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Yin H, Zhang M, Wang B, Zhang F. Effective removal of Cu(II) from water by three-dimensional composite microspheres based on chitosan/sodium alginate/silicon dioxide: Adsorption performance and mechanism. Int J Biol Macromol 2024; 277:134585. [PMID: 39122081 DOI: 10.1016/j.ijbiomac.2024.134585] [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: 02/29/2024] [Revised: 05/21/2024] [Accepted: 08/06/2024] [Indexed: 08/12/2024]
Abstract
Chitosan (CS) is commonly used as an adsorbent for removing Cu(II) from water, but it has drawbacks such as solubility in dilute acid, difficulty in recycling in powder form, and short service life. This study utilized sodium alginate (SA) as a gel carrier to encapsulate CS, combined with silicon dioxide (SiO2) to improve mechanical stability. The preparation of CS/SA/SiO2 (SSC1.0) involved physical blending, CaCl2 cross-linking, and freeze-drying. Characterization methods such as SEM-EDS, FTIR, BET, and XRD were used to analyze the structural composition of SSC1.0. The material exhibited a folded surface, porous internal cross-section, nitrogen/oxygen-containing functional groups, and thermal stability in high temperatures and various aqueous environments. The adsorption performance of SSC1.0 on Cu(II) was evaluated under different conditions, showing a maximum adsorption capacity of 47.50 mg/g. The material maintained a removal rate above 70 % after 5 cycles. SSC1.0 also showed the highest removal rate of Cu(II) when applied to mine wastewater treatment. Adsorption modeling indicated that the process was driven by chemical reactions and was spontaneous and heat-absorbing.'
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Affiliation(s)
- Hang Yin
- School of Urban Construction, Changzhou University, Changzhou 213164, China
| | - Miao Zhang
- School of Urban Construction, Changzhou University, Changzhou 213164, China
| | - Bowen Wang
- School of Urban Construction, Changzhou University, Changzhou 213164, China
| | - Fenge Zhang
- School of Urban Construction, Changzhou University, Changzhou 213164, China.
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2
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Shao Z, Ding L, Zhu W, Fan C, Di K, Yuan R, Wang K. Highly selective detection and removal of mercury ions in the aquatic environment based on magnetic ZIF-71 multifunctional composites with sufficient chlorine functional groups. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171085. [PMID: 38387584 DOI: 10.1016/j.scitotenv.2024.171085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/16/2024] [Accepted: 02/17/2024] [Indexed: 02/24/2024]
Abstract
The development of both detection and removal technologies for heavy metal ions is of great importance. Most of the existing adsorbents that contain oxygen, nitrogen or sulfur functional groups can remove heavy metals, but achieving both selective detection and removal of a single metal ion is difficult because they bind to a wide range of heavy metal ions. Herein, we selected zeolite imidazolium hydrochloride framework-71 (ZIF-71) with sufficient chlorine functional groups to fabricate magnetic ZIF-71 multifunctional composites (M-ZIF-71). M-ZIF-71 had a large specific surface area, excellent water stability, and good magnetic properties, which made M-ZIF-71 conducive to the separation and recovery of adsorbents and the assembly of electrodes. M-ZIF-71 exhibited high selectivity, wide linear range (1-500 μg/L), and low detection limit (0.32 μg/L) for electrochemical detection of mercury ions (Hg2+). Meanwhile, M-ZIF-71 demonstrated rapid Hg2+ adsorption with a high capacity of 571.2 mg/g and excellent recyclability. The high selectivity for Hg2+ was attributed to the powerful affinity of highly electronegative chlorine and Hg2+. Moreover, XPS spectra demonstrated the interaction between chlorine and Hg2+. This work provides a new inspiration for applications in the targeted monitoring and removal of heavy metal pollution.
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Affiliation(s)
- Zhiying Shao
- Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University), Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Lijun Ding
- Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University), Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Weiran Zhu
- Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University), Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Cunhao Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kezuo Di
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Ruishuang Yuan
- Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University), Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University), Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, PR China; School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China; Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
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3
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Wang Q, Qiao J, Xiong Y, Dong F, Xiong Y. A novel ZIF-8@IL-MXene/poly (N-isopropylacrylamide) nanocomposite hydrogel toward multifunctional adsorption. ENVIRONMENTAL RESEARCH 2024; 242:117568. [PMID: 37979930 DOI: 10.1016/j.envres.2023.117568] [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: 07/06/2023] [Revised: 10/07/2023] [Accepted: 10/22/2023] [Indexed: 11/20/2023]
Abstract
Phenols, dyes, and metal ions present in industrial wastewater can adversely affect the environment and leach biological carcinogens. Given that the current research focuses only on the removal of one or two of those categories. Herein, this work reports a novel ZIF-8@IL-MXene/Poly(N-isopropylacrylamide) (NIPAM) nanocomposite hydrogel that can efficiently and conveniently absorb and separate multiple pollutants from industrial wastewater. Ionic liquid (IL) was grafted onto MXene surfaces using a one-step method, and then incorporated into NIPAM monomer solutions to obtain the IL-MXene/PNIPAM composite hydrogel via in-situ polymerization. ZIF-8@IL-MXene/PNIPAM nanocomposite hydrogels were obtained by in-situ growth of ZIF-8 on the pore walls of composite hydrogels. As-prepared nanocomposite hydrogel showed excellent mechanical properties and can withstand ten repeated compressions without any damage, the specific surface area increased by 100 times, and the maximum adsorption capacities for p-nitrophenol (4-NP), crystal violet (CV), and copper ion (Cu2+) were 198.40, 325.03, and 285.65 mg g-1, respectively, at room temperature. The VPTTs of all hydrogels ranged from 33 to 35 °C, so the desorption process can be achieved in deionized water at 35-40 °C, and its adsorption capacities after five adsorption-desorption cycles decreased to 79%, 91%, and 29% for 4-NP, CV, and Cu2+, respectively. The adsorption data fitting results follow pseudo-second-order kinetics and Freundlich models, which is based on multiple interactions between the functional groups contained in hydrogels and adsorbent molecules. The hydrogel is the first to realize the high-efficiency adsorption of phenols, dyes and metal ions in industrial wastewater simultaneously, and the preparation process of hydrogels is environmentally friendly. Also, giving hydrogel multifunctional adsorption is beneficial to promote the development of multifunctional adsorption materials.
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Affiliation(s)
- Qian Wang
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Jing Qiao
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Yukun Xiong
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Fuping Dong
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Yuzhu Xiong
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China.
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4
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Chen Q, Zhang Y, Xia H, Liu R, Wang H. Fabrication of two novel amino-functionalized and starch-coated CuFe 2O 4-modified magnetic biochar composites and their application in removing Pb 2+ and Cd 2+ from wastewater. Int J Biol Macromol 2024; 258:128973. [PMID: 38163509 DOI: 10.1016/j.ijbiomac.2023.128973] [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: 10/13/2023] [Revised: 12/02/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
Novel magnetic biochar composites (SFeCu@SBCO and FeCu@SBCO-NH2) were fabricated by modifying oxidized sawdust biochar (SBCO) with Fe/Cu loading, starch-coating/amination, characterized (FTIR, XRD, BET, SEM-EDS and XPS) and applied in capturing Pb2+ and Cd2+ from wastewater. Adsorption experiments revealed that SFeCu@SBCO and FeCu@SBCO-NH2 exhibited extraordinary adsorption performance toward Pb2+/Cd2+ with the maximum adsorption capacity reaching 184.26/173.35 mg g-1 and 201.43/190.81 mg g-1, respectively, which were >5 times higher than those of SBC. The great increase in adsorption capacity of the two adsorbents was ascribed to the introduction of CuFe2O4 and starch/amino groups. Pb2+ and Cd2+ adsorption was an endothermic reaction controlled by monolayer chemisorption. Complexation and electrostatic attraction were the two predominant mechanisms. Besides, ion exchange together with physical adsorption also occurred during the adsorption. Additionally, the both adsorbents displayed favorable stability and reusability as well as desirable anti-interfering ability to other metal cations. Taken together, the both adsorbents could be utilized as reusable magnetic adsorbents with promising prospect in the effective remediation of Pb2+/Cd2+ contaminated water. The study not only contributed to the better understanding of biochar modification strategy and the application of modified biochar in heavy metals pollutants removal, but also realized resource utilization of biomass waste.
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Affiliation(s)
- Qian Chen
- School of Life and Environmental Sciences, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, 312000, Zhejiang, PR China
| | - Yaohong Zhang
- School of Life and Environmental Sciences, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, 312000, Zhejiang, PR China.
| | - Haixin Xia
- School of Life and Environmental Sciences, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, 312000, Zhejiang, PR China
| | - Renrong Liu
- School of Life and Environmental Sciences, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, 312000, Zhejiang, PR China
| | - Hai Wang
- School of Life and Environmental Sciences, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, 312000, Zhejiang, PR China.
