1
|
Duan Y, Liu F, Liu X, Li M. Removal of Cr(VI) by glutaraldehyde-crosslinked chitosan encapsulating microscale zero-valent iron: Synthesis, mechanism, and longevity. J Environ Sci (China) 2024; 142:115-128. [PMID: 38527878 DOI: 10.1016/j.jes.2023.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/04/2023] [Accepted: 07/04/2023] [Indexed: 03/27/2024]
Abstract
Microscale zero-valent iron (mZVI) has shown great potential for groundwater Cr(VI) remediation. However, low Cr(VI) removal capacity caused by passivation restricted the wide use of mZVI. We prepared mZVI/GCS by encapsulating mZVI in a porous glutaraldehyde-crosslinked chitosan matrix, and the formation of the passivation layer was alleviated by reducing the contact between zero-valent iron particles. The average pore diameter of mZVI/GCS was 8.775 nm, which confirmed the mesoporous characteristic of this material. Results of batch experiments demonstrated that mZVI/GCS exhibited high Cr(VI) removal efficiency in a wide range of pH (2-10) and temperature (5-35°C). Common groundwater coexisting ions slightly affected mZVI/GCS. The material showed great reusability, and the average Cr(VI) removal efficiency was 90.41% during eight cycles. In this study, we also conducted kinetics and isotherms analysis. Pseudo-second-order model was the most matched kinetics model. The Cr(VI) adsorption process was fitted by both Langmuir and Freundlich isotherms models, and the maximum Langmuir adsorption capacity of mZVI/GCS reached 243.63 mg/g, which is higher than the adsorption capacities of materials reported in most of the previous studies. Notably, the column capacity for Cr(VI) removal of a mZVI/GCS-packed column was 6.4 times higher than that of a mZVI-packed column in a 50-day experiment. Therefore, mZVI/GCS with a porous structure effectively relieved passivation problems of mZVI and showed practical application prospects as groundwater Cr(VI) remediation material with practical application prospects.
Collapse
Affiliation(s)
- Yijun Duan
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Fang Liu
- Transportation Institute of Inner Mongolia University, Hohhot 010070, China
| | - Xiang Liu
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Miao Li
- School of Environment, Tsinghua University, Beijing 100084, China.
| |
Collapse
|
2
|
Liu M, Chen G, Xu L, He Z, Ye Y. Environmental remediation approaches by nanoscale zero valent iron (nZVI) based on its reductivity: a review. RSC Adv 2024; 14:21118-21138. [PMID: 38966811 PMCID: PMC11223516 DOI: 10.1039/d4ra02789b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 06/27/2024] [Indexed: 07/06/2024] Open
Abstract
The fast rise of organic and metallic pollution has brought significant risks to human health and the ecological environment. Consequently, the remediation of wastewater is in extremely urgent demand and has received increasing attention. Nanoscale zero valent iron (nZVI) possesses a high specific surface area and distinctive reactive interfaces, which offer plentiful active sites for the reduction, oxidation, and adsorption of contaminants. Given these abundant functionalities of nZVI, it has undergone significant and extensive studies on environmental remediation, linking to various mechanisms, such as reduction, oxidation, surface complexation, and coprecipitation, which have shown great promise for application in wastewater treatment. Among these functionalities of nZVI, reductivity is particularly important and widely adopted in dehalogenation, and reduction of nitrate, nitro compounds, and metal ions. The following review comprises a short survey of the most recent reports on the applications of nZVI based on its reductivity. It contains five sections, an introduction to the theme, chemical reduction applications, electrolysis-assisted reduction applications, bacterium-assisted reduction applications, and conclusions about the reported research with perspectives for future developments. Review and elaboration of the recent reductivity-dependent applications of nZVI may not only facilitate the development of more effective and sustainable nZVI materials and the protocols for comprehensive utilization of nZVI, but may also promote the exploration of innovative remediation approaches based on its reductivity.
Collapse
Affiliation(s)
- Mingyue Liu
- School of Pharmaceutical and Chemical Engineering, Taizhou University Taizhou 318000 Zhejiang Province China
| | - Gang Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University Taizhou 318000 Zhejiang Province China
| | - Linli Xu
- School of Pharmaceutical and Chemical Engineering, Taizhou University Taizhou 318000 Zhejiang Province China
| | - Zhicai He
- School of Pharmaceutical and Chemical Engineering, Taizhou University Taizhou 318000 Zhejiang Province China
| | - Yuyuan Ye
- School of Pharmaceutical and Chemical Engineering, Taizhou University Taizhou 318000 Zhejiang Province China
| |
Collapse
|
3
|
Wang S, Hu J, Wang J. Enhanced uranium removal from aqueous solution by core-shell Fe 0@Fe 3O 4: Insight into the synergistic effect of Fe 0 and Fe 3O 4. CHEMOSPHERE 2024; 354:141730. [PMID: 38492682 DOI: 10.1016/j.chemosphere.2024.141730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/08/2024] [Accepted: 03/14/2024] [Indexed: 03/18/2024]
Abstract
In this study, Fe0@Fe3O4 was synthesized and used to remove U(VI) from groundwater. Different experimental conditions and cycling experiments were used to investigate the performance of Fe0@Fe3O4 in the U(VI) removal, and the XRD, TEM, XPS and XANES techniques were employed to characterize the Fe0@Fe3O4. The results showed that the U(VI) removal efficiency of Fe0@Fe3O4 was 48.5 mg/g that was higher than the sum of removal efficiency of Fe0 and Fe3O4. The uranium on the surface of Fe0@Fe3O4 mainly existed as U(IV), followed by U(VI) and U(V). The Fe0 content decreased after reaction, while the Fe3O4 content increased. Based on the results of experiments and characterization, the enhanced removal efficiency of Fe0@Fe3O4 was attributed to the synergistic effect of Fe0 and Fe3O4 in which Fe3O4 accelerated the Fe0 corrosion that promoted the progressively formation of Fe(II) that promoted the reduction of adsorbed U(VI) to U(IV) and incorporated U(VI) to U(V). The performance of Fe0@Fe3O4 at near-neutrality condition was better than at acidic and alkalic conditions. The chloride ions, sulfate ions and nitrate ions showed minor effect on the Fe0@Fe3O4 performance, while carbonate ions exhibited significant inhibition. The metal cations showed different effect on the Fe0@Fe3O4 performance. The removal efficiency of Fe0@Fe3O4 decreased with the number of cycling experiment. Ionizing radiation could regenerate the used Fe0@Fe3O4. This study provides insight into the U(VI) removal by Fe0@Fe3O4 in aqueous solution.
