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Gao L, Yang H, Lu Y, Chen S, He L, Liu J. Fabrication of a magnetic functionalized chitosan hydrogel for effective extraction of aflatoxins from cereals. Food Chem 2024; 458:140215. [PMID: 38944928 DOI: 10.1016/j.foodchem.2024.140215] [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: 12/25/2023] [Revised: 05/16/2024] [Accepted: 06/22/2024] [Indexed: 07/02/2024]
Abstract
A magnetic adsorbent was synthesized by coupling magnetic nanoparticles, UiO-66-NH2 and 1-butyl-trimethylimidazole bromide ([BMIM][Br]) to chitosan (CS)-based composite conveniently. A series of modern characterizations were employed to assess its properties. The results showed that UiO-66-NH2 was uniformly distributed within the composite via in-situ growth, which can enhance the porosity obviously. The introduction of various ligands enables the composite to exhibit excellent extraction performance for four aflatoxins (AFs) through multiple interactions. The adsorption mechanism was elucidated and the main factors affecting extraction efficiency were evaluated. Under optimal conditions, the limits of detection (LODs) ranged from 0.08 to 0.56 μg/kg. The established method was successfully utilized to determine AFs from cereal samples (rice, glutinous rice, wheat, soybean, paddy, and corn) with satisfactory recovery of 77% ∼ 119% with relative standard deviations (RSDs) of 1.0% ∼ 11.7% (n = 5). The adsorbent demonstrated sufficient robustness for repeated use at least six times without obvious damage of extraction property.
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Affiliation(s)
- Li Gao
- School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, People's Republic of China.
| | - Huan Yang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, People's Republic of China
| | - Yitong Lu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, People's Republic of China
| | - Siyuan Chen
- School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, People's Republic of China
| | - Lijun He
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, People's Republic of China.
| | - Jie Liu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, People's Republic of China
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He X, Xia J, He J, Qi K, Peng A, Liu Y. Highly Efficient Capture of Heavy Metal Ions on Amine-Functionalized Porous Polymer Gels. Gels 2023; 9:gels9040297. [PMID: 37102909 PMCID: PMC10137378 DOI: 10.3390/gels9040297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023] Open
Abstract
Porous polymer gels (PPGs) are characterized by inherent porosity, a predictable structure, and tunable functionality, which makes them promising for the heavy metal ion trap in environmental remediation. However, their real-world application is obstructed by the balance between performance and economy in material preparation. Development of an efficient and cost-effective approach to produce PPGs with task-specific functionality remains a significant challenge. Here, a two-step strategy to fabricate amine-enriched PPGs, NUT-21-TETA (NUT means Nanjing Tech University, TETA indicates triethylenetetramine), is reported for the first time. The NUT-21-TETA was synthesized through a simple nucleophilic substitution using two readily available and low-cost monomers, mesitylene and α, α′-dichloro-p-xylene, followed by the successful post-synthetic amine functionalization. The obtained NUT-21-TETA demonstrates an extremely high Pb2+ capacity from aqueous solution. The maximum Pb2+ capacity, qm, assessed by the Langmuir model was as high as 1211 mg/g, which is much higher than most benchmark adsorbents including ZIF-8 (1120 mg/g), FGO (842 mg/g), 732-CR resin (397 mg/g), Zeolite 13X (541 mg/g), and AC (58 mg/g). The NUT-21-TETA can be regenerated easily and recycled five times without a noticeable decrease of adsorption capacity. The excellent Pb2+ uptake and perfect reusability, in combination with a low synthesis cost, gives the NUT-21-TETA a strong potential for heavy metal ion removal.