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5
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Miao P, Gao J, Han X, Zhao Y, Chen T. Adsorption of Levofloxacin onto Graphene Oxide/Chitosan Composite Aerogel Microspheres. Gels 2024; 10:81. [PMID: 38275855 PMCID: PMC10815225 DOI: 10.3390/gels10010081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 01/27/2024] Open
Abstract
The removal of pharmaceutical residues from water resources using bio-based materials is very important for human safety and health. Bio-based graphene oxide/chitosan (GO/CS) aerogel microspheres were fabricated with emulsification and cross-linking, followed by freeze drying, and were used for the adsorption of levofloxacin (LOF). The obtained GO/CS aerogel microspheres were characterized with scanning electron microscopy (SEM), Fourier-transform infrared (FTIR), and thermogravimetry (TG). The effects of GO content, pH value, and temperature on their adsorption capacity were investigated. With the incorporation of 40 wt% GO, the adsorption capacity increased from 9.9 to 45.6 mg/g, and the highest adsorption capacity, 51.5 mg/g, was obtained at pH = 8 and T = 25 °C. In addition, to obtain deeper insight into the adsorption process, the thermodynamics and kinetics of the process were also investigated with four different models of LOF adsorption. The thermodynamic modeling results revealed that LOF adsorption is exothermic, and the kinetic investigation demonstrated that LOF adsorption is generally consistent with a pseudo-first-order rate law.
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Affiliation(s)
- Pengpai Miao
- School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China;
- School of Nuclear Technology and Chemistry & Biology, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (Y.Z.)
| | - Jie Gao
- School of Nuclear Technology and Chemistry & Biology, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (Y.Z.)
| | - Xiaobing Han
- School of Nuclear Technology and Chemistry & Biology, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (Y.Z.)
| | - Yuan Zhao
- School of Nuclear Technology and Chemistry & Biology, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (Y.Z.)
| | - Tao Chen
- School of Nuclear Technology and Chemistry & Biology, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (Y.Z.)
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Algethami JS, Alhamami MAM, Alqadami AA, Melhi S, Seliem AF. Magnetic hydrochar grafted-chitosan for enhanced efficient adsorption of malachite green dye from aqueous solutions: Modeling, adsorption behavior, and mechanism analysis. Int J Biol Macromol 2024; 254:127767. [PMID: 38287576 DOI: 10.1016/j.ijbiomac.2023.127767] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/12/2023] [Accepted: 10/27/2023] [Indexed: 01/31/2024]
Abstract
Water pollution by organic dyes is one of the most serious environmental problems worldwide. Malachite green (MG) is considered as one the serious organic dyes which is discharged in wastewater by leather and textile manufacturing plants. MG dye can cause severe hazards to the environment and human health. Therefore, the removal of MG dye from wastewater is very important and essential. This study aims to synthesize a new magnetic hydrochar grafted to chitosan (MWSHC@CS) for the removal of MG dye from the aqueous solutions. Transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area, and Zeta potential analysis were used to characterize the synthesized MWSHC@CS. Batch experiments were conducted to optimize MG dye adsorption conditions, including adsorbent mass, pH, temperature, initial concentration, and contact time. The results revealed that MWSHC@CS had an excellent removal efficiency (96.47 %) for MG dye at the optimum condition (at m: 20 mg, pH: 7.5, t: 420 min, and T: 298 K). Adsorption isotherms outcomes revealed the MG adsorption data were best fit by the Langmuir model with a maximum adsorption capacity (420.02 mg/g). Adsorption kinetics outcomes exhibited that the adsorption process of MG dye fitted well to the Elovich model. The thermodynamic results revealed that the adsorption process was physical, exothermic, and spontaneous. The adsorption mechanisms of MG onto MWSHC@CS were hydrogen bonding, electrostatic interaction, and π-π interactions. Furthermore, MWSHC@CS showed excellent reusability for the removal of MG over five cycles of adsorption-desorption (83.76 %). In conclusion, the study provides a new, low-cost, and effective magnetic nanocomposite based on chitosan as a promising adsorbent for the high-performance removal of MG dye from aqueous solutions.
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Affiliation(s)
- Jari S Algethami
- Department of Chemistry, College of Science and Arts, Najran University, P.O. Box, 1988, Najran 11001, Saudi Arabia; Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia.
| | - Mohsen A M Alhamami
- Department of Chemistry, College of Science and Arts, Najran University, P.O. Box, 1988, Najran 11001, Saudi Arabia.
| | - Ayoub Abdullah Alqadami
- Department of Industrial Chemistry, Faculty of Applied Science, University of Hajjah, Yemen.
| | - Saad Melhi
- Department of Chemistry, College of Science, University of Bisha, Bisha 61922, Saudi Arabia.
| | - Amal F Seliem
- Department of Chemistry, College of Science and Arts, Najran University, P.O. Box, 1988, Najran 11001, Saudi Arabia.
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Lee SY, Kim U, Kim Y, Lee SJ, Park EY, Oh SW. Enhanced detection of Listeria monocytogenes using tetraethylenepentamine-functionalized magnetic nanoparticles and LAMP-CRISPR/Cas12a-based biosensor. Anal Chim Acta 2023; 1281:341905. [PMID: 38783743 DOI: 10.1016/j.aca.2023.341905] [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: 08/17/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 05/25/2024]
Abstract
BACKGROUND Listeria monocytogenes is a pathogenic bacterium that can lead to severe illnesses, especially among vulnerable populations. Therefore, the development of rapid and sensitive detection methods is vital to prevent and manage foodborne diseases. In this study, we used tetraethylenepentamine (TEPA)-functionalized magnetic nanoparticles (MNPs) and a loop-mediated isothermal amplification (LAMP)-based CRISPR/Cas12a-based biosensor to concentrate and detect, respectively, L. monocytogenes. LAMP enables DNA amplification at a constant temperature, providing a highly suitable approach for point-of-care testing (POCT). The ability of CRISPR/Cas12a to cleave ssDNA reporter, coupled with TEPA-functionalized MNPs effective attachment to negatively charged bacteria, forms a promising biosensor. RESULTS The LAMP assay was meticulously developed by selecting specific primers and designing crRNA sequences targeting a specific region within the hly gene of L. monocytogenes. We selected primer and refined the amplification conditions by systematically exploring a temperature range from 59 °C to 69 °C, ensuring the attainment of optimal performance. This process was complemented by systematic optimization of LAMP-CRISPR/Cas12a system parameters. In particular, we successfully established the optimal ssDNA reporter concentrations (0-1.2 μM) and Cas12a-mediated trans-cleavage times (0-20 min), crucial components that underpin the effectiveness of the LAMP-CRISPR/Cas12a-based biosensor. For optimizing parameters in capturing L. monocytogenes using TEPA-functionalized MNPs, capture efficiency was significantly enhanced through adjustments in TEPA-functionalized MNPs concentration, incubation times, and magnetic separation duration. Large-volume (20 mL) magnetic separation exhibited a 10-fold sensitivity improvement over conventional methods. Utilizing TEPA-functionalized MNPs, the LAMP-CRISPR/Cas12a-based biosensor achieved detection limits of 100 CFU mL-1 in pure cultures and 100 CFU g-1 in enoki mushrooms. SIGNIFICANCE The integration of this novel technique with the LAMP-CRISPR/Cas12a-based biosensor enhances the accuracy and sensitivity of L. monocytogenes detection in foods, and it can be a promising biosensor for POCT. The 10-fold increase in sensitivity compared to conventional methods makes this approach a groundbreaking advancement in pathogenic bacteria detection for food safety and public health.
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Affiliation(s)
- So-Young Lee
- Department of Food and Nutrition, Kookmin University, Seoul, 136-702, Republic of Korea
| | - Unji Kim
- Department of Food and Nutrition, Kookmin University, Seoul, 136-702, Republic of Korea
| | - Younggyu Kim
- Lumimac, Inc, B1, 4, Dongnam-ro 2 gil, Songpa-gu, Seoul, Republic of Korea
| | - Seung Jae Lee
- Lumimac, Inc, B1, 4, Dongnam-ro 2 gil, Songpa-gu, Seoul, Republic of Korea
| | - Eun Young Park
- Lumimac, Inc, B1, 4, Dongnam-ro 2 gil, Songpa-gu, Seoul, Republic of Korea
| | - Se-Wook Oh
- Department of Food and Nutrition, Kookmin University, Seoul, 136-702, Republic of Korea.
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Yadav A, Raghav S, Jangid NK, Srivastava A, Jadoun S, Srivastava M, Dwivedi J. Myrica esculenta Leaf Extract-Assisted Green Synthesis of Porous Magnetic Chitosan Composites for Fast Removal of Cd (II) from Water: Kinetics and Thermodynamics of Adsorption. Polymers (Basel) 2023; 15:4339. [PMID: 37960019 PMCID: PMC10649474 DOI: 10.3390/polym15214339] [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: 09/01/2023] [Revised: 09/29/2023] [Accepted: 10/07/2023] [Indexed: 11/15/2023] Open
Abstract
Heavy metal contamination in water resources is a major issue worldwide. Metals released into the environment endanger human health, owing to their persistence and absorption into the food chain. Cadmium is a highly toxic heavy metal, which causes severe health hazards in human beings as well as in animals. To overcome the issue, current research focused on cadmium ion removal from the polluted water by using porous magnetic chitosan composite produced from Kaphal (Myrica esculenta) leaves. The synthesized composite was characterized by BET, XRD, FT-IR, FE-SEM with EDX, and VSM to understand the structural, textural, surface functional, morphological-compositional, and magnetic properties, respectively, that contributed to the adsorption of Cd. The maximum Cd adsorption capacities observed for the Fe3O4 nanoparticles (MNPs) and porous magnetic chitosan (MCS) composite were 290 mg/g and 426 mg/g, respectively. Both the adsorption processes followed second-order kinetics. Batch adsorption studies were carried out to understand the optimum conditions for the fast adsorption process. Both the adsorbents could be regenerated for up to seven cycles without appreciable loss in adsorption capacity. The porous magnetic chitosan composite showed improved adsorption compared to MNPs. The mechanism for cadmium ion adsorption by MNPs and MCS has been postulated. Magnetic-modified chitosan-based composites that exhibit high adsorption efficiency, regeneration, and easy separation from a solution have broad development prospects in various industrial sewage and wastewater treatment fields.