Collapse
Affiliation(s)
- Shizong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Jun Hu
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing, 100084, PR China.
| |
Collapse
|
4
|
Kumari N, Arya S, Behera M, Seth CS, Singh R. Chitosan anchored nZVI bionanocomposites for treatment of textile wastewater: Optimization, mechanism, and phytotoxic assessment. ENVIRONMENTAL RESEARCH 2024; 245:118041. [PMID: 38160973 DOI: 10.1016/j.envres.2023.118041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/15/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
In recent years, there has been a growing focus on treating textile wastewater due to its escalating threat to aquatic ecosystems and exposed communities. The present study investigates the adsorption efficacy of biopolymer functionalized nanoscale zero-valent iron (CS@nZVI) composite for the treatment of textile wastewater using the RSM-CCD model. The structure and morphology of CS@nZVI were characterized using XRD, FTIR, FESEM, and EDX. CS@nZVI was then evaluated for its adsorption potential in removing COD, color, and other physico-chemical parameters from textile wastewater. The results showed the high efficacy of CS@nZVI for COD and color removal from textile wastewater. Under optimal conditions (pH 6, contact time 60 min, and 1.84 g CS@nZVI), COD removal reached a maximum of 85.53%, and decolorization efficiency was found to be 89.73%. The coefficient of determination R2 (0.98) and AIC (269.75) values suggested quadratic model as the best-fitted model for optimizing the process parameters for COD removal. Additionally, the physico-chemical parameters were found to be within permissible limits after treatment with CS@nZVI. The influence of coexisting ions on COD removal followed the order PO43- > SO42- > Cl- >Na+ > Ca2+. The kinetics data fitted well with the pseudo-first-order reaction, indicating physisorption as the primary mechanism. The thermodynamic study revealed the endothermic nature of the removal process. Reusability tests demonstrated that great regeneration capacity of spent CS@nZVIafter five consecutive cycles. Furthermore, toxicological studies showed reduced toxicity in treated samples, leading to improved growth of Vigna radiata L. These findings suggest that CS@nZVI bionanocomposites could serve as an efficient, cost-effective, and eco-friendly remediation agent for the treatment of textile effluents, presenting significant prospects for commercial applications.
Collapse
Affiliation(s)
- Nisha Kumari
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer-305817, Rajasthan, India
| | - Sarita Arya
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer-305817, Rajasthan, India
| | - Monalisha Behera
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer-305817, Rajasthan, India
| | | | - Ritu Singh
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer-305817, Rajasthan, India.
| |
Collapse
|
5
|
Ao X, Zhou L, Jin J, Liu Y, Ouyang J, Liu Z, Shehzad H. Macroporous and ultralight polyethyleneimine-grafted chitosan/nano-TiO 2 foam as a novel adsorbent with antibacterial activity for the efficient U(VI) removal. Int J Biol Macromol 2023; 253:126966. [PMID: 37729991 DOI: 10.1016/j.ijbiomac.2023.126966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/23/2023] [Accepted: 09/15/2023] [Indexed: 09/22/2023]
Abstract
The radioactive contamination from the excessive discharge of uranium-containing wastewater seriously threatens environmental safety and human health. Herein, macroporous and ultralight polyethyleneimine-grafted chitosan/nano-TiO2 composite foam (PCT) with antibacterial activity was synthesized, which could quickly remove U(VI) from solution. Among different PCT adsorbents, PCT-2 had the best adsorption performance for U(VI), which could be due to its honeycomb macroporous structures and the presence of abundant amino/imine groups. The kinetics and adsorption isotherms data were found in agreement with the pseudo-second-order model and the Langmuir model, respectively, indicating chemisorption or complexation as the main adsorption mechanism. The saturated adsorption capacity of PCT-2 for U(VI) reaches 259.91 mg/g at pH 5.0 and 298 K. The PCT-2 also presents good selectivity for U(VI) with the coefficient (βU/M) order of Na+ > K+ > Mg2+ > Ca2+ > Ni2+ > Co2+ > Mn2+ > Al3+ > Fe3+ > Cu2+. The adsorption mechanism was explored using FT-IR and XPS analysis, indicating that amino/imine groups and hydroxyl groups are responsible for U(VI) complexation. Thermodynamic calculations show that U(VI) adsorption is endothermic and spontaneous. The ease of preparation, excellent adsorption performance and environmental friendliness of PCT-2 make it a novel adsorbent with antibacterial activity for radioactive contamination control.
Collapse
Affiliation(s)
- Xianqian Ao
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Limin Zhou
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China; State Key Laboratory for Nuclear Resources and Environment, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China.
| | - Jieyun Jin
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Yanlin Liu
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Jinbo Ouyang
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Zhirong Liu
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Hamza Shehzad
- State Key Laboratory for Nuclear Resources and Environment, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China; School of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan
| |
Collapse
|
6
|
Shankar S, Joshi S, Srivastava RK. A review on heavy metal biosorption utilizing modified chitosan. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1350. [PMID: 37861930 DOI: 10.1007/s10661-023-11963-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 10/05/2023] [Indexed: 10/21/2023]
Abstract
Heavy metal pollution in water bodies is a global concern. The prominent source of metal contamination in aqueous streams and groundwater is wastewater containing heavy metal ions. Elevated concentrations of heavy metals in water bodies can have a negative impact on water quality and public health. The most effective way to remove metal contaminants from drinking water is thought to be adsorption. A deacetylated derivative of chitin, chitosan, has a wide range of commercial uses since it is biocompatible, nontoxic, and biodegradable. Due to its exceptional adsorption behavior toward numerous hazardous heavy metals from aqueous solutions, chitosan and its modifications have drawn a lot of interest in recent years. Due to its remarkable adsorption behavior toward a range of dangerous heavy metals, chitosan is a possible agent for eliminating metals from aqueous solutions. The review has focused on the ideas of biosorption, its kinds, architectures, and characteristics, as well as using modified (physically and chemically modified) chitosan, blends, and composites to remove heavy metals from water. The main objective of the review is to describe the most important aspects of chitosan-based adsorbents that might be beneficial for enhancing the adsorption capabilities of modified chitosan and promoting the usage of this material in the removal of heavy metal pollutants.
Collapse
Affiliation(s)
- Shiv Shankar
- Department of Environmental Science, School of Vocational Studies and Applied Science, Gautam Buddha University, Greater Noida, Uttar Pradesh, 201312, India
| | - Sarita Joshi
- Department of Environmental Science, School of Vocational Studies and Applied Science, Gautam Buddha University, Greater Noida, Uttar Pradesh, 201312, India.
| | - Rajeev Kumar Srivastava
- Department of Environmental Science, College of Basic Science and Humanities, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, 263145, India
| |
Collapse
|
7
|
Li X, Huang J, Shi Z, Xie Y, Xu Z, Long J, Song G, Wang Y, Zhang G, Luo X, Zhang P, Zha S, Li H. Reduction and adsorption of uranium(VI) from aqueous solutions using nanoscale zero-valent manganese. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118088. [PMID: 37201389 DOI: 10.1016/j.jenvman.2023.118088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/30/2023] [Accepted: 05/01/2023] [Indexed: 05/20/2023]
Abstract
Nano zero-valent manganese (nZVMn) is theoretically expected to exhibit high reducibility and adsorption capacity, yet its feasibility, performance, and mechanism for reducing and adsorbing hexavalent uranium (U(VI)) from wastewater remain unclear. In this study, nZVMn was prepared via borohydride reduction, and its behaviors about reduction and adsorption of U(VI), as well as the underlying mechanism, were investigated. Results indicated that nZVMn exhibited a maximum U(VI) adsorption capacity of 625.3 mg/g at a pH of 6 and an adsorbent dosage of 1 g/L, and the co-existing ions (K+, Na+, Mg2+, Cd2+, Pb2+, Tl+, Cl-) at studied range had little interference on U(VI) adsorption. Furthermore, nZVMn effectively removed U(VI) from rare-earth ore leachate at a dosage of 1.5 g/L, resulting in a U(VI) concentration of lower than 0.017 mg/L in the effluent. Comparative tests demonstrated the superiority of nZVMn over other manganese oxides (Mn2O3 and Mn3O4). Characterization analyses, including X-ray diffraction and depth profiling X-ray photoelectron spectroscopy, combined with density functional theory calculation revealed that the reaction mechanism of U(VI) using nZVMn involved reduction, surface complexation, hydrolysis precipitation, and electrostatic attraction. This study provides a new alternative for efficient removal of U(VI) from wastewater and improves the understanding of the interaction between nZVMn and U(VI).
