1
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Lazar MM, Ghiorghita CA, Dragan ES, Humelnicu D, Dinu MV. Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution. Molecules 2023; 28:molecules28062798. [PMID: 36985770 PMCID: PMC10055817 DOI: 10.3390/molecules28062798] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/17/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
The introduction of selective recognition sites toward certain heavy metal ions (HMIs) is a great challenge, which has a major role when the separation of species with similar physicochemical features is considered. In this context, ion-imprinted polymers (IIPs) developed based on the principle of molecular imprinting methodology, have emerged as an innovative solution. Recent advances in IIPs have shown that they exhibit higher selectivity coefficients than non-imprinted ones, which could support a large range of environmental applications starting from extraction and monitoring of HMIs to their detection and quantification. This review will emphasize the application of IIPs for selective removal of transition metal ions (including HMIs, precious metal ions, radionuclides, and rare earth metal ions) from aqueous solution by critically analyzing the most relevant literature studies from the last decade. In the first part of this review, the chemical components of IIPs, the main ion-imprinting technologies as well as the characterization methods used to evaluate the binding properties are briefly presented. In the second part, synthesis parameters, adsorption performance, and a descriptive analysis of solid phase extraction of heavy metal ions by various IIPs are provided.
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Affiliation(s)
- Maria Marinela Lazar
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
| | - Claudiu-Augustin Ghiorghita
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
| | - Ecaterina Stela Dragan
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
| | - Doina Humelnicu
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, Carol I Bd. 11, 700506 Iasi, Romania
| | - Maria Valentina Dinu
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
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2
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Wang K, Zhang F, Xu K, Che Y, Qi M, Song C. Modified magnetic chitosan materials for heavy metal adsorption: a review. RSC Adv 2023; 13:6713-6736. [PMID: 36860541 PMCID: PMC9969337 DOI: 10.1039/d2ra07112f] [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: 11/09/2022] [Accepted: 02/07/2023] [Indexed: 03/02/2023] Open
Abstract
Magnetic chitosan materials have the characteristics of both chitosan and magnetic particle nuclei, showing the characteristics of easy separation and recovery, strong adsorption capacity and high mechanical strength, and have received extensive attention in adsorption, especially in the treatment of heavy metal ions. In order to further improve its performance, many studies have modified magnetic chitosan materials. This review discusses the strategies for the preparation of magnetic chitosan using coprecipitation, crosslinking, and other methods in detail. Besides, this review mainly summarizes the application of modified magnetic chitosan materials in the removal of heavy metal ions in wastewater in recent years. Finally, this review also discusses the adsorption mechanism, and puts forward the prospect of the future development of magnetic chitosan in wastewater treatment.
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Affiliation(s)
- Ke Wang
- Marine College, Shandong University Weihai 264209 China
| | - Fanbing Zhang
- Marine College, Shandong University Weihai 264209 China
| | - Kexin Xu
- Marine College, Shandong University Weihai 264209 China
| | - Yuju Che
- Marine College, Shandong University Weihai 264209 China
| | - Mingying Qi
- Marine College, Shandong University Weihai 264209 China
| | - Cui Song
- Marine College, Shandong University Weihai 264209 China
- Shandong University-Weihai Research Institute of Industrial Technology Weihai 264209 China
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3
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Liu J, Zhou R, Yu J, Guo L, Li X, Xiao C, Hou H, Chi R, Feng G. Simultaneous removal of lead, manganese, and copper released from the copper tailings by a novel magnetic modified biosorbent. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 322:116157. [PMID: 36070649 DOI: 10.1016/j.jenvman.2022.116157] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/11/2022] [Accepted: 08/29/2022] [Indexed: 05/16/2023]
Abstract
Potentially toxic elements including lead (Pb), manganese (Mn), and copper (Cu) released from copper tailings would cause severe long-term environmental risks and potential threats to human health. To prevent these negative effects caused by the release of the metals, a novel magnetic carboxyl groups modified bagasse with high adsorption affinity and strong magnetism was synthesized through an in-situ precipitation method and used to simultaneously remove Pb, Mn, and Cu from the eluate of copper tailings. Results showed that release of Pb, Mn, and Cu from the copper tailings was pH, time, and particle size dependent, and maximum concentrations of them released in the eluate was 1.7, 1.9, and 4.1 mg L-1 under weak acid conditions. Batch adsorption experiment showed that the as-synthesized magnetic modified bagasse could selectively absorb Pb, Mn, and Cu from a complex solution with adsorption capacity of 137.3, 13.1, and 90.0 mg g-1, respectively. X-ray photoelectron spectroscopy (XPS) and energy dispersive spectroscopy-mapping (EDS-mapping) demonstrated that Pb, Mn, and Cu interacted with the magnetic modified biosorbent mainly through coordination and ion exchange. Column experiments showed that higher than 99.5% of the released Pb, Mn, and Cu could be simultaneously removed by the magnetic modified bagasse, and the maximum concentrations of them released in the eluate of the copper tailings were all decreased to lower than 0.01 mg L-1, which reached the discharge standards. After recycled by a magnet, the magnetic modified bagasse could be collected easily and used repeatedly. Because of the high efficiency and easy recovery, the used method had great practical application value in removal of potentially toxic elements released from metallic tailings.