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Affiliation(s)
- Anjali Yadav
- Department of Chemistry, Banasthali Vidyapith, Banasthali 304022, India; (A.Y.)
| | - Sapna Raghav
- Department of Chemistry, Nirankari Baba Gurubachan Singh Memorial College, Sohna 122103, India
| | | | - Anamika Srivastava
- Department of Chemistry, Banasthali Vidyapith, Banasthali 304022, India; (A.Y.)
| | - Sapana Jadoun
- Departamento de Química, Facultad de Ciencias, Universidad de Tarapacá, Avda. General, Velásquez, Arica 1775, Chile;
| | - Manish Srivastava
- Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Jaya Dwivedi
- Department of Chemistry, Banasthali Vidyapith, Banasthali 304022, India; (A.Y.)
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9
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Cui H, Pan W, Li T, Shen X, Chang Y, Pang W, Duan X. Rapid purification and enrichment of viral particles using self-propelled micromotors. NANOSCALE 2023; 15:17105-17112. [PMID: 37850316 DOI: 10.1039/d3nr02812g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
Virus infections remain one of the principal causes of morbidity and mortality worldwide. The current gold standard approach for diagnosing pathogens requires access to reverse transcription-polymerase chain reaction (RT-PCR) technology. However, separation and enrichment of the targets from complex and diluted samples remains a major challenge. In this work, we proposed a micromotor-based sample preparation concept for the efficient separation and concentration of target viral particles before PCR. The micromotors are functionalized with antibodies with a 3D polymer linker and are capable of self-propulsion by the catalytic generation of oxygen bubbles for selective and positive virus enrichment. This strategy significantly improves the enrichment efficiency and recovery rate of virus (up to 80% at 104 tu mL-1 in a 1 mL volume within just 6 min) without external mixing equipment. The method allows the Ct value in regular PCR tests to appear 6-7 cycles earlier and a detection limit of 1 tu mL-1 for the target virus from swap samples. A point-of-need test kit is designed based on the micromotors which can be readily applied to pretreat a large volume of samples.
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Affiliation(s)
- Haipeng Cui
- State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, P.R. China
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Wenwei Pan
- State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, P.R. China
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Tiechuan Li
- State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, P.R. China
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Xiaotian Shen
- State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, P.R. China
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Ye Chang
- State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, P.R. China
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Wei Pang
- State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, P.R. China
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Xuexin Duan
- State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, P.R. China
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, P.R. China
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10
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Phonlakan K, Meetam P, Chonlaphak R, Kongseng P, Chantarak S, Budsombat S. Poly(acrylic acid- co-2-acrylamido-2-methyl-1-propanesulfonic acid)-grafted chitosan hydrogels for effective adsorption and photocatalytic degradation of dyes. RSC Adv 2023; 13:31002-31016. [PMID: 37876655 PMCID: PMC10591295 DOI: 10.1039/d3ra05596e] [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: 08/16/2023] [Accepted: 10/17/2023] [Indexed: 10/26/2023] Open
Abstract
As a result of the growth of industrialization and urbanization, the water ecosystem is contaminated by various pollutants, including heavy metal ions and dyes. The use of low-cost and environmentally friendly dye adsorbents has been investigated. A hydrogel was fabricated via graft polymerization of acrylic acid (AA) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) onto chitosan. The hydrogel was used as a dye adsorbent and support for a zinc oxide (ZnO) powder photocatalyst. The adsorption capacity of the bare hydrogel was greater towards cationic dyes than anionic dyes. Grafting P(AA-co-AMPS) exhibited a 23-time increase in adsorption capacity towards crystal violet (CV) compared to pristine chitosan. The effect of the AA-AMPS molar ratio on CV adsorption was studied. A hydrogel with an AA-AMPS ratio of 10 : 1 had the highest adsorption capacity towards CV in water, removing 91% of the dye in 12 h. The maximum adsorption capacity was 2023 mg g-1. The adsorption kinetics and isotherm were described by the pseudo-second-order model and the Langmuir model, respectively. ZnO particles were in situ synthesized within the 10 : 1 hydrogel to facilitate the recovery of the photocatalyst. The ZnO hydrogel composite could remove 95% and 92% of CV from solutions on the 1st and 2nd cycle, respectively. In addition, the hydrogel composite containing only 8.7 wt% of ZnO particles effectively degraded adsorbed CV under sunlight and could be reused without requiring a chemical regeneration or photocatalyst recovery procedure. This hydrogel composite is an effective dual-functional material for the adsorption and photodegradation of dye pollutants in wastewater.
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Affiliation(s)
- Kunlarat Phonlakan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University Khon Kaen 40002 Thailand
| | - Panjalak Meetam
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University Khon Kaen 40002 Thailand
| | - Rungthip Chonlaphak
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University Khon Kaen 40002 Thailand
| | - Piyawan Kongseng
- Division of Physical Science, Faculty of Science, Prince of Songkla University Hat Yai Songkhla 90110 Thailand
| | - Sirinya Chantarak
- Division of Physical Science, Faculty of Science, Prince of Songkla University Hat Yai Songkhla 90110 Thailand
| | - Surangkhana Budsombat
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University Khon Kaen 40002 Thailand
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11
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Bulin C. Adsorption mechanism and removal efficiency of magnetic graphene oxide-chitosan hybrid on aqueous Zn(II). Int J Biol Macromol 2023; 241:124588. [PMID: 37105255 DOI: 10.1016/j.ijbiomac.2023.124588] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/31/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023]
Abstract
Magnetic architecture incorporating graphene-chitosan has demonstrated encouraging application in wastewater purification. Herein, a ternary hybrid based on Fe3O4-graphene oxide-chitosan (MGOCS) was fabricated and employed as adsorbent to remove aqueous Zn(II). The adsorption mechanism was intensively inspected based on the hard and soft acid base (HSAB) theory. Results present, MGOCS removes 96.73 % of Zn(II) in 38 min, with adsorption quantity 386.92 mg·g-1. Electron transfer and energy lowering determined by the HSAB theory illuminate the plausible adsorption sites in each component of MGOCS: O2- in Fe3O4, -C(=O)NH-, -NH2 in chitosan and -OH in graphene oxide. The exploration was upheld by spectroscopic analyses. Thereby, following adsorption mechanism was proposed. (1) ZnO bond was formed featured by electron donation. (2) The -C(=O)NH- group formed via amidation between graphene oxide and chitosan contributes to Zn(Π) uptake. This work may inspire the development of efficient adsorbent based on magnetic graphene-chitosan for wastewater remediation.
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Affiliation(s)
- Chaoke Bulin
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, PR China.
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12
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Liu X, Zhang Y, Liu Y, Zhang T. Preparation of polyamidoamine dendrimer-functionalized chitosan beads for the removal of Ag(I), Cu(II), and Pb(II). Int J Biol Macromol 2023; 242:124543. [PMID: 37080404 DOI: 10.1016/j.ijbiomac.2023.124543] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 04/05/2023] [Accepted: 04/17/2023] [Indexed: 04/22/2023]
Abstract
Chitosan bead grafted by third-generation dendrimers (CB-G3) with a diameter of 1.40 mm was synthesized to investigate their performance in recovering Ag(I), Cu(II), and Pb(II) ions in aqueous media. The prepared adsorbents were characterized by XRD, FT-IR, elemental analysis, TGA, and SEM, and the effects of pH, contact time, concentration, and temperature were examined. The results showed that the adsorbents were successfully fabricated. The optimum pH value was 5, and the increased generation number contributed to adsorption capacity improvement, indicating that electrostatic interactions between amine groups and metal ions are the governing mechanism of adsorption by the CB-G3. The kinetics, isotherms, and thermodynamics of Ag(I), Cu(II), and Pb(II) adsorption onto the CB-G3 were investigated. The adsorption processes can be described using pseudo-second-order kinetic and Langmuir models. The maximum monolayer adsorption capacities were 105.62, 88.82, and 97.87 mg·g-1 for Ag(I), Cu(II), and Pb(II) at 30 °C within 210 min, respectively. Electrostatic interactions and hydrogen bonds are the main mechanisms between metal ions and N atoms. Therefore, the CB-G3 is a promising candidate for Ag(I), Cu(II), and Pb(II) adsorption owing to its splendid ability in easy separation, good adsorptivity, and reusability for efficiently adsorbing Ag(I), Cu(II), and Pb(II) ions.
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Affiliation(s)
- Xiaoqi Liu
- School of Metallurgy, Northeastern University, Shenyang 110819, China; Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, China
| | - Yanyun Zhang
- School of Metallurgy, Northeastern University, Shenyang 110819, China; Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, China
| | - Yan Liu
- School of Metallurgy, Northeastern University, Shenyang 110819, China; Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, China
| | - Ting'an Zhang
- School of Metallurgy, Northeastern University, Shenyang 110819, China; Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, China.