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Affiliation(s)
- Xue He
- College of Pharmacy, Dali University, Dali 671003, China
| | - Jumu Xia
- College of Pharmacy, Dali University, Dali 671003, China
| | - Jieli He
- College of Pharmacy, Dali University, Dali 671003, China
| | - Kezhen Qi
- College of Pharmacy, Dali University, Dali 671003, China
| | - Anzhong Peng
- College of Pharmacy, Dali University, Dali 671003, China
| | - Yong Liu
- College of Pharmacy, Dali University, Dali 671003, China
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Abbasi N, Khan SA, Khan TA, Alharthi SS. Statistical evaluation of liquid phase sequestration of acridine orange and Cr 6+ by novel mesoporous glutamic acid-g-polyacrylamide/plaster of paris/riboflavin hydrogel nanocomposite. ENVIRONMENTAL RESEARCH 2022; 213:113712. [PMID: 35718168 DOI: 10.1016/j.envres.2022.113712] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/07/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
The adsorption of acridine orange and Cr6+ ion onto plaster of paris reinforced glutamic acid-grafted-polyacrylamide hydrogel nanocomposite modified with riboflavin, Glu-g-PAM/POP/Rb HNC was studied. The Glu-g-PAM/POP/Rb HNC was physico-chemically characterized by Fourier transform infrared spectroscopy, X-ray diffraction analysis, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy, transmission electron microscopy and Brunauer-Emmett-Teller analysis. The specific surface area, pore volume and pore diameter were 15.48 m2/g, 0.015 cm3/g and 4.23 nm, respectively. Adsorption process was strategized by response surface methodology (RSM) based on a 3-level 5-factor (initial solution pH, contact time, adsorbent dose, initial adsorbate concentration and temperature) central composite design (CCD), and validity of the estimated parameters was statistically evaluated using analysis of variance (ANOVA). The optimized operating variables were: pH (AO = 10; Cr6+ = 4.15), contact time (AO = 60 min; Cr6+ = 59 min), adsorbent dose (0.8 g/L), initial adsorbate concentration (60 mg/L) and temperature (298 K). Isotherm results were coincident with Langmuir isotherm model. The experimental kinetic adsorption data was congruous with pseudo-second order model, with the uptake rate controlled by both intraparticle and liquid film diffusions. The relatively high Langmuir saturation capacity of 202.63 mg AO/g and 143.68 mg Cr6+/g, supported by the decent recyclability up to four times affirmed the promising performance of the adsorbent. The efficacy of the adsorbent for simultaneous removal of AO and Cr6+ from bi-component system was assessed. The possible adsorption mechanism mainly involved hydrogen bonding, van der Waals forces, electrostatic and π-π interactions. Adsorption of AO and Cr6+ onto Glu-g-PAM/POP/Rb HNC was feasible and exothermic as revealed by the thermodynamic parameters. The findings demonstrated superior adsorbent efficacy for the seizure of pollutants, particularly AO and Cr6+ from aqueous solution.
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Affiliation(s)
- Neha Abbasi
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India
| | - Suhail Ayoub Khan
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India
| | - Tabrez Alam Khan
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India.
| | - Salman S Alharthi
- Department of Chemistry, College of Science, Taif University, P.O. Box 110999, Taif, 21944, Saudi Arabia
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Ouimet JA, Xu J, Flores‐Hansen C, Phillip WA, Boudouris BW. Design Considerations for Next‐Generation Polymer Sorbents: From Polymer Chemistry to Device Configurations. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jonathan Aubuchon Ouimet
- Department of Chemical and Biomolecular Engineering University of Notre Dame Notre Dame Indiana 46566 United States
| | - Jialing Xu
- Department of Chemical and Biomolecular Engineering University of Notre Dame Notre Dame Indiana 46566 United States
| | - Carsten Flores‐Hansen
- Department of Chemistry Purdue University West Lafayette Indiana 47907 United States
| | - William A. Phillip
- Department of Chemical and Biomolecular Engineering University of Notre Dame Notre Dame Indiana 46566 United States
| | - Bryan W. Boudouris