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Affiliation(s)
- Jiequan Liu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Ruyi Zhou
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China; School of Biological Engineering, Wuhan Polytechnic, Wuhan, China
| | - Junxia Yu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China.
| | - Li Guo
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China.
| | - Xiaodi Li
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Chunqiao Xiao
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Haobo Hou
- Wuhan Univ. (Zhaoqing) GD, HK and MO Environ Technol Research INST, Zhaoqing, Guangdong, China
| | - Ruan Chi
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Guoqing Feng
- Hubei Fuxing Environmental Protection Engineering Co. LTD, Hanchuan, Hubei, China
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4
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Hakke VS, Landge VK, Sonawane SH, Babu GUB, Manickam S, Boczkaj G. Cu(
II
) ions removal from wastewater using starch nanoparticles (
SNPs
): An Eco‐sustainable approach. CAN J CHEM ENG 2022. [DOI: 10.1002/cjce.24588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vikas S. Hakke
- Department of Chemical Engineering National Institute of Technology Warangal Warangal TS India
| | - Vividha K. Landge
- Department of Chemical Engineering National Institute of Technology Warangal Warangal TS India
| | - Shirish H. Sonawane
- Department of Chemical Engineering National Institute of Technology Warangal Warangal TS India
| | - G. Uday Bhaskar Babu
- Department of Chemical Engineering National Institute of Technology Warangal Warangal TS India
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan Brunei Darussalam Brunei
| | - Grzegorz Boczkaj
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering Gdansk University of Technology Poland
- EkoTech Center Gdansk University of Technology, G. Narutowicza St. 11/12, 80‐233 Gdansk Poland
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Wang R, lin J, Huang SH, Wang QY, Hu Q, Peng S, Wu LN, Zhou QH. Disulfide Cross-Linked Poly(Methacrylic Acid) Iron Oxide Nanoparticles for Efficiently Selective Adsorption of Pb(II) from Aqueous Solutions. ACS OMEGA 2021; 6:976-987. [PMID: 33458549 PMCID: PMC7808134 DOI: 10.1021/acsomega.0c05623] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 12/14/2020] [Indexed: 05/15/2023]
Abstract
The efficient selectivity of heavy metal ions from wastewater is still challenging but gains great public attention in water treatment on a world scale. In this study, the novel disulfide cross-linked poly(methacrylic acid) iron oxide (Fe3O4@S-S/PMAA) nanoparticles with selective adsorption, improved adsorption capability, and economic reusability were designed and prepared for selective adsorption of Pb(II) ions in aqueous solution. In this study, nuclear magnetic resonance, dynamic light scattering, scanning electron microscopy, X-ray diffraction, vibrating sample magnetometry, and thermogravimetric analysis were utilized to study the chemophysical properties of Fe3O4@S-S/PMAA. The effect of different factors on adsorption properties of the Fe3O4@S-S/PMAA nanoparticles for Co(II) and Pb(II) ions in aqueous solution was explored by batch adsorption experiments. For adsorption mechanism investigation, the adsorption of Fe3O4@S-S/PMAA for Co(II) and Pb(II) ions can be better fitted by a pseudo-second-order model, and the adsorption process of Fe3O4@S-S/PMAA for Co(II) and Pb(II) matches well with the Freundlich isotherm equation. Notably, in the adsorption experiments, the Fe3O4@S-S/PMAA nanoparticles were demonstrated to have a maximum adsorption capacity of 48.7 mg·g-1 on Pb(II) ions with a selective adsorption order of Pb2+ > Co2+ > Cd2+ > Ni2+ > Cu2+ > Zn2+ > K+ > Na+ > Mg2+ > Ca2+ in the selective experiments. In the regeneration experiments, the Fe3O4@S-S/PMAA nanoparticles could be easily recovered by desorbing heavy metal ions from the adsorbents with eluents and showed good adsorption capacity for Co(II) and Pb(II) after eight recycles. In brief, compared to other traditional nanoadsorbents, the as-prepared Fe3O4@S-S/PMAA with improved adsorption capability and high regeneration efficiency demonstrated remarkable affinity for adsorption of Pb(II) ions, which will provide a novel technical platform for selective removal of heavy metal ions from actual polluted water.