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13
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Wei D, Guo Y, Feng Y, Lu W, Zhang J, Lin M, Lan X, Liao Y, Lan P, Lan L. Synthesis, characterization, DFT studies, and adsorption properties of sulfonated starch synthesized in deep eutectic solvent. Int J Biol Macromol 2023; 238:124083. [PMID: 36934821 DOI: 10.1016/j.ijbiomac.2023.124083] [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: 12/15/2022] [Revised: 03/01/2023] [Accepted: 03/14/2023] [Indexed: 03/21/2023]
Abstract
In this study, sulfonated starch (SS) was successfully synthesized using sulfamic acid as a sulfonating agent in a deep eutectic solvent (DES). Four-factor and three-level orthogonal experiments were conducted to determine the optimal preparation conditions, which were found to be a molar ratio of starch to urea of 1:20, a reaction temperature of 90 °C, a reaction time of 5 h, and a stirring speed of 200 rpm. The sulfonation reaction mechanism was extensively studied using various techniques, including Fourier transform infrared spectroscopy, elemental analysis, X-ray diffraction, molecular weight, particle distribution, X-ray photoelectron spectroscopy, scanning electron microscopy, and DFT calculations. The results showed that the sulfonation reaction slightly damaged starch granules, occurred on the surface of starch granules, and on the O6 atoms of the glucose unit. SS exhibited a wide pH range of application (5-10), a fast adsorption rate (400 s to reach adsorption equilibrium), and a high adsorption capacity (118.3 mg/g) under optimal conditions. The adsorption process of SS for methylene blue followed the pseudo-first-order kinetic model and was consistent with the Langmuir model, which was endothermic and spontaneous. The adsorption process was attributed to hydrogen bonding and electrostatic interactions.
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Affiliation(s)
- Donglai Wei
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Yingtao Guo
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Yuxian Feng
- Department of Guangxi Industrial Research Institute of New Functional Materials Co., Ltd., Nanning 530022, PR China
| | - Wenqing Lu
- Department of Guangxi Gaoyuan Starch Co., Ltd, Nanning 530108, PR China
| | - Jintao Zhang
- Department of Guangxi Gaoyuan Starch Co., Ltd, Nanning 530108, PR China
| | - Minghao Lin
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Xiongdiao Lan
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Yexin Liao
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Ping Lan
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China.
| | - Lihong Lan
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China.
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Song Z, Wang S, Yang L, Hou R, Wang R, Zhang N, Wang Y, Li C, Tan Y, Huang S, Chen J, Zhang Z. Rotenone encapsulated in pH-responsive alginate-based microspheres reduces toxicity to zebrafish. ENVIRONMENTAL RESEARCH 2023; 216:114565. [PMID: 36243052 DOI: 10.1016/j.envres.2022.114565] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/14/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Rotenone is a botanical pesticide and has long been used for control of insect pests and also as a natural piscicide for management of fish populations in many countries. Field application for pest control, however, often encounters the movement of rotenone into surface water due to spray drift or surface runoff after rainfall, which could potentially result in water pollution and unexpected death of fishes. To minimize its effect on freshwater and the problem of fish dying, one solution was to encapsulate rotenone in specific microspheres, limiting its release and reducing its toxicity since rotenone can be quickly degraded under sunlight. In this study, pH-responsive alginate-based microspheres were synthesized to encapsulating rotenone, which were designated as rotenone beads. The rotenone beads, along with alginate beads (devoid of rotenone) were characterized and evaluated for their responses to pH and effects on zebrafish. Results showed that the microspheres had high loading efficiency (4.41%, w/w) for rotenone, and rotenone beads well responded to solution pH levels. The cumulative release rates of rotenone from the beads were 27.91%, 42.72%, and 90.24% at pH 5.5, 7.0, and 9.0, respectively. Under acidic conditions, the rotenone release rate was lower due to hydrogen bonding. On the contrary, rotenone became more quickly released at the high pH due to intermolecular repulsion. The toxicity of rotenone beads to zebrafish and fish embryos at a pH of 5.5 was reduced by 2- and 4-fold than chemical rotenone. Since pH levels in most freshwater lakes, ponds, and streams vary from 6 to 8, rotenone release from the beads in such freshwater could be limited. Thus, the synthesized rotenone beads could be relatively safely used for pest control with limited effects on freshwater fishers.
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Affiliation(s)
- Zixia Song
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China; Mid-Florida Research and Education Center, Department of Environmental Horticulture, Institute of Food and Agricultural Sciences, University of Florida, Apopka, FL, 32703, USA
| | - Shiying Wang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Liupeng Yang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Ruiquan Hou
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Ruifei Wang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Ning Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Yongqing Wang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Chao Li
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Yuting Tan
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Suqing Huang
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Jianjun Chen
- Mid-Florida Research and Education Center, Department of Environmental Horticulture, Institute of Food and Agricultural Sciences, University of Florida, Apopka, FL, 32703, USA.
| | - Zhixiang Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China.
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15
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Bulin C, Zheng R, Song J, Bao J, Xin G, Zhang B. Magnetic Graphene Oxide-Chitosan Nanohybrid for efficient removal of aqueous Hg(Π) and The Interaction Mechanism. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Isotherm, Thermodynamics, and Kinetics of Methyl Orange Adsorption onto Magnetic Resin of Chitosan Microspheres. Int J Mol Sci 2022; 23:ijms232213839. [PMID: 36430316 PMCID: PMC9692306 DOI: 10.3390/ijms232213839] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Severe environmental pollution problems arising from toxic dyestuffs (e.g., methyl orange) are receiving increasing attention. Therefore, dyes' safe removal has become a research hotspot. Among the many physical-chemical removal techniques, adsorption using renewable biological resources has proved to be more advantageous over others due to its effectiveness and economy. Chitosan is a natural, renewable biopolymer obtained by deactivated chitin. Thus, the magnetic resin of chitosan microspheres (MRCM), prepared by reversed-phase suspension cross-linking polymerization, was used to remove methyl orange from a solution in a batch adsorption system. The main results are as follows: (1) The results of physical and swelling properties of MRCM indicated that MRCM was a type of black spherical, porous, water-absorbing, and weak alkali exchange resin, and it had the ability to adsorb methyl orange when it was applied in solutions above pH 2.0. (2) In batch adsorption studies, the maximum adsorption capacity was obtained at pH 5; the adsorption equilibrium time was 140 min; and the maximum adsorption was reached at 450 mg/L initial concentration. (3) Among the three isotherm adsorption models, Langmuir achieved the best fit for the adsorption of methyl orange onto MRCM. (4) The adsorption thermodynamics indicated that the adsorption was spontaneous, with increasing enthalpy, and was driven by the entropy. (5) The pseudo-second-order kinetics equation was most suitable to describe the adsorption kinetics, and the adsorption kinetics was also controlled by the liquid-film diffusion dynamics. Consequently, MRCM with relatively higher methyl orange adsorption exhibited the great efficiency for methyl orange removal as an environment-friendly sorbent. Thus, the findings are useful for methyl orange pollution control in real-life wastewater treatment applications.
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Removal of Cr(VI) and Ag(I) by grafted magnetic zeolite/chitosan for water purification: Synthesis and adsorption mechanism. Int J Biol Macromol 2022; 222:2615-2627. [DOI: 10.1016/j.ijbiomac.2022.10.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 07/16/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
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18
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Wu Y, Li H, An Y, Sun Q, Liu B, Zheng H, Ding W. Construction of magnetic alginate-based biosorbent and its adsorption performances for anionic organic contaminants. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Chen G, Song K, Chen X, Wang W, Liu Y, Huang X, Yin G. Adsorption Experiments and Kinetics of an Efficient Absorbent for Cd(II). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422070147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Hu C, Jiang J, Li Y, Wu Y, Ma J, Li H, Zheng H. Eco-friendly poly(dopamine)-modified glass microspheres as a novel self-floating adsorbent for enhanced adsorption of tetracycline. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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21
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Sulfhydryl Functionalized Magnetic Chitosan as an Efficient Adsorbent for High-Performance Removal of Cd(II) from Water: Adsorption Isotherms, Kinetic, and Reusability Studies. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/2248249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, dimercaptosuccinic acid-functionalized magnetic chitosan (Fe3O4@CS@DMSA) was synthesized via in situ coprecipitation process and amidation reaction, aiming to eliminate cadmium (Cd(II)) ions from an aqueous environment. The structure, morphology, and particle size of the Fe3O4@CS@DMSA adsorbent were investigated using FTIR, TEM, EDX, TGA, zeta potential, and XRD techniques, and the obtained results approved the successful synthesis of the Fe3O4@CS@DMSA nanocomposite. The influence of external adsorption conditions such as pH solution, adsorbent mass, initial Cd(II) concentration, temperature, and contact time on the adsorption process was successfully achieved. Accordingly, pH: 7.6, contact time: 210 min, and adsorbent mass:10 mg were found to be the optimal conditions for best removal. The adsorption was analyzed using nonlinear isotherm and kinetic models. The outcomes revealed that the adsorption process obeyed the Langmuir and the pseudo-first-order models. The maximum adsorption capacity of Fe3O4@CS@DMSA toward Cd(II) ion was 314.12 mg/g. The adsorption mechanism of Cd(II) on Fe3O4@CS@DMSA nanocomposite is the electrostatic interaction. The reusability test of Fe3O4@CS@DMSA nanocomposite exhibited that the adsorption efficiency was 72% after the 5th cycle. Finally, this research indicates that the Fe3O4@CS@DMSA exhibited excellent characteristics such as high adsorption capacity, effective adsorption-desorption results, and easy magnetic separation and thus could be an effective adsorbent for removing Cd(II) ions from aqueous solutions.