- Department of Chemistry Purdue University West Lafayette Indiana 47907 United States
- Charles D. Davidson School of Chemical Engineering Purdue University West Lafayette Indiana 47907 United States
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Firmansyah ML, Ilmi T, Mukti RR, Patmawati, Goto M. Facile fabrication of a phosphonium-based ionic liquid impregnated chitosan adsorbent for the recovery of hexavalent chromium. RSC Adv 2022; 12:11207-11215. [PMID: 35425075 PMCID: PMC8996754 DOI: 10.1039/d2ra00064d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 04/04/2022] [Indexed: 11/22/2022] Open
Abstract
Chitosan adsorbents impregnated with a phosphonium-based ionic liquid (Chi_IL), trioctyldodecyl phosphonium chloride, were prepared for the adsorption of hexavalent chromium and compared to the performance of native chitosan. The physical and chemical properties of the adsorbents were characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Effects of various parameters, such as pH, adsorbent dosage, contact time, temperature, and multi-component systems, were systematically examined. Chi_IL showed a high adsorption capacity (282.6 mg g-1) compared to native chitosan (238.1 mg g-1). The adsorption kinetics of the metals followed a pseudo-second-order kinetic model, and the experimental data were a good fit for the Freundlich isotherm model. Following the isotherm and activation energy parameter, adsorption of Cr(vi) onto Chi_IL follows a chemisorption process, possibly through an anionic exchange with the anion of the IL. The thermodynamic parameters suggested that the adsorption of Cr(vi) is a spontaneous and exothermic reaction. In the column adsorption, Chi_IL exhibited a longer column exhaustion time than that of native chitosan owing to the enhanced adsorption capacity caused by the introduction of IL. Moreover, the column with the parameters of 6 cm bed depth, 5 mL min-1 flow rate, and 50 mg L-1 was able to achieve the best performance in Cr(vi) adsorption.
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Affiliation(s)
- Mochamad Lutfi Firmansyah
- Nanotechnology Engineering, Faculty of Advanced Technology and Multidiscipline, Airlangga University Jl. Dr Ir. H. Soekarno Surabaya 60115 Indonesia
| | - Thalabul Ilmi
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung Jl Ganesha 10 Bandung 40132 Indonesia
| | - Rino Rakhmata Mukti
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung Jl Ganesha 10 Bandung 40132 Indonesia
- Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung Jl Ganesha 10 Bandung 40132 Indonesia
- Research and Innovation Center for Advanced Materials, Institut Teknologi Sumatera Jl. Terusan Ryacudu Lampung 35365 Indonesia
| | - Patmawati
- Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga Jalan Mulyorejo Kampus C Surabaya 60115 Indonesia
| | - Masahiro Goto
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
- Center for Future Chemistry, Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
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CaCO 3-coated PVA/BC-based composite for the simultaneous adsorption of Cu(II), Cd(II), Pb(II) in aqueous solution. Carbohydr Polym 2021; 267:118227. [PMID: 34119180 DOI: 10.1016/j.carbpol.2021.118227] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/13/2021] [Accepted: 05/16/2021] [Indexed: 01/09/2023]
Abstract
A polymer composite material comprising polyvinyl alcohol/bacterial cellulose/calcium carbonate (PVA/BC/CaCO3) was prepared for enabling the selective adsorption of toxic heavy metal ions, such as Cd(II), Cu(II), and Pb(II) from solution. FT-IR, SEM and XRD analyses confirmed the successful incorporation of CaCO3 into the PVA-based polymer by chemical cross-linking with epichlorohydrin. The optimal pH for adsorption of the metal ions onto PVA/BC/CaCO3 was determined to be 6.0. The pseudo-first-order kinetics model was best-suited for fitting the adsorption kinetics data, and the Langmuir model was best-suited for fitting the thermodynamic adsorption data. The maximum adsorption capacities of PVA/BC/CaCO3 for Cu(II), Pb(II), and Cd(II) were found to be 57.1, 513.6, and 238.6 mg/g, respectively, at 40 °C. In addition, the adsorbent was found to be highly recyclable. Overall, PVA/BC/CaCO3 adsorbent has the applicable potential in the removal of heavy metal ions from contaminated solution.