Collapse
Affiliation(s)
- Xiaohan Li
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Juanxi Huang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Zhengqin Shi
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Yuan Xie
- Key Laboratory of Radioactive and Rare Scattered Minerals, Ministry of Natural Resources, Shaoguan, 512026, China
| | - Zhengfan Xu
- Key Laboratory of Radioactive and Rare Scattered Minerals, Ministry of Natural Resources, Shaoguan, 512026, China
| | - Jianyou Long
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Gang Song
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yaxuan Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Gaosheng Zhang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Xiatiao Luo
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Ping Zhang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Shuxiang Zha
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Huosheng Li
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
| |
Collapse
|
8
|
Yu J, Zhang X, Zhao X, Ma R, Du Y, Zuo S, Dong K, Wang R, Zhang Y, Gu Y, Sun J. Heterogeneous Fenton oxidation of 2,4-dichlorophenol catalyzed by PEGylated nanoscale zero-valent iron supported by biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:41333-41347. [PMID: 36630031 DOI: 10.1007/s11356-023-25182-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
The excessive use of herbicides and fungicides containing 2,4-dichlorophenol (2,4-DCP) has led to serious environmental water pollution; 2,4-DCP is chemically stable and difficult to be degraded effectively by biological and physical methods. And the degradation of 2,4-DCP using advanced oxidation techniques has been a hot topic. Biochar, polyethylene glycol, ferrous sulfate, and sodium borohydride were used to synthesize the heterogeneous catalyst PEGylated nanoscale zero-valent iron supported by biochar (PEG-nZVI@BC). The catalyst was characterized using scanning electron microscope (SEM) and other means to determine its physicochemical properties. Catalytic performance and mechanism of this catalyst with hydrogen peroxide for the oxidation of 2,4-DCP were investigated. The results showed that PEG-nZVI@BC had good dispersibility, stability, and inoxidizability; the degradation efficiency of 50 mg/L 2,4-DCP by PEG-nZVI@BC/H2O2 system 92.94%, 1.68 times higher than that of nZVI/H2O2 system; there are both free radical and non-free radical pathways in PEG-nZVI@BC/H2O2 system; the degradation process of 2,4-DCP includes hydroxylation, dechlorination, and ring-opening. Overall, PEG-nZVI@BC is a promising heterogeneous catalyst for the degradation of 2,4-DCP.
Collapse
Affiliation(s)
- Junlong Yu
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Xiuxia Zhang
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China.
| | - Xiaodong Zhao
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Ruojun Ma
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Yi Du
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Shuai Zuo
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Kangning Dong
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Ruirui Wang
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Yupeng Zhang
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Yingying Gu
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Juan Sun
- Department of Environmental and Safety Engineering, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| |
Collapse
|
9
|
Morphological and structural analysis of Fe/Sn bimetal system and graphene oxide–chitosan modified Fe/Sn composite: a comparative study and their mechanistic role in degradative fixation of chlorazol black and reactive blue 4 from water. REACTION KINETICS MECHANISMS AND CATALYSIS 2023. [DOI: 10.1007/s11144-023-02366-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
|
10
|
Pb 2+-imprinted thermosensitive antibacterial adsorbent derived from sodium alginate and PNIPAM for Pb 2+ recovery. Int J Biol Macromol 2023; 225:207-218. [PMID: 36346257 DOI: 10.1016/j.ijbiomac.2022.10.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 10/11/2022] [Accepted: 10/27/2022] [Indexed: 11/05/2022]
Abstract
Two sodium alginate-based Pb2+-imprinted thermosensitive hydrogels (SPIT (without ɛ-PL) and SPPIT (with ɛ-PL)) were synthesized, with sodium alginate and ɛ-polylysine (ɛ-PL) as the matrix, N-isopropylacrylamide as the monomer. Characterization with differential scanning calorimeter, Fourier transform infrared spectroscopy, thermogravimetric analyzer, scanning electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy confirmed the aimed structure of the hydrogels. The adsorption capacity of SPIT and SPPIT for Pb2+ was 98.64 mg/g and 153.49 mg/g, respectively. Washing the Pb2+-loaded adsorbent with 10 °C deionized water, SPIT and SPPIT achieved a desorption efficiency of 94.59 % and 97.51 %, respectively. After 10 cycles of adsorption-desorption process, the adsorption capacity and desorption efficiency remained at about 80-88 % of the original ones, expressing excellent reusability. In a mixture containing eight metal ions (Pb2+, Cu2+, Mg2+, Ca2+, Cd2+, Na+, K+, Fe3+), the adsorption capacity of SPIT to Pb2+ was 92.49 mg/g, and that of SPPIT was 102.49 mg/g, much higher than that to the other ions (1.50-11.38 mg/g on SPIT, 9.48-27.45 mg/g on SPPIT), showing excellent adsorption selectivity. The introduction of ɛ-PL enhanced the adsorption capacity, antibacterial ability and stability of the hydrogel, ensuring better application potential in real wastewater.
Collapse
|
11
|
Poly(amidoxime)-graft-magnetic chitosan for highly efficient and selective uranium extraction from seawater. Carbohydr Polym 2022; 301:120367. [DOI: 10.1016/j.carbpol.2022.120367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 11/07/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022]
|
12
|
Zhou A, Qiu Z, Yang J, Yan R. A magnetic chitosan for efficient adsorption of vanadium (V) from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:76263-76274. [PMID: 35668258 DOI: 10.1007/s11356-022-21256-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
The all-vanadium redox flow battery (VRFB) is becoming a promising technology for large-scale energy storage due to its advantages such as scalability and flexibility. In recent years, the VRFB has been successfully developed and put into use in many countries. It is expected that the abandoned VRFB will generate a large amount of vanadium waste. To our knowledge, there are few reports on the disposal of spent VRFBs. Herein, chitosan-coated nano-zero-valent iron (CS-Fe0) is proposed for the first time as adsorbents for the treatment of spent VRFBs. It can provide a new approach to deal with the upcoming large number of spent VRFBs. The calculated maximum adsorption capacity for V(V) of chitosan and CS-Fe0 reached 209.5 and 511.3 mg/g at 288 K, respectively. CS-Fe0 showed better adsorption performance than chitosan under different pH conditions and is easy to be separated from the liquid phase. The Freundlich isotherm was suitable for the adsorption process of chitosan, and CS-Fe0 was more consistent with the Langmuir isotherm. Ionic strength (0.05-0.5 M) had a positive effect on the adsorption capacity of CS-Fe0, and the influence of coexisting anions on CS-Fe0 could be negligible. FTIR and XPS analyses revealed that the primary mechanisms were the electrostatic attraction of chitosan and redox of Fe0. The present study confirmed that CS-Fe0 could be a potential material to efficiently trap V(V) from the VRFB electrolyte.
