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Chan K, Zinchenko A. Functional upcycling of waste PET plastic to the hybrid magnetic microparticles adsorbent for cesium removal. CHEMOSPHERE 2024; 354:141725. [PMID: 38492679 DOI: 10.1016/j.chemosphere.2024.141725] [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: 12/26/2023] [Revised: 03/03/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
Accumulation of mismanaged plastic in the environment and the appearance of emerging plastic-derived pollutants such as microplastics strongly demand technologies for waste plastic utilization. In this study, polyethylene terephthalate (PET) from waste plastic bottles was directly utilized to prepare a matrix of an adsorbent for cesium (Cs+) removal. The organic matrix of PET-derived oligomers obtained by aminolysis depolymerization was impregnated with bentonite clay and magnetite nanoparticles (Fe3O4 NPs), playing the roles as a major adsorptive medium for Cs+ removal and as a functional component to primarily provide efficient separation of the hybrid adsorbent from aqueous system, respectively. The obtained hybrid composite microparticles were next tested as an adsorbent for the removal of Cs+ cation from aqueous solutions. The adsorption process was characterized by fast kinetics reaching ca. 60% of the equilibrium adsorption capacity within 5 min and the maximum adsorption capacity toward Cs+ was found to be 26.8 mg/g. The adsorption process was primarily dominated by the cationic exchange in bentonite, which was not significantly affected by the admixture of the competing mono- and divalent cations (Na+, K+, and Mg2+). The proposed approach here exploits the sustainable utilization scenario of plastic waste-derived material to template complex multifunctional nanocomposites that can find applications for pollution cleaning and environmental remediation.
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Affiliation(s)
- Kayee Chan
- Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan.
| | - Anatoly Zinchenko
- Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan.
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2
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Ahmed AM, Nasser N, Rafea MA, Abukhadra MR. Effective retention of cesium ions from aqueous environment using morphologically modified kaolinite nanostructures: experimental and theoretical studies. RSC Adv 2024; 14:3104-3121. [PMID: 38249663 PMCID: PMC10797332 DOI: 10.1039/d3ra08490f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Kaolinite can undergo a controlled morphological modification process into exfoliated nanosilicate sheets (EXK) and silicate nanotubes (KNTs). The modified structures were assessed as potential effective adsorbents for the retention of Cs+ ions. The impact of the modification process on the retention properties was assessed based on conventional and advanced equilibrium studies, considering the related steric and energetic functions. The synthetic KNTs exhibit a retention capacity of 249.7 mg g-1 as compared to EXK (199.8 mg g-1), which is significantly higher than raw kaolinite (73.8 mg g-1). The kinetic modeling demonstrates the high effectiveness of the pseudo-first-order kinetic model (R2 > 0.9) to illustrate the sequestration reactions of Cs+ ions by K, EXK, and KNTs. The enhancement effect of the modification processes can be illustrated based on the statistical investigations. The presence of active and vacant receptors enhanced greatly from 19.4 mg g-1 for KA to 40.8 mg g-1 for EXK and 46.9 mg g-1 for KNTs at 298 K. This validates the significant impact of the modification procedures on the specific surface area, reaction interface, and reacting chemical groups' exposure. This also appeared in the enhancement of the reactivity of their surfaces to be able to uptake 10 Cs+ ions by KNTs and 5 ions by EXK as compared to 4 ions by kaolinite. The thermodynamic and energetic parameters (Gaussian energy < 8.6 kJ mol-1; uptake energy < 40 kJ mol-1) show that the physical processes are dominant, which have spontaneous and exothermic properties. The synthetic EXK and KNT structures validate the high elimination performance of the retention of Cs+ either in the existence of additional anions or cations.