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Lin M, Zou Q, Wang C, Zhang R, Li Y, Li T, Li Y. A new strategy to prepare n-HA/CS composite scaffolds with surface loading of CS microspheres. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1960338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mingyue Lin
- Research Center for Nano-Biomaterial, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Qin Zou
- Research Center for Nano-Biomaterial, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Chenxin Wang
- Research Center for Nano-Biomaterial, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Rui Zhang
- Research Center for Nano-Biomaterial, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Yufan Li
- Research Center for Nano-Biomaterial, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Taihe Li
- Sichuan University-Pittsburgh Institute, Sichuan University, Chengdu, China
| | - Yubao Li
- Research Center for Nano-Biomaterial, Analytical & Testing Center, Sichuan University, Chengdu, China
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Semi-interpenetrating chitosan/ionic liquid polymer networks as electro-responsive biomaterials for potential wound dressings and iontophoretic applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111798. [PMID: 33579445 DOI: 10.1016/j.msec.2020.111798] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/19/2020] [Accepted: 12/05/2020] [Indexed: 12/16/2022]
Abstract
In this work, electro-responsive chitosan/ionic liquid-based hydrogels were synthetized for the first time, envisaging the development of iontophoretic biomaterials for the controlled release/permeation of charged biomolecules. The main goal was to enhance and tune the physicochemical, mechanical, electro-responsive, and haemostatic properties of chitosan-based biomaterials to obtain multi-stimuli responsive (responsive to electrical current, ionic strength, and pH) and mechanically stable hydrogels. To accomplish this objective, polycationic semi-interpenetrating copolymer networks (semi-IPN) were prepared by combining chitosan (CS) and ionic liquid-based polymers and copolymers, namely poly(1-butyl-3-vinylimidazolium chloride) (poly(BVImCl)) and poly(2-hydroxymethyl methacrylate-co-1-butyl-3-vinylimidazolium chloride) (poly(HEMA-co-BVImCl)). Results show that prepared semi-IPNs presented high mechanical stability and were positively charged over a broad pH range, including basic pH. Semi-IPNs also presented faster permeation and release rates of lidocaine hydrochloride (LH), under external electrical stimulus (0.56 mA/cm2) in aqueous media at 32 °C. The kinetic release constants and the LH diffusion coefficients measured under electrical stimulus were ~1.5 and > 2.7 times higher for those measured for passive release. Finally, both semi-IPNs were non-haemolytic (haemolytic index ≤0.2%) and showed strong haemostatic activity (blood clotting index of ~12 ± 1%). Altogether, these results show that the prepared polycationic semi-IPN hydrogels presented advantageous mechanical, responsive and biological properties that enable them to be potentially employed for the design of new, safer, and advanced stimuli-responsive biomaterials for several biomedical applications such as haemostatic and wound healing dressings and iontophoretic patches.
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İnan S, Mumcu T, Seyhan Bozkurt S. Box-Behnken design for removal of uranium(VI) from aqueous solution using poly(ethylene glycol) based dicationic ionic liquid impregnated chitosan. Turk J Chem 2021; 44:756-774. [PMID: 33488192 PMCID: PMC7671208 DOI: 10.3906/kim-1911-73] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 05/04/2020] [Indexed: 11/23/2022] Open
Abstract
Poly(ethylene glycol) bis(methylimidazolium) di[bis(trifluoromethylsulfonyl)imide] was synthesized as an ionic liquid and impregnated onto chitosan. The removal of uranium(VI) ions from aqueous solution was investigated with batch sorption tests using ionic liquid impregnated chitosan. Response surface methodology based on 3 level Box–Behnken design was applied to analyze the effect of initial pH (4–6), initial concentration (20–60 mg L-1), contact time (15–105 min), and temperature (30–50 °C) on the uptake capacity of uranium(VI). Main effect of initial concentration, quadratic effect of contact time, and dual effect of initial pH and contact time were found statistically significant based on analysis of variance (ANOVA). Probability F-value (F = 1.49 ×10-6) and correlation coefficient (R2 = 0.96) point out that the proposed model is compatible with experimental data. The maximum uptake capacity of uranium(VI) was found as 28.48 mg g-1 at initial pH 4, initial concentration 60 mg L-1, contact time of 70 min, and a temperature of 50 °C. Sorption kinetics followed a pseudo-second-order model and Freundlich model was obtained to fit the sorption data. The presence of competing ions slightly reduced uranium(VI) sorption and the selectivity order can be given as UO22+>Zn2+>Ni2+.
