic models, and its maximum adsorption capacity could reach 325.56 mg/g at pH 5.0. The synthesized PCG exhibited higher adsorption selectivity due to the strong chelating of both the hydroxyl groups and phosphate groups on PCG with uranium (VI). With its easy synthesis, facile solid-liquid separation, good biocompatibility, and negligible toxicity, PCG can effectively recover uranium (VI) from uranium-containing wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 14
·2966
·
IF 4.6
Tian Lan,Xiechun Liu,Haifeng Cong,Xiaofan Ding,Jing Zhao,Songtao Xiao
In this study, a novel adsorbent, UiO-66-H3IMDC, was successfully prepared by functionalizing UiO-66 with imidazole-4,5-dicarboxylic acid (H3IMDC). The effective functionalization of H3IMDC on UiO-66 was confirmed by powder X-ray diffraction (PXRD) and Fourier transform infrared spectroscopy (FT-IR). The relationships between the adsorption of U(VI) on UiO-66-H3IMDC and the contact time, the pH of the solution, as well as the initial concentration of U(VI) were investigated. Additionally, the selective adsorption of U(VI) by UiO-66-H3IMDC and its cyclic regeneration performance were also studied. The results demonstrate that the UiO-66-H3IMDC adsorbent exhibits excellent adsorption performance for uranium in aqueous solutions.
研究领域:
环境科学
·
材料科学
·
化学工程
·
放射化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Hao Lei,Daohui Zhou,Jiao Tang,Xiaoping Hu,Ning Pan,Hao Zou,Fangting Chi,Xiaoqiang Wang
A novel approach to synthesize phytic acid (PA) functionalized graphene oxide (P-pFGO-7) treated by the photo-Fenton reaction has been designed, which has been used as an adsorbent for efficient capture of U(VI) from aqueous solution. The structure and morphology of P-pFGO-7 were characterized well. The adsorption property for P-pFGO-7 was comprehensively assessed by batch experiments, showing the high adsorption capacity (266.7 mg/g, at pH = 4.0, T = 298 K), fast adsorption kinetics (~10 min), good selectivity for U(VI) and Ln-An ions in various coexisting ions and excellent regeneration capacity. With the assistance of various characterization techniques and batch adsorption results, it is found that PA makes the most contribution to coordinate U(VI) heavily depending on the P O moiety. P-pFGO-7 could be regenerated by 0.1 mol/L Na 2 CO 3 with ~95% desorption efficiency and reused well after five recycles. This present work provides a feasible route to modify graphene oxide and extend PA for potentially practical application in the removal of U(VI) from radioactive wastewater .
研究领域:
环境化学
·
核科学与技术
·
材料科学
·
水处理技术
·
放射化学
·
纳米材料
·
吸附科学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Liya Zhang,Xiangrong Wang,Qina Yu,Can Cheng,Aixin Song,Jingcheng Hao
The adsorption of uranium (VI) from wastewater is vital for environment treatment and sustainable growth of the nuclear energy industry. The porous adsorbents with excellent adsorption capacity can be efficiently fabricated by the template from surfactant stabilized foams, but the template is rather susceptible and easily destabilized, resulting in the unsatisfactory performance for target materials. In this work, we proposed a cooperative method using Schiff base reaction combining with surfactant foaming for constructing stable porous templates. A surfactant, cocamidopropyl betaine (CAB), was applied to stabilize foams containing chitosan (CS), glutaraldehyde (GA), acrylamide (AAm) and acrylic acid (AA). The Schiff base reaction between CS and GA endowed the foams with superior stability due to the formation of 3D network in the fluid films. A secondary network generated by polymerizing acrylamide (AAm) and acrylic acid (AA) further reinforced the structure, yielding a highly porous adsorbent (89.5% porosity). The adsorbent, CGAA@NTs, achieved a high U(VI) uptake capacity of 826 mg·g -1 under light irradiation thanks to the incorporation of carboxylated carbon nanotubes (CCNTs), which conferred the adsorbent with excellent photothermal performance, creating a local heat environment to facilitate the U(VI) uptake under light irradiation. Meanwhile, in the complex environment of wastewater, the abundant functional groups (e.g., −NH 2 and −COOH) enabled rich interactions with U(VI) via electrostatic effect and metal-coordination, opening an avenue for exploiting highly porous adsorbents of U(VI) using stable foams as templates.
研究领域:
环境科学
·
材料科学
·
化学工程
·
核能
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）