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Affiliation(s)
- Ashour M Ahmed
- Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh 11623 Kingdom of Saudi Arabia
- Nanophotonics and Applications Lab, Physics Department, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
| | - Nourhan Nasser
- Geology Department, Faculty of Science, Beni-Suef University Beni Suef City Egypt +20-1288447189
- Materials Technologies and Their Applications Lab, Faculty of Science, Beni-Suef University Beni Suef City Egypt
| | - M Abdel Rafea
- Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh 11623 Kingdom of Saudi Arabia
| | - Mostafa R Abukhadra
- Geology Department, Faculty of Science, Beni-Suef University Beni Suef City Egypt +20-1288447189
- Materials Technologies and Their Applications Lab, Faculty of Science, Beni-Suef University Beni Suef City Egypt
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Wang J, Zhang J, Ni S, Xing H, Meng Q, Bian Y, Xu Z, Rong M, Liu H, Yang L. Cation-Intercalated Lamellar MoS 2 Adsorbent Enables Highly Selective Capture of Cesium. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49095-49106. [PMID: 37820001 DOI: 10.1021/acsami.3c08848] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Highly selective capture of cesium (Cs+) from complex aqueous solutions has become increasingly important owing to its (133Cs) indispensable role in some cutting-edge technologies and the environmental mobility of radioactive nuclide (137Cs) from nuclear wastewater. Herein, we report the development of cation-intercalated lamellar MoS2 as an effective Cs+ adsorbent with the advantages of facile synthesis and highly tunable layer spacing. Two types of cations, including Na+ and NH4+, were employed for the intercalations between adjacent layers of MoS2. The results demonstrated that the adsorption capacity of the NH4+-intercalated material (M-NH4+, 134 mg/g) for Cs+ clearly outperformed the others due to higher loading percentages of cations and larger layer spacing. The cesium partition coefficients for M-NH4+ in the presence of 100-fold competing ions all exceed 1 × 103 mL/g. A simulated complex aqueous solution containing 15.37 mg/L Cs+ and highly excess of competing ions Li+, Na+, K+, Mg2+, and Ca2+ (20-306 times higher) was introduced to prove the practical application potential using our best-performing M-NH4+, showing a good to excellent partition ability of Cs+ among other cations, especially for Cs/K and Cs/Na with separation factors of 58 and 212, respectively. The adsorption and selectivity mechanisms were clearly elucidated using various advanced techniques, such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. These results revealed that the good selectivity for Cs+ can be ascribed to the differences in Lewis acidities, hydration energy, cation sizes, and in particular, the divergence of coordination modes which was successfully achieved after tuning the layer distance via the cation intercalation strategy. In addition, the material has fast kinetics (<30 min), wide range of pH tolerance (4-10), and good reusability. Overall, our studies point out that the tunable lamellar MoS2-based materials are promising adsorbents for Cs+ capture and separation.
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Affiliation(s)
- Jing Wang
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jianfeng Zhang
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Shan Ni
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Huifang Xing
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qiyu Meng
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yangyang Bian
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zihao Xu
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Meng Rong
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Huizhou Liu
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Liangrong Yang
- Key Laboratory of Green and High-End Utilization of Salt Lake Resources, State Key Laboratory of Biochemical Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
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Salih KAM, Zhou K, Hamza MF, Mira H, Wei Y, Ning S, Guibal E, Salem WM. Phosphonation of Alginate-Polyethyleneimine Beads for the Enhanced Removal of Cs(I) and Sr(II) from Aqueous Solutions. Gels 2023; 9:gels9020152. [PMID: 36826322 PMCID: PMC9957171 DOI: 10.3390/gels9020152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/15/2023] Open
Abstract
Although Cs(I) and Sr(II) are not strategic and hazardous metal ions, their recovery from aqueous solutions is of great concern for the nuclear industry. The objective of this work consists of designing a new sorbent for the simultaneous recovery of these metals with selectivity against other metals. The strategy is based on the functionalization of algal/polyethyleneimine hydrogel beads by phosphonation. The materials are characterized by textural, thermo-degradation, FTIR, elemental, titration, and SEM-EDX analyses to confirm the chemical modification. To evaluate the validity of this modification, the sorption of Cs(I) and Sr(II) is compared with pristine support under different operating conditions: the pH effect, kinetics, and isotherms are investigated in mono-component and binary solutions, before investigating the selectivity (against competitor metals) and the possibility to reuse the sorbent. The functionalized sorbent shows a preference for Sr(II), enhanced sorption capacities, a higher stability at recycling, and greater selectivity against alkali, alkaline-earth, and heavy metal ions. Finally, the sorption properties are compared for Cs(I) and Sr(II) removal in a complex solution (seawater sample). The combination of these results confirms the superiority of phosphonated sorbent over pristine support with promising performances to be further evaluated with effluents containing radionuclides.
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Affiliation(s)
- Khalid A. M. Salih
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Kanggen Zhou
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Mohammed F. Hamza
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
- Nuclear Materials Authority, POB 530, El-Maadi, Cairo 11728, Egypt
- Correspondence: (M.F.H.); (E.G.); Tel.: +20-1116681228 (M.F.H.); +33-(0)466782734 (E.G.)
| | - Hamed Mira
- Nuclear Materials Authority, POB 530, El-Maadi, Cairo 11728, Egypt
| | - Yuezhou Wei
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
- School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shunyan Ning
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
| | - Eric Guibal
- Polymers Composites and Hybrids (PCH), IMT Mines Ales, CEDEX, F-30319 Alès, France
- Correspondence: (M.F.H.); (E.G.); Tel.: +20-1116681228 (M.F.H.); +33-(0)466782734 (E.G.)