Collapse
Affiliation(s)
- Anhui Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Zhaofu Qiu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Ji Yang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China.
| | - Ruiqi Yan
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| |
Collapse
|
13
|
Bao QX, Liu Y, Liang YQ, Weerasooriya R, Li H, Wu YC, Chen X. Tea polyphenols mediated Zero-valent Iron/Reduced graphene oxide nanocomposites for electrochemical determination of Hg2+. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116428] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
14
|
Shen H, Chen L, Zhou C, Du J, Lu C, Yang H, Tan L, Zeng X, Dong L. Immobilizing Fe0 nanoparticles on covalent organic framework towards enhancement of Cr(VI) removal by adsorption and reduction synergistic effect. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120883] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
15
|
Hu H, Zhao D, Wu C, Xie R. Sulfidized Nanoscale Zerovalent Iron Supported by Oyster Powder for Efficient Removal of Cr (VI): Characterization, Performance, and Mechanisms. MATERIALS 2022; 15:ma15113898. [PMID: 35683196 PMCID: PMC9182185 DOI: 10.3390/ma15113898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 02/03/2023]
Abstract
In this study, sulfidized nanoscale zerovalent iron (S-nZVI) supported by oyster shell (OS) powder (S-nZVI@OS) was synthesized by controlling the initial S/Fe ratios (0.1–0.5) to explore the potential synergistic effects during the adsorption and reduction of Cr (VI). X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) analyses showed that Fe (0) and FeS were well dispersed on the OS surface. Furthermore, the stability of S-nZVI@OS composite was higher than that of nZVI, which was proved by the material ageing experiment. The effects of different S/Fe molar ratios, time, temperature, the initial concentration of Cr (VI), and initial pH on the removal efficiency were also studied. The results indicated that with the increase of the S/Fe molar ratio, the removal capacity of Cr (VI) first increased rapidly and then decreased slowly. Batch experiments showed that an optimal S/Fe molar ratio of 0.2 offered a Cr (VI) removal capacity of about 164.7 mg/g at pH 3.5. The introduction of S can not only promote Cr (VI) reduction but also combine with Cr (III) by forming precipitate on S-nZVI@OS mainly as CrxFe(1−x) OOH and Cr2S3. The adsorption thermodynamics and kinetics demonstrated that the Langmuir model and pseudo-second-order kinetics model can describe the adsorption isotherms and kinetics. These results suggest that S-nZVI@OS is an effective and safe material for removing Cr (VI) from aqueous solutions.
Collapse
Affiliation(s)
| | - Donglin Zhao
- Correspondence: ; Tel.: +86-551-63828100; Fax: +86-551-63828103
| | | | | |
Collapse
|
16
|
Zhou H, Ye M, Zhao Y, Baig SA, Huang N, Ma M. Sodium citrate and biochar synergistic improvement of nanoscale zero-valent iron composite for the removal of chromium (Ⅵ) in aqueous solutions. J Environ Sci (China) 2022; 115:227-239. [PMID: 34969450 DOI: 10.1016/j.jes.2021.05.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 05/28/2021] [Accepted: 05/31/2021] [Indexed: 06/14/2023]
Abstract
Sodium citrate (SC) is a widely-used food and industrial additive with the properties of complexation and microbial degradation. In the present study, nano-zero-valent iron reaction system (SC-nZVI@BC) was successfully established by modifying nanoscale zero-valent iron (nZVI) with SC and biochar (BC), and was employed to remove Cr(Ⅵ) from aqueous solutions. The nZVI, SC-nZVI and SC-nZVI@BC were characterized and compared using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analyses (TGA), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results showed that nZVI was successfully loaded on the biochar, and both the agglomeration and surface passivation problems of nanoparticles were well resolved. The dosage of SC, C:Fe, initial pH and Cr(Ⅵ) concentration demonstrated direct effects on the removal efficiency. The maximum Cr(Ⅵ) removal rate and the removal capacity within 60 min were 99.7% and 199.46 mg/g, respectively (C:Fe was 1:1, SC dosage was 1.12 mol.%, temperature was 25°C, pH = 7, and the original concentration of Cr(Ⅵ) was 20 mg/L). The reaction confirmed to follow the pseudo-second-order reaction kinetics, and the order of the reaction rate constant k was as follows: SC-nZVI@BC > nZVI@BC > SC-nZVI > nZVI. In addition, the mechanism of Cr(Ⅵ) removal by SC-nZVI@BC mainly involved adsorption, reduction and co-precipitation, and the reduction of Cr(Ⅵ) to Cr(Ⅲ) by nano Fe0 played a vital role. Findings from the present study demonstrated that the SC-nZVI@BC exhibited excellent removal efficiency toward Cr(Ⅵ) with an improved synergistic characteristic by SC and BC.
Collapse
Affiliation(s)
- Hongyi Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Mengyao Ye
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yongkang Zhao
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shams Ali Baig
- Department of Environmental Sciences, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Ning Huang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Mengyan Ma
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| |
Collapse
|
17
|
Chen Y, Shi Y, Wan D, Zhao J, He Q, Liu Y. Synergistic adsorption and advanced oxidation activated by persulfate for degradation of tetracycline hydrochloride using iron-modified spent bleaching earth carbon. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:24704-24715. [PMID: 34825336 DOI: 10.1007/s11356-021-17435-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
At present, tetracycline hydrochloride (TCH) is a widely used antibiotic, and is often detected in water, posing a serious harm to human and ecological health. In this study, spent bleaching earth (SBE) was pyrolyzed to obtain spent bleaching earth carbon (SBE@C) and the nano Fe0/SBE@C prepared after zero-valent iron loading was adopted to remove TCH in water for the first time. The combination of nano Fe0/SBE@C and PS, the strong adsorption of SBE@C coupled with the oxidation of free radicals could achieve TCH efficient removal. The effects of nano Fe0 load, nano Fe0/SBE@C dosage, solution initial pH, and PS/TCH molar ratio on TCH removal efficiency in nano Fe0/SBE@C + PS system were studied. The results indicate that the optimal reaction conditions are 5% nano Fe0 load, 0.2 g/L nano Fe0/SBE@C dosage, initial pH of 3, PS/TCH molar ratio of 100:1. Under these conditions, TCH removal efficiency could reach 91%. Meanwhile, response surface methodology (RSM) was applied to predict optimal value of reaction conditions. The removal efficiency corresponding to the predicted optimal conditions was consistent with the actual removal efficiency obtained from the experiment. Moreover, six reaction systems were tested, and TCH removal efficiency in the SBE@C + PS system was 22.6%. When nano Fe0 was loaded on SBE@C, TCH removal efficiency in Fe0/SBE@C + PS system increased to 78.2%, in which TCH was first adsorbed on the surface of nano Fe0/SBE@C, and then was degraded by the oxidation of SO4•- and •OH. Totally, the nano Fe0/SBE@C + PS system displayed excellent TCH removal efficiency, good stability and reusability, exhibiting a promise toward TCH removal.