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Affiliation(s)
- Rui Wang
- Key
Laboratory of Basic Chemistry of the National Ethnic Affairs Commission,
School of Chemistry and Environment, Southwest
Minzu University, First Ring Road, 4th Section No. 16, 610041 Chengdu, China
| | - Juan lin
- School
of Biomedical Sciences and Technology, Chengdu
Medical College, Xindu Road No. 783, 610500 Chengdu, China
| | - Shuang-hui Huang
- Key
Laboratory of Basic Chemistry of the National Ethnic Affairs Commission,
School of Chemistry and Environment, Southwest
Minzu University, First Ring Road, 4th Section No. 16, 610041 Chengdu, China
| | - Qiu-yue Wang
- Key
Laboratory of Basic Chemistry of the National Ethnic Affairs Commission,
School of Chemistry and Environment, Southwest
Minzu University, First Ring Road, 4th Section No. 16, 610041 Chengdu, China
| | - Qiuhui Hu
- Key
Laboratory of Basic Chemistry of the National Ethnic Affairs Commission,
School of Chemistry and Environment, Southwest
Minzu University, First Ring Road, 4th Section No. 16, 610041 Chengdu, China
| | - Si Peng
- Key
Laboratory of Basic Chemistry of the National Ethnic Affairs Commission,
School of Chemistry and Environment, Southwest
Minzu University, First Ring Road, 4th Section No. 16, 610041 Chengdu, China
| | - Li-na Wu
- Department
of Anatomy and Histology and Embryology, Development and Regeneration
Key Laboratory of Sichuan Province, Chengdu
Medical College, Xindu Road No. 783, 610500 Chengdu, China
| | - Qing-han Zhou
- Key
Laboratory of Basic Chemistry of the National Ethnic Affairs Commission,
School of Chemistry and Environment, Southwest
Minzu University, First Ring Road, 4th Section No. 16, 610041 Chengdu, China
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6
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Batur E, Baytar O, Kutluay S, Horoz S, Şahin Ö. A comprehensive new study on the removal of Pb (II) from aqueous solution by şırnak coal-derived char. ENVIRONMENTAL TECHNOLOGY 2021; 42:505-520. [PMID: 32804581 DOI: 10.1080/09593330.2020.1811397] [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: 06/15/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
In this study, char was prepared from the Şırnak coal derivative as a new adsorbent by the pyrolysis process and successfully applied for Pb (II) removal. Prepared char adsorbent was characterized by analysis techniques such as thermogravimetric (TG)/differential thermogravimetric (DTG), iodine number, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET) surface area. In the experimental design of the Pb (II) removal process, the relationship between operating factors (contact time, initial Pb (II) concentration and temperature) and process responses (adsorption capacity and removal efficiency) was modelled by applying response surface methodology (RSM). After that, the operating factors for the maximum adsorption capacity and removal efficiency of Pb (II) by char were optimized. In the removal of Pb (II), pseudo-first order and pseudo-second order kinetic models were used to determine the process mechanism. In addition, adsorption isotherm models such as Langmuir, Freundlich, and Dubinin-Radushkevich were applied to the equilibrium data to explain the adsorption mechanism between the adsorbent and adsorbate molecules. According to the results obtained, it was determined that kinetic and equilibrium isotherm data were better defined with pseudo-second order kinetic and Dubinin-Radushkevich isotherm models, respectively. The optimum values of the contact time, initial Pb (II) concentration, and temperature for maximum adsorption capacity (124.64 mg/g) and removal efficiency (92.35%) of Pb (II) were found as 150.00 min, 144.81 ppm, and 35.06°C, respectively. This study indicated the application potential of Şırnak coal-derived char as a promising cost-effective adsorbent for the removal of heavy metals.