| | - Waheed M. Salem
- Medical Labs Department, Faculty of Applied Health Science Technology, Menoufia University, Shebine El-Koam 6131567, Egypt
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Huang T, Song D, Yang C, Zhang SW. Nonthermal plasma-irradiated polyvalent ferromanganese binary hydro(oxide) for the removal of uranyl ions from wastewater. ENVIRONMENTAL RESEARCH 2023; 217:114911. [PMID: 36427641 DOI: 10.1016/j.envres.2022.114911] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
Nonthermal plasma (NTP) irradiation was employed to adjust the morphological structures and valence distribution of ferromanganese (Fe-Mn)-based binary hydro (oxide) to enhance the heterogeneous adsorption of uranyl ions. The output voltage and the liquid-plate distance played a more vital role among the NTP factors in the irradiation system in influencing the polyvalent Fe-Mn binary hydro (oxide) (poly-Fe-Mn). The formation of plates, flakes, and nanoscale nodules was specifically observed, which caused more pores and fractures in the poly-Fe-Mn binary hydro (oxide). The poly-Fe-Mn performed explicitly better in the adsorption of uranium ions in comparison with the counterpart of the Fe-Mn, which was appropriately fitted by the pseudofirst-order kinetic and Elovich models. Maximum equilibrium adsorption capacities of 663.92 and 923.45 mg/g were obtained for the Fe-Mn and poly-Fe-Mn binary hydro (oxides) toward U ions in the orthogonal design, respectively. The maximum monolayer adsorption capacity achieved by the fitting of the Langmuir model was 1091.10 mg/g. Both physisorption and chemisorption contributed to the heterogeneous process of the poly-Fe-Mn toward uranium ions. The employment of NTP irradiation changed the monolayer adsorption of the traditional Fe-Mn materials and diversified the reaction mechanisms between the interface of the Fe-Mn materials and uranium ions. The elements, including O, N, and U exhibited higher compatibility and overlapped in the samples. The highly effective capture of uranium ions from the solution by the poly-Fe-Mn binary hydro (oxide) was mainly related to the chemical deposition of O and N radicals.
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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.
| | - Dongping Song
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Chunhai Yang
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Shu-Wen Zhang
- Nuclear Resources Engineering College, University of South China, 421001, China
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Nazari MT, Schnorr C, Rigueto CVT, Alessandretti I, Melara F, da Silva NF, Crestani L, Ferrari V, Vieillard J, Dotto GL, Silva LFO, Piccin JS. A review of the main methods for composite adsorbents characterization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:88488-88506. [PMID: 36334205 DOI: 10.1007/s11356-022-23883-z] [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: 07/14/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
Adsorption is a promising technology for removing several contaminants from aqueous matrices. In the last years, researchers worldwide have been working on developing composite adsorbents to overcome some limitations and drawbacks of conventional adsorbent materials, which depend on various factors, including the characteristics of the adsorbents. Therefore, it is essential to characterize the composite adsorbents to describe their properties and structure and elucidate the mechanisms, behavior, and phenomenons during the adsorption process. In this sense, this work aimed to review the main methods used for composite adsorbent characterization, providing valuable information on the importance of these techniques in developing new adsorbents. In this paper, we reviewed the following methods: X-Ray diffraction (XRD); spectroscopy; scanning electron microscopy (SEM); N2 adsorption/desorption isotherms (BET and BJH methods); thermogravimetry (TGA); point of zero charge (pHPZC); elemental analysis; proximate analysis; swelling and water retention capacities; desorption and reuse.