Collapse
Affiliation(s)
- Yue Chen
- College of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, China
| | - Yahui Shi
- College of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, China
| | - Dongjin Wan
- College of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, China
- Henan Academician Workstation of Combined Pollution Control and Research, Zhengzhou, 450001, Henan, China
| | - Jihong Zhao
- College of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, China
| | - Qiaochong He
- College of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, China
- Henan Academician Workstation of Combined Pollution Control and Research, Zhengzhou, 450001, Henan, China
| | - Yongde Liu
- College of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, China.
| |
Collapse
|
18
|
Liu F, Hua S, Wang C, Hu B. Insight into the performance and mechanism of persimmon tannin functionalized waste paper for U(VI) and Cr(VI) removal. CHEMOSPHERE 2022; 287:132199. [PMID: 34555582 DOI: 10.1016/j.chemosphere.2021.132199] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/30/2021] [Accepted: 09/06/2021] [Indexed: 05/18/2023]
Abstract
Herein, using dialdehyde waste paper (DAWP) as a cross-linking agent to immobilize persimmon tannin (PT) was first used to remove the U(VI) and Cr(VI) via the "waste control by waste" concept. The microscopic and macroscopic surface properties of the as-prepared adsorbent was characterized by the advanced characterization techniques. Factors that affected the elimination process such as variable pH, coexistence ions and equilibrium time were investigated by batch techniques. The results showed that the maximal removal capacities of U(VI) and Cr(VI) on DAWP-PT were 242.3 mg/g (pH = 6.0) and 178.7 mg/g (pH = 2.0) at 298 K, which exhibited competitiveness with most of the reported solid materials. Meanwhile, adsorption data were fitted perfectly to the Langmuir and Pseudo-second-order equations, which indicated that the monolayer and homogenous chemisorption dominated the removal process. The SEM-EDX, DFT and XPS analysis conformed that adsorption of U(VI) was mainly via surface complexation, while the elimination of Cr(VI) was a redox reaction process, and about 65.33% of Cr(III) and 34.67% of Cr(VI) co-existed onto the surface of DAWP-PT. Thus, this study would provide a high-efficiency and low-cost adsorbent for radionuclide and heavy metal treatment.
Collapse
Affiliation(s)
- Fenglei Liu
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Shan Hua
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Chao Wang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Baowei Hu
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China.
| |
Collapse
|
19
|
Wang Y, Ai Y, Liu X, Chen B, Zhang Y. Indole-functionalized cross-linked chitosan for effective uptake of uranium(VI) from aqueous solution. Polym Chem 2022. [DOI: 10.1039/d1py01725j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a novel indole-modified cross-linked chitosan aerogel (IAA-CTSA) was fabricated by grafting 3-indoleacetic acid onto chitosan and adding glutaraldehyde as crosslinking agent through a facile two-step one pot method. The...
Collapse
|
20
|
Fan M, Wang X, Song Q, Zhang L, Ren B, Yang X. Review of biomass-based materials for uranium adsorption. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-08003-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
21
|
Huang T, Su Z, Dai Y, Zhou L. Enhancement of the heterogeneous adsorption and incorporation of uranium VI caused by the intercalation of β-cyclodextrin into the green rust. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 290:118002. [PMID: 34419862 DOI: 10.1016/j.envpol.2021.118002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
The influence of intercalated anions on the structure and composition of green rusts supplies a theoretical possibility for the investigation of the structural modification of FeII/FeIII (oxyhydr)oxide materials. β-Cyclodextrin was intercalated into the mixed-valent iron-based hydroxide layers to synthesize new green rust materials (β-CD GRs), pursuing high-capacity uraniumVI (UVI) sorption. The molar ratios of FeII to FeIII and the molar ratios of β-CD GR to FeII + FeIII had a significant effect on the synthesis of β-CD GRs. The synthesis process was further optimized by the quadric predictor and desirability function in a central composite design in combination. Both strong acidity and alkalinity were harmful to the adsorption of β-CD GRs towards UVI. The pseudo-first-order kinetic model and Langmuir isotherm model were appropriate in fitting the whole adsorption process. The maximum monolayer adsorption capacity of β-CD GRs was 2548.61 mg/g. The presence of mimic groundwater constituents explicitly deteriorated the interaction between β-CD GR and UVI species. Nanoscale nodules and particles were formed on the β-CD GR after the adsorption experiments. The peaks at 1159 and 609 cm-1 vanished with the band at 1103 cm-1 being left-shifted to 1117 cm-1 in the FTIR spectra of β-CD GR during the heterogeneous process. The intercalation of β-CD brought obvious enhancement of UVI species sorption to the GR material, which was combinedly driven by several reaction pathways and different from the unmodified GRs.
Collapse
Affiliation(s)
- Tao Huang
- School of Materials Engineering, Changshu Institute of Technology, 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu, 215500, China; School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, China.
| | - Zhiyu Su
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Yuxing Dai
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Lulu Zhou
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| |
Collapse
|
22
|
Huang T, Zhang SW, Xie J, Zhou L, Liu LF. Effective adsorption of quadrivalent cerium by synthesized laurylsulfonate green rust in a central composite design. J Environ Sci (China) 2021; 107:14-25. [PMID: 34412777 DOI: 10.1016/j.jes.2021.01.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 06/13/2023]
Abstract
The layered laurylsulfonate intercalated green rust (lauryl-S GR) was synthesized to evaluate the influence of synthesis parameters and aqueous conditions on the adsorption of CeIV. The maximum adsorption capacity of 305.58 mg/g by lauryl-S GR was predictably obtained. The pseudo-first-order kinetic model was appropriate in fitting the whole uptake process in a weak acid environment. Three isotherm models including Langmuir, Freundlich, and Tempkin were all reliable in depicting the isotherm adsorption process. The maximum monolayer adsorption capacity of lauryl-S GR towards CeIV was 315.46 mg/g. Ce species including CeO and Ce2O3 besides CeO2 were matched in the XPS distribution, directly indicating the reduction reaction brought by FeII in the GR occurred to hydrated CeIV ions during the adsorption. Nano-sized Ce particles attached to the lauryl-S GRs after the adsorption experiments were observed in the morphological characterization. Flocculated materials were formed on the surface of the lauryl-S GR at a pH of 7, which further reduced the active sites and disrupted the continuous uptake of CeIV to the lauryl-S GR. This study expands the application of GRs and supplies an ideal iron-based material for the construction of the affiliated recovery pathway to the traditional separation of Ce.