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Yang L, Luo X, Yan L, Zhou Y, Yu S, Ju H, Wang Y, Zhang L. Efficient selective adsorption of uranium using a novel eco-friendly chitosan-grafted adenosine 5′-monophosphate foam. Carbohydr Polym 2022; 285:119157. [DOI: 10.1016/j.carbpol.2022.119157] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 12/11/2022]
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23
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Sun M, Sun Q, Zhao C, Huang Y, Jiang J, Ding W, Zheng H. Degradation of diclofenac sodium with low concentration from aqueous milieu through polydopamine-chitosan modified magnetic adsorbent-assisted photo-Fenton process. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Gao B, Chang Q, Xi Z, El-Sayed MMH, Shoeib T, Yang H. Fabrication of environmentally-friendly composited sponges for efficient removal of fluoroquinolones antibiotics from water. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:127796. [PMID: 34802821 DOI: 10.1016/j.jhazmat.2021.127796] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/26/2021] [Accepted: 11/11/2021] [Indexed: 06/13/2023]
Abstract
In this study, two environmentally-friendly macroscopically formal (PVF) composited sponges (PL and PLS) functionalized with lignin and lignosulfonate, respectively, were fabricated by a one-step mechanical foaming method. PLS, obtained with the fed mass ratio of 0.3:1 lignosulfonate to PVF in the preparation process, possessed a large specific surface area of approximately 22.396 m2/g, a three-dimensional skeleton structure with a skeletal density of 3.236 g/cm3, and 0.338 mmol/g of acidic oxygen-containing groups. Thus, it showed a high adsorption capacity of 0.16-0.24 mmol/g in removing seven antibiotics, of the popular fluoroquinolones (FQs) family from water. The contributions of hydrogen bonding, electrostatic attraction (EA) and π-π electron donor-acceptor interaction to the adsorption of FQs onto the PL and PLS sponges were analyzed systematically by investigating the pH dependence of the adsorption capacity, and the changes in adsorption of two sub structural analogs of FQs as molecular probes, and by performing theoretical calculations. The EA between the acidic oxygen-containing groups on the sponges and the amino groups of FQs played a dominant role in adsorption in near neutral conditions, leading to a superior adsorption performance for PLS. Overall, the composited sponges have the advantages of simple production, environmental-friendliness, convenient recycle, and low cost, which renders them potentially viable in treating real wastewater containing FQs.
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Affiliation(s)
- Boqiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Qianqian Chang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Zhonghua Xi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Mayyada M H El-Sayed
- Department of Chemistry, The American University in Cairo, New Cairo 11835, Egypt
| | - Tamer Shoeib
- Department of Chemistry, The American University in Cairo, New Cairo 11835, Egypt
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; Quanzhou Institute for Environmental Protection Industry, Nanjing University, Beifeng Road, Quanzhou 362000, PR China.
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Metal-organic framework grown in situ on chitosan microspheres as robust host of palladium for heterogeneous catalysis: Suzuki reaction and the p-nitrophenol reduction. Int J Biol Macromol 2022; 206:232-241. [PMID: 35157903 DOI: 10.1016/j.ijbiomac.2022.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/30/2022] [Accepted: 02/04/2022] [Indexed: 01/05/2023]
Abstract
In this study, the metal-organic framework ZIF-8 has been successfully planted on the surface of chitosan microspheres (CS/PDA@ZIF-8) using polydopamine as connecting material for the first time, which avoids the use of expensive, non-renewable, and non-biodegradable polystyrene microspheres commonly used as templates to prepare core-shell structures. Moreover, the metal-organic framework ZIF-8 was prepared specially by three different methods and all characterized by SEM, TEM, and BET, and the ZIF-8 shell prepared at room temperature presents a regular morphology, uniform size, large specific surface area (353.1 m2/g) than the shells prepared by the other methods including. The CS/PDA@ZIF-825@Pd with high catalytic activity and high stability was especially prepared by encapsulating Pd nanoparticles into the pores of CS/PDA@ZIF-825. Notably, the fabricated catalyst performed well in an array of reactions, for example the Kapp value of the p-nitrophenol reduction reaction reached 0.0426 s-1, and the TOF of the Suzuki coupling reaction reached 128 h-1. In addition, the ZIF-67, UiO-66, UiO-66-NH2, HKUST-1, and NH2-MIL-53(Al) were also grown on chitosan microcapsules successively to prepare the core-shell microspheres, which prove the universal applicability of this strategy. And beyond that, the introduction of chitosan microspheres endows the material with biodegradable properties and excellent recycling properties.
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Fan X, Wang X, Cai Y, Xie H, Han S, Hao C. Functionalized cotton charcoal/chitosan biomass-based hydrogel for capturing Pb 2+, Cu 2+ and MB. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127191. [PMID: 34537654 DOI: 10.1016/j.jhazmat.2021.127191] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/04/2021] [Accepted: 09/07/2021] [Indexed: 05/22/2023]
Abstract
In this work, a porous multi-functional biomass carbon was prepared by acid-base modification method, which realized the reuse of waste cotton material. Then, the modified biochar was combined with the acrylic-based hydrogel by radical polymerization, and the biochar acrylic-based hydrogel (CS/EDTA/CBC) composite with chitosan and ethylenediamine tetraacetic acid was successfully prepared. This not only increases the adsorption performance of the adsorbent but also improves the stability of hydrogel. These characteristics provide high-efficiency adsorption capacity for pollutants (1105.78 mg g-1 for Pb2+, 678.04 mg g-1 for Cu2+, and 590.72 mg g-1 for methylene blue (MB)), which is far superior to most reported adsorbents. Meanwhile, the adsorbent would have a strong chemical interaction with Pb2+ and Cu2+, can form a stable chelating structure, and showed stronger selective adsorption. The adsorption process is more suitable for the Langmuir isotherm and follows a pseudo-second-order kinetic model, which indicates that the adsorption is a single-layer adsorption, and the rate-limiting step is a chemical chelation reaction. XPS results confirmed that surface complexation and electrostatic attraction are the main mechanisms of the adsorption reaction. After five cycles, the adsorption capacity of the adsorbent and the recovery of heavy metal ions remained at a high level.
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Affiliation(s)
- Xiangbo Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiaohong Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Yaotao Cai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Honghao Xie
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Shiqi Han
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chen Hao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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Magnetic chitosan microspheres: An efficient and recyclable adsorbent for the removal of iodide from simulated nuclear wastewater. Carbohydr Polym 2022; 276:118729. [PMID: 34823765 DOI: 10.1016/j.carbpol.2021.118729] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/20/2021] [Accepted: 10/01/2021] [Indexed: 12/16/2022]
Abstract
The efficient and recyclable magnetic chitosan microspheres (MCMs) were successfully synthesized to remove iodide from nuclear wastewater and characterized through XRD, FTIR, SEM, EDS, VSM, TGA and XPS. The characterization results indicated that the MCMs exhibited smooth spherical morphology and good magnetic properties. The removal potential of MCMs was investigated for iodide (I-) anions at different conditions. From pH 3 to pH 9, MCMs performed the high I- removal efficiency (>90%). The maximum I- removal capacity of MCMs was up to 0.8087 mmol g-1 at 298 K, well-fitting with the pseudo-second-order and Sips models. Furthermore, the I- removal efficiency of MCMs still maintained more than 91% after five adsorption-desorption cycles, performing good regeneration and reusability. This study is expected to prompt the MCMs to become an efficient and recyclable biosorbent for iodide removal from nuclear wastewater.
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Application of Novel Modified Chitosan Hydrogel Composite for the Efficient Removal of Eriochrome Black T and Methylene Blue Dyes from Aqueous Media. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02168-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Green method to synthesize magnetic zeolite/chitosan composites and adsorption of hexavalent chromium from aqueous solutions. Int J Biol Macromol 2022; 194:746-754. [PMID: 34813789 DOI: 10.1016/j.ijbiomac.2021.11.121] [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: 07/25/2021] [Revised: 11/16/2021] [Accepted: 11/16/2021] [Indexed: 01/20/2023]
Abstract
This paper aims to synthesis a recyclable adsorbent from solid waste using a clean and environmentally friendly method to deal with Cr(VI) water pollution. Magnetic zeolite/chitosan composites (ZFA/MCS) were prepared by the neutralization method. The adsorption properties of ZFA/MCS, prepared by the neutralization method for Cr(VI) ions under different conditions especially cross-linking, were investigated in detail. The results showed that cross-linked ZFA/MCS generally showed higher adsorption capacity than uncross-linked ones. The uncross-linked ZFA/MCS and cross-linked ZFA/MCS showed a saturated adsorption capacity of 25.67 mg·g-1 and 28.47 mg·g-1 at pH = 3 and 30 °C, respectively. The experimental values were followed Langmuir adsorption equations and pseudo-second-order kinetic model, indicating that the adsorption was probably monolayer coverage and chemical adsorption, respectively. The effect of temperature proved that the adsorption was spontaneous and endothermic. Therefore, the adsorbent with excellent recyclability and adsorbability was successfully fabricated via a green synthetic strategy.