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Affiliation(s)
- Mateus T Nazari
- Graduate Program in Civil and Environmental Engineering (PPGEng), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Carlos Schnorr
- Universidad De La Costa, Calle 58 # 55-66, 080002, Barranquilla, Atlántico, Colombia
| | - Cesar V T Rigueto
- Graduate Program in Food Science and Technology (PPGCTA), Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Ingridy Alessandretti
- Graduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Flávia Melara
- Graduate Program in Civil and Environmental Engineering (PPGEng), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Nathália F da Silva
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Larissa Crestani
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Valdecir Ferrari
- Graduate Program in Metallurgical, Materials, and Mining Engineering (PPG3M), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Julien Vieillard
- CNRS, INSA Rouen, UNIROUEN, COBRA (UMR 6014 and FR 3038), Normandie University, Evreux, France
| | - Guilherme L Dotto
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
| | - Luis F O Silva
- Universidad De La Costa, Calle 58 # 55-66, 080002, Barranquilla, Atlántico, Colombia
| | - Jeferson S Piccin
- Graduate Program in Civil and Environmental Engineering (PPGEng), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
- Graduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
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Abd El-Aziz ME, Morsi SMM, Kamal KH, Khattab TA. Preparation of Isopropyl Acrylamide Grafted Chitosan and Carbon Bionanocomposites for Adsorption of Lead Ion and Methylene Blue. Polymers (Basel) 2022; 14:polym14214485. [PMID: 36365479 PMCID: PMC9656127 DOI: 10.3390/polym14214485] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/11/2022] [Accepted: 10/20/2022] [Indexed: 01/11/2023] Open
Abstract
Wastewater, which is rich with heavy elements, dyes, and pesticides, represents one of the most important environmental pollutants. Thus, it has been significant to fabricate environmentally friendly polymers with high adsorption ability for those pollutants. Herein, crosslinked chitosan (C-Cs) was prepared using isopropyl acrylamide and methylene bisacrylamide. Carbon nanoparticles (C-NPs) were also obtained by the treatment of the agricultural wastes, which was used with C-Cs to prepare C-Cs/C-NPs nanocomposite (C-Cs/C-NC). Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and transmission electron microscope (TEM) were used to investigate the prepared adsorbent. C-Cs, C-NPs, and C-Cs/C-NC were used in water treatment for the adsorption of lead ions (Pb+2) and methylene blue (MB). The adsorption process occurred by the prepared samples was investigated under different conditions, including contact time, as well as different doses and concentrations of adsorbents. The findings exhibited that the adsorption of Pb+2 and MB by C-Cs/C-NC was higher than C-Cs and C-NPs. In addition, the kinetic and isotherm models were studied, where the results showed that the adsorption of Pb+2 and MB by various adsorbents obeys pseudo-second-order and Langmuir isotherms, respectively.
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Affiliation(s)
- Mahmoud Essam Abd El-Aziz
- Polymer and Pigments Department, National Research Centre, 33 El Bohoth St., Dokki, Giza P.O. Box 12622, Egypt
| | - Samir M. M. Morsi
- Polymer and Pigments Department, National Research Centre, 33 El Bohoth St., Dokki, Giza P.O. Box 12622, Egypt
| | - Kholod H. Kamal
- Water Pollution Research Department, National Research Centre, 33 El Bohouth St., Dokki, Giza P.O. Box 12622, Egypt
| | - Tawfik A. Khattab
- Dyeing, Printing and Auxiliaries Department, National Research Centre, 33 El Bohoth St., Dokki, Giza P.O. Box 12622, Egypt
- Correspondence: ; Tel.: +20-1011014356
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Li R, Yan H, Wang H, Yan J, Jiang C, Wang Y, Xu T. Electrodialysis for the volume reduction of the simulated radionuclides containing seawater. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129601. [PMID: 35863228 DOI: 10.1016/j.jhazmat.2022.129601] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
In this study, electrodialysis (ED) was performed to concentrate the radionuclides containing seawater for volume minimization. The concentration behaviors of the trace radioactive elements were also explored. Under the optimal voltage drop of 6 V and the volume ratio of 1:40, the concentration times of Cs+, Co2+, Sr2+ and I- could reach 9.9, 9.5, 20.1 and 32.5, respectively. Furthermore, it enabled over 80% volume reduction and over 90% removal of all hazardous radionuclides. Hence, ED is a feasible and promising method to manage the radioactive wastewater due to its high concentration and decontamination performances. For identical ion contents, the concentration rate for the cations presented the order of Na+ > Cs+ > Sr2+ > Co2+; the hydration radius and hydration free energy played the dominant roles in ion concentration. In contrast, for the ED concentration of trace radioactive elements, of which the contents are several magnitudes lower than the predominant salt concentration, the concentration rate presented the order of Sr2+ > Cs+ > Co2+ > Na+; the specific charge began to play an important role when the predominant ion approached its saturated salt concentration. For the anions, I- always migrated faster than Cl- at diverse concentrations.
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Affiliation(s)
- Ruirui Li
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Haiyang Yan
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Huangying Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Junying Yan
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Chenxiao Jiang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Yaoming Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
| | - Tongwen Xu
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
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Jiang Z, Liu G, Ma C, Guo Y, Duo J, Li M, Deng T. Cesium removal from wastewater: High-efficient and reusable adsorbent K 1.93Ti 0.22Sn 3S 6.43. CHEMOSPHERE 2022; 305:135406. [PMID: 35728662 DOI: 10.1016/j.chemosphere.2022.135406] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/26/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Efficient and quick removal of radioactive Cs+ from wastewater is significant for the safe use of nuclear energy and human health. A novel adsorbent K1.93Ti0.22Sn3S6.43 (KTSS) was developed for Cs+ removal from complex natural water systems. The working mechanism of KTSS for removing Cs+ was the synergistic effect of ion exchange and the Cs⋯S binding, which was proved by several characterization techniques. KTSS showed ultrafast kinetics for Cs+ adsorption within 1 min with a removal rate of 99%. Meanwhile, KTSS exhibited a higher adsorption capacity of 450.12 mg/g than many other adsorbents to remove Cs+ and possessed excellent chemical stability in a wide pH range of 3-12. Thanks to the natural affinity arising from the S2- ligands, KTSS displayed excellent selectivity for Cs+ even in different complex water systems. The separation factors between Cs+ and the coexisting ions of Na+, K+, Mg2+, Ca2+ were ranged from 408.61 to 7448.20. Fortunately, by eluting with NaNO3 the adsorbent could realize the green regeneration and cyclic utilization. Furthermore, it was found that KTSS had tremendous advantages in the removal of Cs+ in comparison with the other adsorbents. Consequently, it should be considered that KTSS obtained in this study has great potential in applying ultrafast and high-efficient removal of Cs+ from wastewater.