Collapse
Affiliation(s)
- Tao Huang
- School of Materials Engineering, Changshu Institute of Technology, Changshu 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu 215500, China; School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou 221116, China.
| | - Shu-Wen Zhang
- Nuclear Resources Engineering College, University of South China, Hengyang 421001, China
| | - Juan Xie
- School of Textile, Garment, and Design, Changshu Institute of Technology, 215500, China.
| | - Lulu Zhou
- School of Materials Engineering, Changshu Institute of Technology, Changshu 215500, China
| | - Long-Fei Liu
- School of Materials Engineering, Changshu Institute of Technology, Changshu 215500, China
| |
Collapse
|
23
|
Fernández-Álvarez F, García-García G, Arias JL. A Tri-Stimuli Responsive (Maghemite/PLGA)/Chitosan Nanostructure with Promising Applications in Lung Cancer. Pharmaceutics 2021; 13:pharmaceutics13081232. [PMID: 34452193 PMCID: PMC8401782 DOI: 10.3390/pharmaceutics13081232] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/30/2021] [Accepted: 08/06/2021] [Indexed: 12/13/2022] Open
Abstract
A (core/shell)/shell nanostructure (production performance ≈ 50%, mean diameter ≈ 330 nm) was built using maghemite, PLGA, and chitosan. An extensive characterization proved the complete inclusion of the maghemite nuclei into the PLGA matrix (by nanoprecipitation solvent evaporation) and the disposition of the chitosan shell onto the nanocomposite (by coacervation). Short-term stability and the adequate magnetism of the nanocomposites were demonstrated by size and electrokinetic determinations, and by defining the first magnetization curve and the responsiveness of the colloid to a permanent magnet, respectively. Safety of the nanoparticles was postulated when considering the results from blood compatibility studies, and toxicity assays against human colonic CCD-18 fibroblasts and colon carcinoma T-84 cells. Cisplatin incorporation to the PLGA matrix generated appropriate loading values (≈15%), and a dual pH- and heat (hyperthermia)-responsive drug release behaviour (≈4.7-fold faster release at pH 5.0 and 45 °C compared to pH 7.4 and 37 °C). The half maximal inhibitory concentration of the cisplatin-loaded nanoparticles against human lung adenocarcinoma A-549 cells was ≈1.6-fold less than that of the free chemotherapeutic. Such a biocompatible and tri-stimuli responsive (maghemite/PLGA)/chitosan nanostructure may found a promising use for the effective treatment of lung cancer.
Collapse
Affiliation(s)
- Fátima Fernández-Álvarez
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
| | - Gracia García-García
- Faculty of Experimental Sciences, Universidad Francisco de Vitoria, 28223 Madrid, Spain;
| | - José L. Arias
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18071 Granada, Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA), Andalusian Health Service (SAS), University of Granada, 18071 Granada, Spain
- Correspondence: ; Tel.: +34-958-24-39-00
| |
Collapse
|
24
|
Li S, Hu Y, Shen Z, Cai Y, Ji Z, Tan X, Liu Z, Zhao G, Hu S, Wang X. Rapid and selective uranium extraction from aqueous solution under visible light in the absence of solid photocatalyst. Sci China Chem 2021; 64:1323-1331. [DOI: doi.org/10.1007/s11426-021-9987-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 03/18/2021] [Indexed: 06/25/2023]
|
25
|
Rajak JK, Khandelwal N, Behera MP, Tiwari E, Singh N, Ganie ZA, Darbha GK, Abdolahpur Monikh F, Schäfer T. Removal of chromate ions from leachate-contaminated groundwater samples of Khan Chandpur, India, using chitin modified iron-enriched hydroxyapatite nanocomposite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:41760-41771. [PMID: 33788088 DOI: 10.1007/s11356-021-13549-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Chromite ore processing residues (COPR) are real environmental threats, leading to CrO42-, i.e., Cr (VI) leaching into groundwater. It is of serious concern as Cr (VI) is proven to be carcinogenic. Here we emphasize the application of novel and eco-friendly chitin functionalized iron-enriched hydroxyapatite nanocomposite (HAP-Fe0-Ct) in the remediation of Cr (VI)-contaminated groundwater samples collected from Khan Chandpur, India, where the level of Cr (VI) is found to be 11.7 mg/L in a complex aqueous matrix having 793 mg/L of total dissolved solids. Chitin functionality in the composite has resulted in positive zeta potential at circum-neutral pH, favoring electrostatic attraction of chromate ions and resulting in its bulk surface transport. The HAP-Fe0-Ct showed faster kinetics of removal with efficiency (qm = 13.9 ± 0.46 mg/g) for Cr (VI). The composite has shown sorption equilibrium and 100% removal of Cr (VI) within 3 h of interaction time in groundwater samples. No Cr (VI) leaching in the acid wash process at pH 3.5 also suggests chromium's strong chemisorption onto nanocomposite. During the interaction in aqueous solutions, the reduced iron (Fe0) on the nanocomposite becomes oxidized, suggesting the probable simultaneous reduction of Cr (VI) and its co-precipitation. Continuous column extraction of chromate ions was also efficient in both spiked solutions (39.7 ± 0.04 mg/g) and COPR contaminated water (13.2 ± 0.09 mg/g). Reusability up to three cycles with almost complete Cr (VI) removal may be attributed to surface protonation, new binding sites generation, and electron transfer from Fe0 core through defects. The study concludes that HAP-Fe0-Ct could be utilized for continuous Cr (VI) removal from COPR contaminated complex groundwater matrices.
Collapse
Affiliation(s)
- Jai Kishan Rajak
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Nitin Khandelwal
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Mahima Prasad Behera
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Ekta Tiwari
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Nisha Singh
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Zahid Ahmad Ganie
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Gopala Krishna Darbha
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India.
- Center for Climate & Environmental Studies, IISER Kolkata, Mohanpur, West Bengal, 741246, India.
| | - Fazel Abdolahpur Monikh
- Department of Environmental & Biological Sciences, University of Eastern Finland, P.O. Box 111, FI-80101, Joensuu, Finland
| | - Thorsten Schäfer
- Institute of Geosciences, Applied Geology, Friedrich-Schiller-Universitat Jena, Burgweg 11, D-07749, Jena, Germany
| |
Collapse
|
26
|
Sun Y, Zhang H, Yuan N, Ge Y, Dai Y, Yang Z, Lu L. Phosphorylated biomass-derived porous carbon material for efficient removal of U(VI) in wastewater. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125282. [PMID: 33582468 DOI: 10.1016/j.jhazmat.2021.125282] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
A simple strategy to prepare cost-effective adsorbent materials for the removal of U(VI) in radioactive wastewater is of great significance to environmental protection. Here, activated orange peel was used as a precursor for the synthesis of biomass charcoal, and then a phosphorylated honeycomb-like porous carbon (HLPC-PO4) material was prepared through simple phosphorylation modification. FT-IR and XPS showed that P-O-C, P-C, and P˭O bonds appeared in HLPC-PO4, indicating that the phosphorylation process is mainly the reaction of C-O bonds on the surface of the material with -PO4. The results of the batch experiments showed that the uptake equilibrium of HLPC-PO4 to U(VI) occurred within 20 min, and the kinetic simulation showed that the process was monolayer chemical adsorption. Interestingly, the maximum U(VI) uptake capacity of HLPC-PO4 at T = 298.15 K and pH = 6.0 was 552.6 mg/g, which was more than 3 times that of HLPC. In addition, HLPC-PO4 showed an adsorption selectivity of 70.1% for U(VI). After 5 cycles, HLPC-PO4 maintained its original adsorption capacity of 90.5%. The adsorption mechanism can be explained as the complexation of U(VI) with P-O and P˭O on the surface of the adsorbent, confirming the strong bonding ability of -PO4 to U(VI).