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Affiliation(s)
- Süleyman İnan
- Institute of Nuclear Sciences, Ege University, İzmir Turkey
| | - Taşkın Mumcu
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, İzmir Turkey
| | - Serap Seyhan Bozkurt
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, İzmir Turkey
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Garg M, Bhullar N, Bajaj B, Sud D. Terephthalaldehyde as a good crosslinking agent in crosslinked chitosan hydrogel for the selective removal of anionic dyes. NEW J CHEM 2021. [DOI: 10.1039/d0nj05758d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This work reports the selectivity and good adsorption performance for the removal of anionic dyes using an ultrasonic-synthesized terephthalaldehyde crosslinked chitosan hydrogel.
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Affiliation(s)
- Madhvi Garg
- Department of Chemistry
- Sant Longowal Institute of Engineering and Technology
- Sangrur
- India
| | - Navneet Bhullar
- Department of Chemical engineering
- Sant Longowal Institute of Engineering and Technology
- Sangrur
- India
| | - Bharat Bajaj
- Center for Nanoscience and Nanotechnology
- Panjab University
- Chandigarh-160025
- India
| | - Dhiraj Sud
- Department of Chemistry
- Sant Longowal Institute of Engineering and Technology
- Sangrur
- India
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Trikkaliotis DG, Christoforidis AK, Mitropoulos AC, Kyzas GZ. Adsorption of copper ions onto chitosan/poly(vinyl alcohol) beads functionalized with poly(ethylene glycol). Carbohydr Polym 2020; 234:115890. [DOI: 10.1016/j.carbpol.2020.115890] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/11/2020] [Accepted: 01/16/2020] [Indexed: 12/20/2022]
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Yan Y, Yang S, Jiang F, Luo Y, Gao H, Liao Y. Efficient removal of lead ions from aqueous solutions using ZnSe/ZnO/Bio-CaCO 3. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:91-101. [PMID: 32293592 DOI: 10.2166/wst.2020.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The sheet-like adsorbent of the eggshell wastes was prepared by the thermal hydrolysis method. The structure of the adsorbent was characterized by scanning electron microscope, Brunauer-Emmett-Teller, X-ray diffraction, transmission electron microscope, and X-ray photoelectron spectrometer. The adsorption capacity was investigated in a Pb2+ solution. The effects of initial pH, salt concentration, contact time, and adsorbate concentration on the adsorption of lead ions were investigated in detail. The morphology of the adsorbent was sheet-like microspheres. Zinc selenide/zinc oxide could be uniformly loaded onto the eggshell waste surface, which could effectively enhance the specific surface area of the eggshell wastes. The adsorption kinetics and isotherm followed the pseudo-second-order and Langmuir-Freundlich isotherm model, respectively. The synthesized adsorbent showed a maximum lead adsorption capacity of 1,428.78 mg/g at room temperature. Ion-exchange was the main adsorption mechanism.
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Affiliation(s)
- Yi Yan
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, China E-mail: ; †Yi Yan and Shuai Yang contributed equally to this work
| | - Shuai Yang
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, China E-mail: ; †Yi Yan and Shuai Yang contributed equally to this work
| | - Feng Jiang
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, China E-mail:
| | - Yuwei Luo
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, China E-mail:
| | - Hejun Gao
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, China E-mail: ; Institute of Applied Chemistry, China West Normal University, Nanchong 637000, China
| | - Yunwen Liao
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, China E-mail:
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Polyvinylpyrrolidone functionalized magnetic graphene-based composites for highly efficient removal of lead from wastewater. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123927] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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