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Affiliation(s)
- Zhenzhen Jiang
- Central Laboratory of Geological Mineral Exploration and Development Bureau of Tibet Autonomous Region, Tibet, 850033, PR China; Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science at Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Gaoling Liu
- Central Laboratory of Geological Mineral Exploration and Development Bureau of Tibet Autonomous Region, Tibet, 850033, PR China
| | - Chi Ma
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science at Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Yafei Guo
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science at Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Ji Duo
- Central Laboratory of Geological Mineral Exploration and Development Bureau of Tibet Autonomous Region, Tibet, 850033, PR China
| | - Mingli Li
- Central Laboratory of Geological Mineral Exploration and Development Bureau of Tibet Autonomous Region, Tibet, 850033, PR China.
| | - Tianlong Deng
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science at Tianjin University of Science and Technology, Tianjin, 300457, PR China.
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10
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Synthesis of boron carbon nitride layers for the adsorption of hazardous basic dye from aqueous solutions. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04798-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Bilgi M, Ugraskan V, Isik B. Biosorption studies of methylene blue dye using NaOH-treated Aspergillus niger-filled sodium alginate microbeads. CHEM ENG COMMUN 2022. [DOI: 10.1080/00986445.2022.2103685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Mesut Bilgi
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
| | - Volkan Ugraskan
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
| | - Birol Isik
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
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12
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A Sequenced Study of Improved Dielectric Properties of Carbon Nanotubes and Metal Oxide-Reinforced Polymer Composites. MATERIALS 2022; 15:ma15134592. [PMID: 35806717 PMCID: PMC9267293 DOI: 10.3390/ma15134592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 01/09/2023]
Abstract
Polymers have gained attraction at the industrial level owing to their elastic and lightweight nature, as well as their astonishing mechanical and electrical applications. Their scope is limited due to their organic nature, which eventually leads to the degradation of their properties. The aim of this work was to produce polymer composites with finely dispersed metal oxide nanofillers and carbon nanotubes (CNTs) for the investigation of their charge-storage applications. This work reports the preparation of different polymeric composites with varying concentrations of metal oxide (MO) nanofillers and single-walled carbon nanotubes (SWCNTs). The successful synthesis of nanofillers (i.e., NiO and CuO) was carried out via the sonication and precipitation methods, respectively. After, the smooth and uniform polymeric composite thin films were prepared via the solution-casting methodology. Spectroscopy and diffraction techniques were used for the preliminary characterization. Scanning electron microscopy was used to check the dispersion of carbon nanotubes (CNTs) and MOs in the polymer matrix. The addition of nanofillers and carbon nanotubes (CNTs) tuned the bandgap, reduced the strain, and enhanced the elastic limit of the polymer. The addition of CNT enhanced the mechanical strength of the composite; however, it increased the conductivity, which was tuned by using metal oxides. By increasing the concentration of NiO and CuO from 2% to 6% bandgap of PVA, which is 5–6 eV reduced to 4.41 and 4.34 eV, Young’s moduli of up to 59 and 57.7 MPa, respectively, were achieved. Moreover, improved dielectric properties were achieved, which shows that the addition of metal oxide enhances the dielectric behavior of the material.