Collapse
Affiliation(s)
- Yanbing Sun
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong 519082, PR China
| | - Haoyan Zhang
- The Fourth Research and Design Engineering Institute of China National Nuclear Corporation, Shijiazhuang, Hebei 050022, PR China; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, Jiangxi 330013, PR China
| | - Nan Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong 519082, PR China
| | - Yulin Ge
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong 519082, PR China
| | - Ying Dai
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, Jiangxi 330013, PR China
| | - Zhen Yang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong 519082, PR China.
| | - Liang Lu
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong 519082, PR China.
| |
Collapse
|
27
|
Li S, Hu Y, Shen Z, Cai Y, Ji Z, Tan X, Liu Z, Zhao G, Hu S, Wang X. Rapid and selective uranium extraction from aqueous solution under visible light in the absence of solid photocatalyst. Sci China Chem 2021. [DOI: 10.1007/s11426-021-9987-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
28
|
Abhinaya M, Parthiban R, Kumar PS, Vo DVN. A review on cleaner strategies for extraction of chitosan and its application in toxic pollutant removal. ENVIRONMENTAL RESEARCH 2021; 196:110996. [PMID: 33716028 DOI: 10.1016/j.envres.2021.110996] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Existence of human beings in this world require a cleaner environment, in which, water is the main requirement for living. Owing to the considerable development in civilisation and considerable population explosion, an increase in the contamination of natural water resources by means of non-biodegradable contaminants like heavy metals is observed thereby increasing the need for treatment of water before usage. Despite the existence of specific limits for disposal of heavy metals in water resources, studies still show high contamination of heavy metals in all these water resources. This review provides a brief note on sources and toxicity of different heavy metals in various oxidation states, their effects as well as highlights the numerous available and advanced techniques for heavy metals removal. Of all techniques adsorption is found to be beneficial as it doesn't inculcate any secondary pollutants to the environment. Additionally, this article has investigated the advantages of polymer nanocomposites in adsorption and mainly focused on biopolymer chitosan owing to its abundance in natural environment. The cleaner techniques for the extraction of chitosan and its functionalisation using different types of nanofillers are comprehensively discussed in this review. This article suggests a better alternative for conventional adsorbents as well as aids in remediation of wastes.
Collapse
Affiliation(s)
- M Abhinaya
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India
| | - R Parthiban
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| |
Collapse
|
29
|
Saheed IO, Oh WD, Suah FBM. Chitosan modifications for adsorption of pollutants - A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124889. [PMID: 33418525 DOI: 10.1016/j.jhazmat.2020.124889] [Citation(s) in RCA: 145] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 05/18/2023]
Abstract
In recent times, research interest into the development of biodegradable, cost-effective and environmental friendly adsorbents with favourable properties for adsorption of pollutants is a challenge. Modification of chitosan via different physical and chemical methods have gained attention as a promising approach for removing organic (such as dyes and pharmaceuticals) and inorganic (such as metal/metal ions) pollutants from aqueous medium. In this regard, researchers have reported grafting and cross-linking approach among others as a potentially useful method for chitosan's modification for improved adsorption efficiency with respect to pollutant uptake. This article reviews the trend in chitosan modification, with regards to the summary of some recently published works on modification of chitosan and their adsorption application in pollutants (metal ion, dyes and pharmaceuticals) removal from aqueous medium. The review uniquely highlights some common cross-linkers and grafting procedures for chitosan modification, their influence on structure and adsorption capacity of modified-chitosan with respect to pollutants removal. Findings revealed that the performance of modified chitosan for adsorption of pollutants depends largely on the modification method adopted, materials used for the modification and adsorption experimental conditions. Cross-linking is commonly utilized for improving the chemical and mechanical stabilities of chitosan but usually decreases adsorption capacity of chitosan/modified-chitosan for adsorption of pollutants. However, literature survey revealed that adsorption capacity of cross-linked chitosan based materials have been enhanced in recently published works either by grafting, incorporation of solid adsorbents (e.g metals, clays and activated carbon) or combination of both prior to cross-linking.
Collapse
Affiliation(s)
- Ismaila Olalekan Saheed
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia; Department of Chemical, Geological and Physical Sciences, Kwara State University, Malete, P.M.B 1530, Ilorin, Nigeria
| | - Wen Da Oh
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia
| | - Faiz Bukhari Mohd Suah
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia
| |
Collapse
|
30
|
Beaded segments like bi-metallic nano-zero-valent iron-titanium for the fast and efficient adsorption and reduction of U(VI) in aqueous solutions. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.126080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
31
|
Hua Y, Li D, Gu T, Wang W, Li R, Yang J, Zhang WX. Enrichment of Uranium from Aqueous Solutions with Nanoscale Zero-valent Iron: Surface Chemistry and Application Prospect. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a21040160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
32
|
Nasrollahzadeh M, Sajjadi M, Iravani S, Varma RS. Starch, cellulose, pectin, gum, alginate, chitin and chitosan derived (nano)materials for sustainable water treatment: A review. Carbohydr Polym 2021; 251:116986. [PMID: 33142558 PMCID: PMC8648070 DOI: 10.1016/j.carbpol.2020.116986] [Citation(s) in RCA: 238] [Impact Index Per Article: 79.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 12/12/2022]
Abstract
Natural biopolymers, polymeric organic molecules produced by living organisms and/or renewable resources, are considered greener, sustainable, and eco-friendly materials. Natural polysaccharides comprising cellulose, chitin/chitosan, starch, gum, alginate, and pectin are sustainable materials owing to their outstanding structural features, abundant availability, and nontoxicity, ease of modification, biocompatibility, and promissing potentials. Plentiful polysaccharides have been utilized for making assorted (nano)catalysts in recent years; fabrication of polysaccharides-supported metal/metal oxide (nano)materials is one of the effective strategies in nanotechnology. Water is one of the world's foremost environmental stress concerns. Nanomaterial-adorned polysaccharides-based entities have functioned as novel and more efficient (nano)catalysts or sorbents in eliminating an array of aqueous pollutants and contaminants, including ionic metals and organic/inorganic pollutants from wastewater. This review encompasses recent advancements, trends and challenges for natural biopolymers assembled from renewable resources for exploitation in the production of starch, cellulose, pectin, gum, alginate, chitin and chitosan-derived (nano)materials.