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Yang L, Huang C, Luo X, Zhang L, Ye Y, Jun H, Wang Y. Chitosan-based aerogel with anti-swelling for U(VI) adsorption from aqueous solution. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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31
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Fu H, Ma S, Xu S, Duan R, Cheng G, Zhao P. Hierarchically porous magnetic biochar as an efficient amendment for cadmium in water and soil: Performance and mechanism. CHEMOSPHERE 2021; 281:130990. [PMID: 34289633 DOI: 10.1016/j.chemosphere.2021.130990] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/14/2021] [Accepted: 05/23/2021] [Indexed: 06/13/2023]
Abstract
Three types of hierarchically porous magnetic biochars (HMBs) were prepared by pyrolyzing low-cost wheat straw and potassium ferrate (K2FeO4) under a nitrogen atmosphere at 600, 700 and 800 °C, respectively, which could be used as amendments for cadmium (Cd) in water and soil. HMB fabricated at 700 °C (HMB700) had the best remediation performance for Cd in water and soil, which was mainly due to its largest specific surface area and micropore volume. Batch sorption experiments showed that Cd(II) sorption onto HMBs were well-described by a pseudo-second-order model and Sips (Freundlich-Langmuir) model, indicating that HMBs removed Cd(II) mainly through chemical adsorption. MINTEQ modeling evidenced that HMBs adsorbed Cd(II) mainly through precipitation rather than surface complexation. The adsorption behavior of HMB700 to Cd(II) could be explained by surface complexation (-OCd, -COOCd), precipitation (Cd(OH)2 and CdCO3), physical adsorption (rich pore structure) and ion exchange (K+, Ca2+, Mg2+). Furthermore, adding HMBs (1 wt%) (incubation 60 days) could also significantly increase soil pH and electrical conductivity (EC), and significantly reduce the available Cd content in soil (47.97%-61.38%). Adding HMBs could promote the conversion of bioavailable to less bioavailable Cd forms. These results provided a new idea for fabricating agricultural waste-based HMBs to remediate Cd in water and soil.
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Affiliation(s)
- Haichao Fu
- The Collaborative Center Innovation of Henan Food Crops, Henan Agricultural University, Zhengzhou, 450002, China; College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Shuanglong Ma
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Shengjun Xu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing, 100085, China
| | - Ran Duan
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Gong Cheng
- Environmental Engineering Center, Shenzhen Academy of Environmental Sciences, Shenzhen, 518001, China
| | - Peng Zhao
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, China.
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32
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Wang G, Guo K, Wang B, Han F, Guo Z, Song Z, Ji J, Tang C. Mercury Adsorption on Thiol-Modified Porous Boron Nitride: A Combined Experimental and Theoretical Investigation. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Gaoxing Wang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Kai Guo
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Bozheng Wang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Fengxiang Han
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, 1400 J.R. Lynch Street, Jackson, Mississippi 39217, United States
| | - Zhonglu Guo
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Zirui Song
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Jiawei Ji
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Chengchun Tang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China
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Guo T, Bulin C, Ma Z, Li B, Zhang Y, Zhang B, Xing R, Ge X. Mechanism of Cd(II) and Cu(II) Adsorption onto Few-Layered Magnetic Graphene Oxide as an Efficient Adsorbent. ACS OMEGA 2021; 6:16535-16545. [PMID: 34235325 PMCID: PMC8246493 DOI: 10.1021/acsomega.1c01770] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/08/2021] [Indexed: 05/24/2023]
Abstract
Heavy metal contamination caused by industrial discharge is a challenging environmental issue. Herein, an efficient adsorbent based on few-layered magnetic graphene oxide (FLMGO) was fabricated, characterized, and utilized to remove aqueous Cd(II) and Cu(II). Results present that the two components graphene oxide (GO) and Fe3O4 of FLMGO promote mutually, enabling FLMGO to outperform either GO or Fe3O4. Specifically, FLMGO adsorbs Cd(II) and Cu(II) with adsorption quantities of 401.14 and 1114.22 mg·g-1 in 5 and 7 min, respectively. Moreover, FLMGO can be readily recovered via magnetic separation using a hand-held magnet. Adsorptions are spontaneous, endothermic, and entropy increasing, which are the best described by the Freundlich and pseudo-second-order model. The interaction mechanism is as follows: lone pair electrons in C=O- and C-O-related groups were coordinated toward Cd(II) and Cu(II) to induce chemical interaction. The high adsorption efficiency endows FLMGO with encouraging application potential in heavy metal remediation.
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Affiliation(s)
- Ting Guo
- College
of Energy and Environment, Inner Mongolia
University of Science and Technology, Baotou 014010, P. R. China
| | - Chaoke Bulin
- College
of Materials and Metallurgy, Inner Mongolia
University of Science and Technology, Baotou 014010, P. R. China
- Central
Iron and Steel Research Institute, Beijing 100081, P. R.
China
| | - Zeyu Ma
- College
of Materials and Metallurgy, Inner Mongolia
University of Science and Technology, Baotou 014010, P. R. China
| | - Bo Li
- Central
Iron and Steel Research Institute, Beijing 100081, P. R.
China
| | - Yanghuan Zhang
- Central
Iron and Steel Research Institute, Beijing 100081, P. R.
China
| | - Bangwen Zhang
- Analysis
and Testing Center, Inner Mongolia University
of Science and Technology, Baotou 014010, P. R. China
| | - Ruiguang Xing
- College
of Materials and Metallurgy, Inner Mongolia
University of Science and Technology, Baotou 014010, P. R. China
| | - Xin Ge
- College
of Materials and Metallurgy, Inner Mongolia
University of Science and Technology, Baotou 014010, P. R. China
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34
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Men J, Shi H, Dong C, Yang Y, Han Y, Wang R, Zhang Y, Zhao T, Li J. Preparation of poly(sodium 4-styrene sulfonate) grafted magnetic chitosan microspheres for adsorption of cationic dyes. Int J Biol Macromol 2021; 181:810-823. [PMID: 33865891 DOI: 10.1016/j.ijbiomac.2021.04.079] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 04/11/2021] [Accepted: 04/13/2021] [Indexed: 12/23/2022]
Abstract
A novel adsorbent with high adsorption capacity to remove cationic dyes was synthesized. Sodium 4-styrene sulfonate (SSS) was grafted polymerization on the surface of magnetic chitosan microspheres via -NH2/S2O82- surface initiating system, obtaining MCS-g-PSSS microspheres. The grafted microsphere was characterized by Fourier transforms infrared spectroscopy, X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, vibration sample magnetometer and the Brunauer-Emmett-Teller. Cationic dyes were adsorbed by MCS-g-PSSS and methylene blue(MB) was acted as a typical example. The adsorption performance was explored by varying experimental conditions. The results showed the maximal adsorption capacity was 989 mg/g at pH 1 at 25 °C. The pseudo-second order model was found to be applicable for the adsorption kinetics. The adsorption capacity increased with rising temperature and it decreased owing to adding of ions. The adsorption isotherms were the best fitted by Langmuir. MCS-g-PSSS for MB showed high adsorption capacity due to the strong electrostatic interactions and π-π stacking, which was explained by FTIR and XPS and was verified by DFT calculations. The degree of adsorption spontaneity increased with rising the temperature. The grafted MCS-g-PSSS microspheres had high adsorption capacity for various kinds of cationic dyes and excellent for remove MB in the aqueous solution.
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Affiliation(s)
- Jiying Men
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China.
| | - Hongxing Shi
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China
| | - Chengya Dong
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China
| | - Yuanyuan Yang
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China
| | - Yuanrui Han
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China
| | - Ruixin Wang
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China
| | - Yiqing Zhang
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China
| | - Ting Zhao
- Shanxi Xinhua Chemical Co., Ltd., Taiyuan 030051, PR China
| | - Jun Li
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, PR China.
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35
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Gao B, Chang Q, Yang H. Selective adsorption of ofloxacin and ciprofloxacin from a binary system using lignin-based adsorbents: Quantitative analysis, adsorption mechanisms, and structure-activity relationship. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:144427. [PMID: 33418328 DOI: 10.1016/j.scitotenv.2020.144427] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/26/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
A series of actinia-shaped lignin-based adsorbents (LNAEs) featuring lignin (LN) as the core and grafted poly(acrylic acid) (PAA) as the tentacle were designed and fabricated. Two fluoroquinolones (FQs) with similar molecular structures, ofloxacin (OFL) and ciprofloxacin (CIP), were used as targets to study the selective adsorption performance of LNAEs associated with the structural effects of the LN-based adsorbents in FQs binary aqueous system. The adsorption of the two FQs by LNAEs complied with the competitive Langmuir isothermal model, and showed selective removal of CIP over OFL due to the additional negative charge-assisted hydrogen bond (CAHB) formed between the carboxyl group of LNAEs and the secondary amino group of CIP, in addition to the effects of electrostatic attraction and normal hydrogen bonds, according to quantitative studies and density functional theory analysis. A binary nonlinear model based on phenomenological theory was applied to study the effects of PAA branched-chain length and distribution on the selective adsorption performance of the LN-based adsorbents. Accordingly, the branched-chain distribution played a more important role and higher distribution density of branched PAA could expose more adsorption sites on LNAEs' surface and improve the adsorptive selectivity. This study offers a well understanding of the structure-activity relationship of the surface grafting-modified adsorbents in binary pollutant systems and fundamental guidance for the exploitation and design of novel and efficient adsorbents.