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13
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Some synthesis aspects for poorly crystalline porous sodium titanium silicate. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04691-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Farooq S, Chen B, Ahmad S, Muhammad I, Hussain Q, Wu H. Room-Temperature, Ionic-Liquid-Enhanced, Beta-Cyclodextrin-Based, Molecularly Imprinted Polymers for the Selective Extraction of Abamectin. NANOMATERIALS 2022; 12:nano12061017. [PMID: 35335830 PMCID: PMC8953458 DOI: 10.3390/nano12061017] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/14/2022] [Accepted: 03/18/2022] [Indexed: 12/23/2022]
Abstract
To ensure environmental protection and food quality and safety, the trace level detection of pesticide residues with molecularly imprinted polymers using a more economic, reliable, and greener approach is always demanded. Herein, novel, enhanced, imprinted polymers based on beta-cyclodextrin, using room-temperature, ionic liquid as a solvent for abamectin were developed with a simple polymerization process. The successful synthesis of the polymers was verified, with morphological and structural characterization performed via scanning electron microscope analysis, nitrogen adsorption experiments, and thermogravimetric analysis. The imprinted polymers showed good adsorption ability, which was confirmed with a pseudo-second-order kinetic model and a Langmuir isotherm model, as they exhibit a theoretical adsorption of 15.08 mg g−1 for abamectin. The polymers showed high selectivity for abamectin and significant reusability without significant performance loss. The MIPs were used to analyze abamectin in spiked apple, banana, orange, and grape samples, and as a result, a good recovery of 81.67−101.47%, with 1.26−4.36% relative standard deviation, and limits of detection and quantitation of 0.02 µg g−1 and 0.05 µg g−1, respectively, was achieved within a linear range of 0.03−1.50 µg g−1. Thus, room-temperature, ionic-liquid-enhanced, beta-cyclodextrin-based, molecularly imprinted polymers for the selective detection of abamectin proved to be a convenient and practical platform.
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Affiliation(s)
- Saqib Farooq
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China; (S.F.); (B.C.); (S.A.); (I.M.)
| | - Bochang Chen
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China; (S.F.); (B.C.); (S.A.); (I.M.)
| | - Shakeel Ahmad
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China; (S.F.); (B.C.); (S.A.); (I.M.)
| | - Ihsan Muhammad
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China; (S.F.); (B.C.); (S.A.); (I.M.)
| | - Quaid Hussain
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, 666 Wusu Street, Hangzhou 311300, China;
| | - Haiyan Wu
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China; (S.F.); (B.C.); (S.A.); (I.M.)
- Correspondence:
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15
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Fu J, Zhang L, Wang SL, Yuan WL, Zhang GH, Zhu QH, Chen H, He L, Tao GH. Ultralow-cost portable device for cesium detection via perovskite fluorescence. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:127981. [PMID: 34883380 DOI: 10.1016/j.jhazmat.2021.127981] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 11/21/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
Public anxiety and concern from cesium pollution in oceans have been back on the agenda since tons of nuclear waste water were announced to be poured into oceans. Cesium ion can easily enter organisms and bioaccumulate in animals and plants, thus its harm is chronic to humans through food chains. Here we showed a kind of hybrid ionic liquid membrane (HILM) for detection of cesium ion in seawater through CsPbBr3 perovskite fluorescence. With sustainability in mind, HILM was built frugally. The lowest cost of HILM is below 3 cents per piece. The HILM can detect cesium ion quickly with eye-readable fluorescence signal. Ultracheap, portable, easy-to-use on-site detection device could offer benefit for personal security and applications in environment science and ecology in the future decades.
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Affiliation(s)
- Jie Fu
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Lei Zhang
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Shuang-Long Wang
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Wen-Li Yuan
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Guo-Hao Zhang
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Qiu-Hong Zhu
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Hao Chen
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Ling He
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Guo-Hong Tao
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China.
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16
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Huang T, Song D, Zhou L, Tao H, Li A, Zhang SW, Liu LF. Non-thermal plasma irradiated polyaluminum chloride for the heterogeneous adsorption enhancement of Cs + and Sr 2+ in a binary system. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127441. [PMID: 34673396 DOI: 10.1016/j.jhazmat.2021.127441] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 10/02/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
The natural ecosystem will continually deteriorate for decades by the leakage of Cs and Sr isotopes. The exploration of the new materials or techniques for the efficient treatment of radioactive wastewater is critically important. In this study, a dielectric barrier discharge (DBD) configuration was constructed to operate the non-thermal plasma (NTP). The NTP was incorporated into the synthesis of polyaluminum chloride (PAC) in two different procedures to intensify the synthesis of PAC (NTP-PAC) and enhance the further removal of Cs and Sr from wastewater. The employment of NTP in two procedures both had significantly changed the physicochemical characteristics of PAC materials, which facilitated the further adsorption application of NTP-PAC on the treatment of Cs+ and Sr2+. Different molecular, morphological, and adsorption characteristics were confirmed to the NTP-PAC materials. The heterogeneous adsorption of the NTP-PAC can be appropriately fitted by both the pseudo-first-order kinetic model and the Elovich model. Both physisorption and chemisorption reaction mechanisms were ensured for the heterogeneous adsorption of the NTP-PAC material towards Cs+ and Sr2+, which guaranteed the excellent adsorption performance of NTP-PAC materials compared to PAC. The electron collisions caused by NTP with alum pulp created highly reactive growth precursors and intensified the nucleation and hydrolysis polymerization of PAC. The employment of NTP explicitly broadens the reaction pathways between PAC and cationic contaminants in the aqueous environment, which expands the application area of PAC materials in environmental sustainability.