Collapse
Affiliation(s)
| | - Mohaddeseh Sajjadi
- Department of Chemistry, Faculty of Science, University of Qom, Qom, 37185-359, Iran
| | - Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Rajender S Varma
- Chemical Methods and Treatment Branch, Water Infrastructure Division, Center for Environmental Solutions and Emergency Response, U. S. Environmental Protection Agency, 26 West Martin Luther King Drive, Cincinnati, OH, 45268, USA; Regional Centre of Advanced Technologies and Materials, Palacký University in Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic.
| |
Collapse
|
33
|
Ammonium thiocyanate functionalized graphene oxide-supported nanoscale zero-valent iron for adsorption and reduction of Cr(VI). J Colloid Interface Sci 2020; 580:345-353. [DOI: 10.1016/j.jcis.2020.07.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 06/22/2020] [Accepted: 07/04/2020] [Indexed: 11/22/2022]
|
34
|
|
35
|
Magnetic nanoparticles for the recovery of uranium from sea water: Challenges involved from research to development. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.07.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
36
|
Dong Z, Zhang Z, Zhou R, Dong Y, Wei Y, Zheng Z, Wang Y, Dai Y, Cao X, Liu Y. Facile construction of Fe, N and P co-doped carbon spheres by carbothermal strategy for the adsorption and reduction of U(vi). RSC Adv 2020; 10:34859-34868. [PMID: 35514430 PMCID: PMC9056867 DOI: 10.1039/d0ra06252a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 08/17/2020] [Indexed: 11/28/2022] Open
Abstract
In this work, nitrogen and phosphorus co-doped magnetic carbon spheres encapsulating well-dispersed active Fe nanocrystals (Fe/P-CN) were fabricated via a simple copolymer pyrolysis strategy. Benefiting from heteroatoms doping, Fe/P-CN could primarily adsorb soluble U(vi) ions through abundant functional groups, and subsequently, the adsorbed U(vi) could be reduced to insoluble U(iv) by Fe nanocrystals. Fe/P-CN pyrolyzed at 800 °C (Fe/P-CN-800) exhibited excellent U(vi) removal capacity of 306.76 mg g−1, surpassing nitrogen and phosphorus co-doped carbon spheres and nano zero-valent iron. In addition, the magnetic separation and thermal reactivation properties endow Fe/P-CN-800 with excellent reusability. This research, especially, provides a promising synergistic adsorption and reduction strategy to effectively remove U(vi) using heteroatom-doped composites. The constructed novel magnetic carbon sphere co-doped by N, P, Fe (Fe/P-CN) exhibits high U(vi) removal efficiency, excellent magnetic separation and reusability, evidencing the potential practical applications in environmental remediation.![]()
Collapse
Affiliation(s)
- Zhimin Dong
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Zhibin Zhang
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Runze Zhou
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Yayu Dong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 P. R. China
| | - Yuanyuan Wei
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Zhijian Zheng
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Youqun Wang
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Ying Dai
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Xiaohong Cao
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| | - Yunhai Liu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang Jiangxi 330013 P. R. China
| |
Collapse
|
37
|
Zhu K, Song G, Ren X, Chen C. Solvent-free engineering of Fe0/Fe3C nanoparticles encased in nitrogen-doped carbon nanoshell materials for highly efficient removal of uranyl ions from acidic solution. J Colloid Interface Sci 2020; 575:16-23. [DOI: 10.1016/j.jcis.2020.04.091] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/18/2020] [Accepted: 04/21/2020] [Indexed: 12/17/2022]
|
38
|
Xie Y, Fang Q, Li M, Wang S, Luo Y, Wu X, Lv J, Tan W, Wang H, Tan K. Low concentration of Fe(II) to enhance the precipitation of U(VI) under neutral oxygen-rich conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 711:134827. [PMID: 32000325 DOI: 10.1016/j.scitotenv.2019.134827] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/19/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Immobilization of U(VI) by naturally ubiquitous ferrous ions (Fe(II)) has been considered as an efficient and ecofriendly method to retard the migration of aqueous U(VI) at many nuclear sites and surface environments. In this study, we conducted Fe-U coprecipitation experiments to investigate the mechanism and stability of uranium (U) precipitation induced by a small quantity of Fe(II) under oxygen-rich conditions. The experimental results suggest that the sedimentation rates of U(VI) by Fe(II) under neutral oxygen-rich conditions are more than 96%, which are about 36% higher than those without Fe(II) and 16% higher than those under oxygen-free conditions. The Fe-U coprecipitates were observed to remain stable under slightly acidic to neutral and oxygen-rich conditions. Fe(II) primarily settles down as low-crystalline iron oxide hydroxide. U(VI) mainly precipitates as three forms: 16-20% of U forms uranyl hydroxide and metaschoepite, which is absorbed on the surface of the solids; 52-56% of U is absorbed as discrete uranyl phases at the internal pores of iron oxide hydroxide; and 27-29% of U is probably incorporated into the FeO(OH) structure as U(V) and U(VI). The U(V) generated via one-electron reduction is somewhat resistant to the oxidation of O2 and the acid dissolution. In addition, nearly 70% of U and only about 15% of Fe could be extracted in 24 h by a hydrochloric acid solution with the H+ concentration ([H+]) of 0.01 M, revealing that U(VI) immobilization by low concentration of Fe(II) combined with O2 has potential applications in the separation and recycling of aqueous uranium.
Collapse
Affiliation(s)
- Yanpei Xie
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China
| | - Qi Fang
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China.
| | - Mi Li
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Sainan Wang
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China
| | - Yingfeng Luo
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China
| | - Xiaoyan Wu
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Junwen Lv
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Wenfa Tan
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Hongqiang Wang
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Kaixuan Tan
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China
| |
Collapse
|
39
|
Liu W, Zhang L, Chen F, Wang H, Wang Q, Liang K. Efficiency and mechanism of adsorption of low-concentration uranium from water by a new chitosan/aluminum sludge composite aerogel. Dalton Trans 2020; 49:3209-3221. [DOI: 10.1039/c9dt04670d] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel chitosan/aluminum sludge composite aerogel was fabricated. It's capacity was up to 434.64 mg g−1. It has good selectivity for U(vi) when multiple ions coexist. U(vi) uptake was due to surface complexation.
Collapse
Affiliation(s)
- Wenjie Liu
- School of Resource & Environment and Safety Engineering
- University of South China
- Hengyang 421001
- China
| | - Lieyu Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Fengming Chen
- School of Resource & Environment and Safety Engineering
- University of South China
- Hengyang 421001
- China
| | - Hongqiang Wang
- School of Resource & Environment and Safety Engineering
- University of South China
- Hengyang 421001
- China
- Hengyang Key Laboratory of Soil Pollution Control and Remediation
| | - Qingliang Wang
- School of Resource & Environment and Safety Engineering
- University of South China
- Hengyang 421001
- China
| | - Kunqian Liang
- School of Resource & Environment and Safety Engineering
- University of South China
- Hengyang 421001
- China
| |
Collapse
|
40
|
Adsorption of uranium(VI) from aqueous solution by novel dibutyl imide chelating resin. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06949-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|