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Affiliation(s)
- Ebru Batur
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
| | - Orhan Baytar
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
| | - Sinan Kutluay
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
| | - Sabit Horoz
- Department of Electrical &Electronics Engineering, Siirt University, Siirt, Turkey
| | - Ömer Şahin
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
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7
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Optimization on preparation of Fe3O4/chitosan as potential matrix material for the removal of microcystin-LR and its evaluation of adsorption properties. Int J Biol Macromol 2020; 156:1574-1583. [DOI: 10.1016/j.ijbiomac.2019.11.209] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 11/20/2019] [Accepted: 11/26/2019] [Indexed: 11/21/2022]
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8
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Rastogi S, Kandasubramanian B. Progressive trends in heavy metal ions and dyes adsorption using silk fibroin composites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:210-237. [PMID: 31836992 DOI: 10.1007/s11356-019-07280-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Thriving industrialization for human lifestyle headway has seeded the roots of water intoxication with harmful and hazardous toxic metal ions and dyes, which may ingress into food chains and become homicidal or mutation causing for creatures. The degummed functionalized silk fibroin composites with different biomaterials and synthetic materials are able to show adsorption efficiencies equivalent to 52.5%, 90%, 81.1%, 93.75%, 84.2%, and 98.9% for chromium, copper, cadmium, lead, thorium, and uranium ions, respectively, and adsorption capacity of 88.5 mg/g, 74.63 mg/g, 76.34 mg/g, and 72 mg/L for acid yellow 11, naphthol orange, direct orange S, and methylene blue, respectively, which make them desirable solution for water toxicants removal. This review is intended to describe the ability of silk fibroins to adsorb and abolish toxic heavy metal ions and dyes from water reservoirs, thus, providing a way to step toward water sanitation and wholesome living. Graphical abstract.
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Affiliation(s)
- Shivani Rastogi
- Nanomaterials Characterization Lab, Center for Converging Technologies, University of Rajasthan, JLN Marg, Jaipur, Rajasthan, 302017, India
| | - Balasubramanian Kandasubramanian
- Nano Surface Texturing Lab, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Girinagar, Pune, 411025, India.
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9
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Yi J, Wu P, Li G, Xiao W, Li L, He Y, He Y, Ding P, Chen C. A composite prepared from carboxymethyl chitosan and aptamer-modified gold nanoparticles for the colorimetric determination of Salmonella typhimurium. Mikrochim Acta 2019; 186:711. [PMID: 31650251 DOI: 10.1007/s00604-019-3827-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 09/14/2019] [Indexed: 11/27/2022]
Abstract
An aptamer-based assay is described for the determination of Salmonella typhimurium (S. typh). Carboxymethyl chitosan was loaded with amino-modified aptamer against S. typh, and then adsorbed on gold nanoparticles by electrostatic interaction to form a composite that acts as the molecular recognition element. In the presence of S. typh, it will be bound by the aptamer, and this changes the structure of the recognition element. On addition of salt solution, the gold nanoparticles agglomerate so that the color of the solution changes from red to blue. S. typh can be detected via measurement of the absorbance at 550 nm. Absorbance increases linearly with the logarithm of the S. typh concentration in the range from 100 to 109 cfu·mL-1. The limit of detection is 16 cfu·mL-1. The specificity and practicability of the assay were evaluated. The recoveries of S. typh from spiked milk samples are between 92.4 and 97.2%. The analytical results are basically consistent with those of a plate counting method. Graphical abstract Schematic representation of the colorimetric assay for Salmonella typhimuium (S. typh) using carboxymethyl chitosan (CMCS)-aptamer (Apt)-gold nanoparticles (AuNPs) composites.