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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.
| | - Dongping Song
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Lulu Zhou
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Hui Tao
- Chongqing Water Affairs Group Co., Ltd., No. 1, Longjiawan, Yuzhong District, Chongqing 400000, China
| | - Aiyin Li
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Shu-Wen Zhang
- Nuclear Resources Engineering College, University of South China, 421001, China
| | - Long-Fei Liu
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
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17
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Luan L, Tang B, Liu Y, Xu W, Liu Y, Wang A, Niu Y. Direct Synthesis of Sulfur-Decorating PAMAM Dendrimer/Mesoporous Silica for Enhanced Hg(II) and Cd(II) Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:698-710. [PMID: 34991310 DOI: 10.1021/acs.langmuir.1c02547] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Water security caused by heavy metals poses a deleterious hazard to public health and the ecological system. The construction of adsorbents by polyamidoamine (PAMAM) dendrimers for efficient removal of metal ions has attracted considerable interest. However, the general method for the fabrication of these adsorbents was achieved by the surface chemical modification of the substrates with PAMAM dendrimer, which usually causes the defects of low density and uneven distribution of the dendrimer, the blocking of pores, and reducing the adsorption performance. Hence, the development of a new method for preparation of PAMAM dendrimer-based adsorbent to realize the efficient and enhanced adsorption of metal ions is still a challenge. Herein, methylisothiocyanate decorated PAMAM dendrimer/mesoporous silica composites (G0-S-1/x, G1.0-S-1/x, G2.0-S-1/x, x = 2, 4, 6, 8, 10) were synthesized by the direct sol-gel reaction of alkoxysilyl-containing functional PAMAM dendrimer. The adsorbents display enhanced adsorption property for Hg(II) and Cd(II) as compared with the same adsorbents which were prepared by traditional chemical modification method. Take G2.0-S-1/2 as an example, the maximum adsorption capacities are 2.41 and 0.87 mmol·g-1 for Hg(II) and Cd(II), respectively . Moreover, the adsorbents show excellent selective adsorption and regeneration property. G2.0-S-1/2 displays distinct selectivity for Hg(II) with the presence of Co(II), Pb(II), Cd(II), and Cu(II). The regeneration percentage still maintains 95.2% after five adsorption-desorption cycles. The adsorption mechanism is also certified by the experimental method and theoretical calculation.
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Affiliation(s)
- Liping Luan
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Bentian Tang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Yi Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Wenlong Xu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Yongfeng Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Aili Wang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Yuzhong Niu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
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18
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Heybet EN, Ugraskan V, Isik B, Yazici O. Adsorption of methylene blue dye on sodium alginate/polypyrrole nanotube composites. Int J Biol Macromol 2021; 193:88-99. [PMID: 34688676 DOI: 10.1016/j.ijbiomac.2021.10.084] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 12/01/2022]
Abstract
Nanomaterials have recently come to the fore as potential adsorbents due to their high surface, high efficiency, and adsorption capacity. This study the performance of polypyrrole nanotube incorporated sodium alginate (SA/PPyNT) on the adsorptive removal of methylene blue dye from an aqueous solution was investigated. Firstly, polypyrrole nanotubes were synthesized by oxidative chemical polymerization. Then, polypyrrole nanotubes were added to the sodium alginate gel and the composite beads were prepared by a crosslinking process in a 3% CaCl2 solution. The composite beads were characterized using Fourier transform infrared-attenuated total reflectance (FTIR-ATR), scanning electron microscope (SEM), and atomic force microscopy analyzes. In the adsorption studies, to determine the optimum conditions, experiments were carried out at different conditions namely temperature (25-45 °C), contact time, initial pH (2-12), adsorbent dosage (1-5 g/L), dye concentrations (10-50 mg/L). The studies indicated that the removal percentage of MB reached up to 90.5% at pH = 7 and 25 °C. Furthermore, different isotherm models such as Freundlich, Langmuir, D-R, and Harkins-Jura were applied. Considering the correlation coefficients, the Langmuir isotherm model was found to be the most suitable model (r2 = 0.9974). The adsorption capacity showed the maximum at 666.7 mg/g in pH = 7 at 25 °C. As a result of the kinetic studies, it was seen that adsorption followed the pseudo-second-order kinetic model (r2 = 0.9976). When thermodynamic parameters were examined, it was seen that the adsorption occurred exothermically (∆HA = - 68.1 kJ/mol) and spontaneously (∆GA298 = - 27.4 kJ/mol). From the data obtained, it was concluded that the SA/PPyNT composites are promising material as an adsorbent.