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Affiliation(s)
- Boqiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Qianqian Chang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
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36
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Zhao R, Zheng H, Zhong Z, Zhao C, Sun Y, Huang Y, Zheng X. Efficient removal of diclofenac from surface water by the functionalized multilayer magnetic adsorbent: Kinetics and mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:144307. [PMID: 33341637 DOI: 10.1016/j.scitotenv.2020.144307] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/15/2020] [Accepted: 11/28/2020] [Indexed: 05/09/2023]
Abstract
Developing robust and effective adsorbent for removing ubiquitous pharmaceutical diclofenac (DCF) from the aquatic environment is vitally important for environmental safety. Hence, a novel chitosan-based multilayer adsorbent (FCS-PD) with magnetic separation ability and surface functionality was successfully assembled, which had countless potential for removing contaminants from water. A series of instrumental technologies were performed to demonstrate the physicochemical properties of FCS-PD. Its adsorption performance toward DCF removal was comprehensively evaluated in synthetic water and surface water. The effects of microplastics, inorganic ions and humic acid on the adsorption were investigated. The maximum adsorption capacity of FCS-PD was calculated as 434.78 mg/g under neutral conditions, exhibiting superior adsorption performance than most reported adsorbents. The DCF in surface water was practically removed at low concentration (50 μg/L). FCS-PD presented a multistage kinetics controlled by chemisorption and intraparticle diffusion, which was emphasized by the pseudo-second-order kinetic and intra-particle diffusion analysis. After five cycles of adsorption and regeneration, the adsorption capacity only decreased by 9.9%, indicating the satisfactory regeneration of FCS-PD. The analysis of high-resolution X-ray photoelectron spectroscopic (XPS) and Fourier transform infrared spectroscopy (FTIR) revealed that the quaternary ammonium groups on the outer layer and the amino and hydroxyl groups on the chitosan layer are involved in the capture of DCF under electrostatic force and hydrogen bonding.
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Affiliation(s)
- Rui Zhao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Huaili Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, PR China.
| | - Zheng Zhong
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Chun Zhao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing 211816, PR China
| | - Yaoyao Huang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Xinyu Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, PR China
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37
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Shao Z, Lu J, Ding J, Fan F, Sun X, Li P, Fang Y, Hu Q. Novel green chitosan-pectin gel beads for the removal of Cu(II), Cd(II), Hg(II) and Pb(II) from aqueous solution. Int J Biol Macromol 2021; 176:217-225. [PMID: 33581208 DOI: 10.1016/j.ijbiomac.2021.02.037] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 11/20/2022]
Abstract
Chitosan-pectin gel beads (CPBs) were synthesized via a facile and green method and applied to remove heavy metals from aqueous solution. The structural characteristics of CPBs were investigated by SEM and FTIR, the mechanical strength of CPBs was measured by Texture Analyzer and the stability of CPBs was evaluated in acidic solution. To study the adsorption characteristics, the effect of pH, contact time, initial heavy metals concentration, temperature, adsorption mechanism and regeneration were systematically investigated. The adsorption kinetics fitted well pseudo-second-order model, and the adsorption isotherms were well described by Langmuir model. The maximum adsorption capacities of Cu(II), Cd(II), Hg(II) and Pb(II) were 169.4, 177.6, 208.5 and 266.5 mg/g, respectively. The adsorption-desorption experiments revealed that the CPBs exhibited a great reusability. Thus, the synthesized CPBs in this study had the potential to be utilized as an environment-friendly and green adsorbent for the removal of heavy metals.
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Affiliation(s)
- Zhiying Shao
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Jilai Lu
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Jian Ding
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Fengjiao Fan
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Xinyang Sun
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Peng Li
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China.
| | - Yong Fang
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China.
| | - Qiuhui Hu
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
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38
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Gao B, Chang Q, Cai J, Xi Z, Li A, Yang H. Removal of fluoroquinolone antibiotics using actinia-shaped lignin-based adsorbents: Role of the length and distribution of branched-chains. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123603. [PMID: 32777749 DOI: 10.1016/j.jhazmat.2020.123603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/05/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
A series of actinia-shaped lignin-based adsorbents (LNAEs) featuring lignin(LN) as the core and grafted poly(acrylic acid) (PAA) as the tentacle were designed and fabricated. LNAEs were applied to remove ofloxacin and ciprofloxacin from water, and their maximum adsorption capacities were 0.835 and 0.965 mmol/g at pH 6.0, respectively. However, their adsorption capacities were up to about 20 % and 31 % reductions in the present of NaCl and humic acid, respectively. Electrostatic attraction (EA) and hydrogen bonding (HB), including ordinary HB and negative charged auxiliary HB, were mainly involved in adsorption. Experimental and calculation results indicated HB contributes more than EA. The effects of two structural factors of LNAEs, namely, PAA branched-chain length(L) and distribution density(D), on the adsorption performance associated with HB and EA, were quantitatively discussed using a binary nonlinear model based on phenomenological theory. The fitting results were completely consistent with the experimental findings. D was more efficient than L in promoting HB and EA in adsorption due to the cooperative effects of adjacent branched-chains and enhanced activity of terminal groups. This study provides a better understanding of the structure-activity relationship of surface grafting-modified adsorbents and fundamental guidance for the exploitation and design of novel and efficient adsorbents.
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Affiliation(s)
- Boqiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Qianqian Chang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Jun Cai
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Zhonghua Xi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
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40
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Shi H, Dong C, Yang Y, Han Y, Wang F, Wang C, Men J. Preparation of sulfonate chitosan microspheres and study on its adsorption properties for methylene blue. Int J Biol Macromol 2020; 163:2334-2345. [DOI: 10.1016/j.ijbiomac.2020.09.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 12/31/2022]
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Tighadouini S, Radi S, El Massaoudi M, Lakbaibi Z, Ferbinteanu M, Garcia Y. Efficient and Environmentally Friendly Adsorbent Based on β-Ketoenol-Pyrazole-Thiophene for Heavy-Metal Ion Removal from Aquatic Medium: A Combined Experimental and Theoretical Study. ACS OMEGA 2020; 5:17324-17336. [PMID: 32715217 PMCID: PMC7377074 DOI: 10.1021/acsomega.0c01616] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/19/2020] [Indexed: 05/16/2023]
Abstract
A new sustainable and environmentally friendly adsorbent based on a β-ketoenol-pyrazole-thiophene receptor grafted onto a silica surface was developed and applied to the removal of heavy-metal ions (Pb(II), Cu(II), Zn(II), and Cd(II)) from aquatic medium. The new material SiNPz-Th was well characterized and confirms the success of covalent binding of the receptor on the silica surface. The effect of environmental parameters on adsorption including pH, contact time, temperature, and the initial concentration were investigated. The maximum adsorption capacities of SiNPz-Th for Pb(II), Cu(II), Zn(II), and Cd(II) ions were 102.20, 76.42, 68.95, and 32.68 mg/g, respectively, at 30 min and pH = 6. The adsorption isotherms, kinetics, and thermodynamic process were investigated and showed efficiency and selectivity toward Pb(II) and good regeneration performance. Density functional theory, noncovalent-interaction, and quantum theory of atoms in molecules calculations were used to study and to gain a deeper understanding of both the adsorption mechanism and selectivity of metal ions onto the adsorbent. Accordingly, metal ions such as Pb(II), Cu(II), and Zn(II) were bidentate coordinated with the adsorbent by nitrogen and oxygen atoms of the Schiff base C=N and hydroxyl group -OH, respectively, to form stable complexes. Whereas Cd(II) was coordinated in a monodentate fashion with oxygen atom of the hydroxyl group. Furthermore, the affinity of SiNPz-Th toward the metal ions was decreased in the order of Pb(II) > Cu(II) > Zn(II) > Cd(II), in good agreement with the experimental results. All these results highlight that SiNPz-Th has good potential to be an advanced adsorbent for the removal of lead ions from real water.
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Affiliation(s)
- Said Tighadouini
- Laboratoire
de Synthèse Organique, Extraction et Valorisation, Faculté
des Sciences Aïn-Chock, Université
Hassan II Casablanca, Casablanca 20100, Maroc
| | - Smaail Radi
- Laboratoire
de Chimie Appliquée et Environnement (LCAE), Faculté
des Sciences, Université Mohamed
Premier, Oujda 60000, Morocco
- Centre
de l’Oriental des Sciences et Technologies de l’Eau
(COSTE), Université Mohamed Premier, Oujda 60000, Morocco
| | - Mohamed El Massaoudi
- Laboratoire
de Chimie Appliquée et Environnement (LCAE), Faculté
des Sciences, Université Mohamed
Premier, Oujda 60000, Morocco
| | - Zouhair Lakbaibi
- Laboratory
of Natural Substances & Synthesis and Molecular Dynamics, Department
of Chemistry, Faculty of Sciences and Techniques Errachidia, My Ismail University, BP 509 Boutalamine, Errachidia 52000, Morocco
| | - Marilena Ferbinteanu
- Faculty
of Chemistry, Inorganic Chemistry Department, University of Bucharest, Dumbrava Rosie 23, Bucharest 020462, Romania
| | - Yann Garcia
- Institute
of Condensed Matter and Nanosciences, Molecular Chemistry, Materials
and Catalysis Division (IMCN/MOST), Université
Catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve 1348, Belgium
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Omidi AH, Cheraghi M, Lorestani B, Sobhanardakani S, Jafari A. The biochars prepared from cinnamon and cannabis as nature-friendly adsorbents for removal of Cd(II) ions from aqueous solutions. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2954-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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43
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Yu S, Cui J, Wang J, Zhong C, Wang X, Wang N. Facile fabrication of Cu(II) coordinated chitosan-based magnetic material for effective adsorption of reactive brilliant red from aqueous solution. Int J Biol Macromol 2020; 149:562-571. [DOI: 10.1016/j.ijbiomac.2020.01.285] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/28/2020] [Accepted: 01/28/2020] [Indexed: 10/25/2022]
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44
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Meng X, Li J, Lv Y, Feng Y, Zhong Y. Electro-membrane extraction of cadmium(II) by bis(2-ethylhexyl) phosphate/kerosene/polyvinyl chloride polymer inclusion membrane. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121990. [PMID: 31896009 DOI: 10.1016/j.jhazmat.2019.121990] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/25/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
The development of the electroplating and battery industries has increased the environmental problems and the needs for resource recovery of Cd(II). In this study, the Electro-membrane extraction (EME) behaviour of Cd(II) was investigated by using polymer inclusion membrane with bis(2-ethylhexyl) phosphate as carrier and polyvinyl chloride as base polymer(PD-PIM) at 0-80 V. Results showed that the EME of Cd(II) by PD-PIM can be obtained in the feed phase with pH 3-8 and stripping phase of dilute acid. Voltage is the main factor to increase the mass transfer rate of Cd(II). The applied electric field reduced the mass transfer activation energy of Cd(II) by PD-PIM and weakened the mass transfer interference of Cd(II) on the background material of the feed phase. After using kerosene-stabilised PD-PIM for operation at pH5, 60 V for 120 h, Cd(II) in the 1 L solution reduced from 15 mg/L to 0.08 mg/L, and the enrichment factor was 9.79.