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Affiliation(s)
- Jiecan Yi
- Xiang Ya School of Public Health, Central South University, Changsha, 410078, Hunan, China
| | - Pian Wu
- Xiang Ya School of Public Health, Central South University, Changsha, 410078, Hunan, China
| | - Guiyin Li
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, 541014, Guangxi, China
| | - Wen Xiao
- Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, 410000, Hunan, China
| | - Lei Li
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Yayuan He
- Xiang Ya School of Public Health, Central South University, Changsha, 410078, Hunan, China
| | - Yafei He
- Xiang Ya School of Public Health, Central South University, Changsha, 410078, Hunan, China
| | - Ping Ding
- Xiang Ya School of Public Health, Central South University, Changsha, 410078, Hunan, China.
| | - Cuimei Chen
- School of Public Health, Xiangnan University, Chenzhou, 423000, Hunan, China.
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10
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He Y, Wu P, Xiao W, Li G, Yi J, He Y, Chen C, Ding P, Duan Y. Efficient removal of Pb(II) from aqueous solution by a novel ion imprinted magnetic biosorbent: Adsorption kinetics and mechanisms. PLoS One 2019; 14:e0213377. [PMID: 30917141 PMCID: PMC6437713 DOI: 10.1371/journal.pone.0213377] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 02/19/2019] [Indexed: 11/19/2022] Open
Abstract
It is vital to understand the adsorption mechanisms and identify the adsorption
kinetics when applying an adsorbent to remove heavy metals from aqueous
solution. A Pb(II) imprinted magnetic biosorbent (Pb(II)-IMB) was developed for
the removal of Pb2+ via lead ion imprinting technology and
crosslinking reactions among chitosan (CTS), Serratia
marcescens and Fe3O4. The effect of different
parameters such as solution pH, adsorbent dosage, selectivity sorption and
desorption were investigated on the absorption of lead ion by Pb(II)-IMB. The
adsorbent was characterized by a Brunauer-Emmett Teller (BET) analysis, X-ray
diffraction (XRD), vibrating sample magnetometry (VSM), scanning electron
microscopy (SEM) and energy dispersive spectrometry (EDS). The adsorption
kinetics, equilibrium and thermodynamics of Pb(II)-IMB for Pb(II) were studied.
The results of the abovementioned analyses showed that the adsorption kinetic
process fit well with the second-order equation. The adsorption isotherm process
of Pb(II) on the Pb(II)-IMB was closely related to the Langmuir model.
Thermodynamic studies suggested the spontaneous and endothermic nature of
adsorption of Pb(II) by Pb(II)-IMB. The adsorption mechanism of Pb(II)-IMB was
studied by Fourier transform infrared spectroscopy (FTIR) and X-ray
photoelectron spectroscopy (XPS). The results indicated that the nitrogen in the
amino group and the oxygen in the hydroxyl group of Pb(II)-IMB were coordination
atoms.
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Affiliation(s)
- Yayuan He
- Xiang Ya School of Public Health, Central South University,
Changsha,Hunan, China
| | - Pian Wu
- Xiang Ya School of Public Health, Central South University,
Changsha,Hunan, China
| | - Wen Xiao
- Hunan Institute of Food Quality Supervision Inspection and Research,
Changsha, Hunan, China
| | - Guiyin Li
- School of Life and Environmental Sciences, Guilin University of
Electronic Technology, Guilin, Guangxi, China
| | - Jiecan Yi
- Xiang Ya School of Public Health, Central South University,
Changsha,Hunan, China
| | - Yafei He
- Xiang Ya School of Public Health, Central South University,
Changsha,Hunan, China
| | | | - Ping Ding
- Xiang Ya School of Public Health, Central South University,
Changsha,Hunan, China
- * E-mail: (PD); (YD)
| | - Yanying Duan
- Xiang Ya School of Public Health, Central South University,
Changsha,Hunan, China
- * E-mail: (PD); (YD)
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