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Affiliation(s)
- Ezgi Nur Heybet
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Volkan Ugraskan
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Birol Isik
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Ozlem Yazici
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey.
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19
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Eun S, Ryu J, Kim H, Hong HJ, Kim S. Simultaneous removal of radioactive cesium and strontium from seawater using a highly efficient Prussian blue-embedded alginate aerogel. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 297:113389. [PMID: 34325366 DOI: 10.1016/j.jenvman.2021.113389] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/07/2021] [Accepted: 07/24/2021] [Indexed: 06/13/2023]
Abstract
Radioactive cesium (137Cs) and strontium (90Sr) contaminants in seawater have been a serious problem since the Fukushima accident in 2011 due to their long-term health risks. For the effective and simultaneous removal of radioactive cesium (137Cs) and strontium (90Sr) from seawater, a Prussian blue (PB)-immobilized alginate aerogel (PB-alginate aerogel) was fabricated and its adsorption performance was evaluated. PB nanoparticles were homogeneously dispersed in the three-dimensional porous alginate aerogel matrix, which enabled facile contact with seawater. The PB-alginate aerogel exhibited Cs+ and Sr2+ adsorption capacities of 19.88 and 20.10 mg/g, respectively, without substantial interference because Cs+ and Sr2+ adsorption occurred at different adsorption sites on the composite. The Cs+ and Sr2+ adsorption onto the PB-alginate aerogel was completed within 3 h due to the highly porous morphology of the aerogel. The Cs+ and Sr2+ adsorption behaviors on the PB-alginate aerogel were systematically investigated under various conditions. Compared with Cs+ adsorption, Sr2+ adsorption onto the PB-alginate aerogel was more strongly influenced by competing cations (Na+, Mg2+, Ca2+, and K+) in seawater. 137Cs and 90Sr removal tests in real seawater demonstrated the practical feasibility of the PB-alginate aerogel as an adsorbent.
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Affiliation(s)
- Semin Eun
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Jungho Ryu
- Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea
| | - Hyuncheol Kim
- Nuclear Emergency and Environmental Protection Division, Korea Atomic Energy Research Institute (KAERI), Daejeon, 34057, Republic of Korea; Radiochemistry and Nuclear Nonproliferation, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Hye-Jin Hong
- Department of Environmental Engineering, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea.
| | - Soonhyun Kim
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea; Department of Interdisciplinary Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea.
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20
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Huang T, Zhou L, Zhang SW, Li A. Uptake of cesium by the hydroxysulfate green rust-modified composite aluminosilicate materials, mathematical modeling, and mechanisms. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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21
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Mudhoo A, Sillanpää M. Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review. ENVIRONMENTAL CHEMISTRY LETTERS 2021; 19:4393-4413. [PMID: 34341658 PMCID: PMC8320315 DOI: 10.1007/s10311-021-01289-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/18/2021] [Indexed: 05/24/2023]
Abstract
Pure water will become a golden resource in the context of the rising pollution, climate change and the recycling economy, calling for advanced purification methods such as the use of nanostructured adsorbents. However, coming up with an ideal nanoadsorbent for micropollutant removal is a real challenge because nanoadsorbents, which demonstrate very good performances at laboratory scale, do not necessarily have suitable properties in in full-scale water purification and wastewater treatment systems. Here, magnetic nanoadsorbents appear promising because they can be easily separated from the slurry phase into a denser sludge phase by applying a magnetic field. Yet, there are only few examples of large-scale use of magnetic adsorbents for water purification and wastewater treatment. Here, we review magnetic nanoadsorbents for the removal of micropollutants, and we explain the integration of magnetic separation in the existing treatment plants. We found that the use of magnetic nanoadsorbents is an effective option in water treatment, but lacks maturity in full-scale water treatment facilities. The concentrations of magnetic nanoadsorbents in final effluents can be controlled by using magnetic separation, thus minimizing the ecotoxicicological impact. Academia and the water industry should better collaborate to integrate magnetic separation in full-scale water purification and wastewater treatment plants.
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Affiliation(s)
- Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837 Mauritius
| | - Mika Sillanpää
- Environmental Engineering and Management Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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22
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Isik B, Ugraskan V, Cankurtaran O. Effective biosorption of methylene blue dye from aqueous solution using wild macrofungus (Lactarius piperatus). SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1956540] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Birol Isik
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Volkan Ugraskan
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Ozlem Cankurtaran
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
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23
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Ugraskan V, Isik B, Yazici O. Adsorptive removal of methylene blue from aqueous solutions by porous boron carbide: isotherm, kinetic and thermodynamic studies. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1948406] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Volkan Ugraskan
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
| | - Birol Isik
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
| | - Ozlem Yazici
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
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