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Affiliation(s)
- Xiaorong Meng
- School of Chemistry & Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resources, Environmental and Ecology, Ministry of Education, China; Key Laboratory of Environmental Engineering, Shaanxi Province, China.
| | - Jiawen Li
- School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yongtao Lv
- School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yeyuan Feng
- School of Chemistry & Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yuanyuan Zhong
- School of Chemistry & Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
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Wang Z, Wu Q, Zhang J, Zhang H, Feng J, Dong S, Sun J. In situ polymerization of magnetic graphene oxide-diaminopyridine composite for the effective adsorption of Pb(II) and application in battery industry wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:33427-33439. [PMID: 31522403 DOI: 10.1007/s11356-019-06511-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
The efficient removal of heavy metals from aqueous environment is imperative and challenging. A novel ternary composite constructed of diaminopyridine polymers, graphene oxide, and ferrite magnetic nanoparticles was designed by a facile in situ polymerization strategy for the removal of Pb(II) from aqueous solution. Detailed characterization of morphological, chemical, and magnetic properties was employed systematically to confirm the formation of the composite material. Batch adsorption experiment studies suggested that the composite was an excellent adsorbent for Pb(II) which was easily collected after use via exposure to an external magnetic field for 30 s. The effects of different parameters such as solution pH, adsorbent dosage, contact time, initial Pb(II) concentration, temperature, and co-existing ions were examined. The maximum adsorption capacity at pH = 5 was estimated to be 387.2 mg g-1 at 298 K by the Langmuir isotherm model, accompanied by favorable adsorption recyclability according to the investigation of regeneration experiments. Thermodynamic studies revealed that the Pb(II) adsorption via our ternary composite was endothermic and spontaneous. The corresponding removal performance for effluent containing Pb(II) from the battery industry was successfully examined. The present results indicated that our designed adsorbent is beneficial to the practical Pb(II) removal in wastewater purification.
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Affiliation(s)
- Zongwu Wang
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, Henan, People's Republic of China
- Department of Environment Engineering, Yellow River Conservancy Technical Institute, Kaifeng Key Laboratory of Green Coating Materials, Kaifeng, 475004, Henan, People's Republic of China
| | - Qing Wu
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, Henan, People's Republic of China
| | - Jing Zhang
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, Henan, People's Republic of China
| | - Huan Zhang
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, Henan, People's Republic of China
| | - Jinglan Feng
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, Henan, People's Republic of China
| | - Shuying Dong
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, Henan, People's Republic of China.
| | - Jianhui Sun
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, Henan, People's Republic of China.
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46
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Zhou G, Wang Y, Zhou R, Wang C, Jin Y, Qiu J, Hua C, Cao Y. Synthesis of amino-functionalized bentonite/CoFe 2O 4@MnO 2 magnetic recoverable nanoparticles for aqueous Cd 2+ removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 682:505-513. [PMID: 31129538 DOI: 10.1016/j.scitotenv.2019.05.218] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 05/08/2019] [Accepted: 05/15/2019] [Indexed: 06/09/2023]
Abstract
Magnetic nano-composite materials have been attracting considerable attention due to their unique properties and versatile applications. In this study, a novel magnetic amino-functionalized conjugate adsorbent, named as bentonite/CoFe2O4@MnO2-NH2 (BCFMNs), was synthesized by combining APTES and MnO2 with magnetic bentonite. XRD, FT-IR, SEM, EDS, TEM, and VSM techniques were used to characterize its structure and magnetic properties. Results were in indicative of productive synthesis, well-defined architecture and satisfactory magnetism. BET examinations illustrated 84.97m2/g of specific surface area, 0.15cm3/g of pore volume and 7.02nm average pore size. The effect parameters such as adsorbent dosage, contact time, initial concentration and ion selectivity and recycling were evaluated and optimized systematically. Also, the metal concentrations were measured by ICP-MS spectrometer. The feasibility of the BCFMNs for removal of Cd2+ from aqueous solution was also evaluated by adsorption experiments with the maximal adsorption efficiency for Cd2+ up to 98.88%. Cd2+ adsorption could be interpreted by the Langmuir adsorption isotherm and the maximum adsorption capacity was 115.79mg/g. The results revealed that the adsorbent still had higher selectivity of Cd2+ removal even in the presence of high concentration coexisting cations. The as-prepared magnetic conjugate adsorbent could be recycled by taking advantage of its magnetic properties. The distinctive structure of BCFMNs and its excellent adsorption performance of cadmium reflects its prospective application in water treatment.
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Affiliation(s)
- Guangzhu Zhou
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Yue Wang
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Runsheng Zhou
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Cuizhen Wang
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Yuqin Jin
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Jun Qiu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Chunyu Hua
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Yiyun Cao
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
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47
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Zhu W, Dang Q, Liu C, Yu D, Chang G, Pu X, Wang Q, Sun H, Zhang B, Cha D. Cr(VI) and Pb(II) capture on pH-responsive polyethyleneimine and chloroacetic acid functionalized chitosan microspheres. Carbohydr Polym 2019; 219:353-367. [DOI: 10.1016/j.carbpol.2019.05.046] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 12/14/2022]
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48
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Yu S, Cui J, Jiang H, Zhong C, Meng J. Facile fabrication of functional chitosan microspheres and study on their effective cationic/anionic dyes removal from aqueous solution. Int J Biol Macromol 2019; 134:830-837. [DOI: 10.1016/j.ijbiomac.2019.04.208] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/14/2019] [Accepted: 04/30/2019] [Indexed: 12/19/2022]
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49
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Li X, Deng G, Zhang Y, Wang J. Rapid removal of copper ions from aqueous media by hollow polymer nanoparticles. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.02.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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50
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Tighadouini S, Radi S, Ferbinteanu M, Garcia Y. Highly Selective Removal of Pb(II) by a Pyridylpyrazole-β-ketoenol Receptor Covalently Bonded onto the Silica Surface. ACS OMEGA 2019; 4:3954-3964. [PMID: 31459604 PMCID: PMC6647973 DOI: 10.1021/acsomega.8b03642] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 02/07/2019] [Indexed: 05/14/2023]
Abstract
Efficient materials capable of capturing toxic metals from water are widely needed. Herein, a new pyridylpyrazole-β-ketoenol receptor, X-ray diffraction analyzed, was covalently incorporated into the silica surface to produce solid and recyclable adsorbent particles. The new material, fully characterized, revealed extremely efficient removal of toxic metals from water, with a selectivity order of Pb(II) > Zn(II) > Cu(II) > Cd(II). The adsorption was exceptionally rapid at optimum pH and concentrations, showing Pb(II) removal of 93 mg g-1 within 5 min and maximum Pb(II) adsorption of 110 mg g-1 after only 20 min. Sorption isotherms agreed well with the Langmuir model suggesting a monolayer adsorption, whereas kinetics agreed with the pseudo-second-order model suggesting a chemisorption binding mechanism. Thermodynamics of adsorption were fitted with an endothermic and spontaneous process. The material, recyclable for at least five cycles, is therefore promising for the cleanup of water polluted by toxic metals, especially lead.
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Affiliation(s)
- Said Tighadouini
- Laboratoire
de Chimie Appliquée et Environnement (LCAE), Faculté
des Sciences and Centre de l’Oriental des Sciences et Technologies de l’Eau
(COSTE), Université Mohamed Premier, 60000 Oujda, Morocco
| | - Smaail Radi
- Laboratoire
de Chimie Appliquée et Environnement (LCAE), Faculté
des Sciences and Centre de l’Oriental des Sciences et Technologies de l’Eau
(COSTE), Université Mohamed Premier, 60000 Oujda, Morocco
| | - Marilena Ferbinteanu
- Faculty
of Chemistry, Inorganic Chemistry Department, University of Bucharest, Dumbrava Rosie 23, 020462 Bucharest, Romania
| | - Yann Garcia
- Institute
of Condensed Matter and Nanosciences, Université
catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
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