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Morosanu I, Paduraru C, Bucatariu F, Fighir D, Mihai M, Teodosiu C. Shaping polyelectrolyte composites for heavy metals adsorption from wastewater: Experimental assessment and equilibrium studies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 321:115999. [PMID: 36104888 DOI: 10.1016/j.jenvman.2022.115999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/29/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Design of core/shell composite microparticles for loading/release of organic/inorganic pollutants is of great interest in wastewater treatment. As compared to the classic layer-by-layer strategy, the new approach presented in this study introduced higher organic shell amounts in one-pot deposition step, with less material and energy consumption and lack of toxic by-products formation. Herein, one weak polycation (polyethyleneimine) and two weak polyanions were directly deposited onto silica surface through precipitation of an in-situ formed interpolyelectrolyte coacervate, followed by selective crosslinking with glutaraldehyde and extraction of polyanion chains, confirmed by electrokinetic measurements and FTIR spectra of composites. Twelve composite sorbents were synthesized and tested for adsorption of cadmium, as model heavy metal ion. It was demonstrated that the high sorption occurred onto four newly synthesized composites which is correlated to the deposited shell amount, dependent on the deposition method, polyanion nature and crosslinking ratio. The Cd2+ sorbed amount increased with the polyelectrolyte deposited amount and with the accessibility toward active sorption site, less cross-linked composite shells sorbing higher amounts as compared to strong cross-linked shells, the molar ratio [active site]:[Cd2+] ranging from 16:1 to 26:1. The best fitting of four isotherm (Langmuir, Freundlich, Sips and Toth) and four kinetics (pseudo-first order, pseudo-second order, modified Freundlich and Elovich) models was assessed by the sum of normalized errors, based on different nonlinear regression error functions, and by the Hannah-Quinn information criterion. In general, the best agreement with the experimental data was found for Toth isotherm and the pseudo-second order kinetic model. Efficient regeneration of the sorbents was possible at least three times. The competitive effect of Pb2+ and Ni2+ ions was also studied in simulated and real systems. Silica composite sorbents with polyethyleneimine chains as major component of the shell could be very promising in wastewater treatment processes.
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Affiliation(s)
- Irina Morosanu
- Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050, Iasi, Romania
| | - Carmen Paduraru
- Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050, Iasi, Romania
| | - Florin Bucatariu
- Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050, Iasi, Romania; "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Daniela Fighir
- Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050, Iasi, Romania
| | - Marcela Mihai
- Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050, Iasi, Romania; "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
| | - Carmen Teodosiu
- Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050, Iasi, Romania.
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Preparation of PVA/waste oyster shell powder composite as an efficient adsorbent of heavy metals from wastewater. Heliyon 2022; 8:e11938. [DOI: 10.1016/j.heliyon.2022.e11938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/14/2022] [Accepted: 11/21/2022] [Indexed: 11/30/2022] Open
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Zaharia MM, Bucatariu F, Vasiliu AL, Mihai M. Stable and reusable acrylic ion-exchangers. From HMIs highly polluted tailing pond to safe and clean water. CHEMOSPHERE 2022; 304:135383. [PMID: 35718040 DOI: 10.1016/j.chemosphere.2022.135383] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
The application of several ion-exchange resins (IExR) with amino and amphoteric functionalities in batch retention of heavy metal ions (HMIs) (Cu(II), Fe(II), Mn(II), Zn(II)) from mono- and multicomponent simulated waters and from real polluted water collected from tailings pond of Tarnita (Suceava, Romania) sterile dump is deeply herein explored. The tested resins exhibited high sorption capacities, as evaluated by atomic absorption spectrometry, results supported by infrared spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. The effect of pH on the IExR sorption capacity in competitive condition evidenced the optimum pH where IExR sorption efficiency is maximum. Reutilization of IExR in six consecutive sorption/desorption/regeneration cycles showed their renewable sorption properties. Wheat germination tests demonstrated that the Tarnita collected water had a high toxic effect whereas the resulted supernatant after batch sorption was nontoxic. The study shows that HMIs content after IExR sorption is under the admitted maximum level for surface water, and represents an important step on the efforts to solve the environmental problem in Tarnita area, by removing the main contaminants found in the local river water.
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Affiliation(s)
- Marius-Mihai Zaharia
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Florin Bucatariu
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Ana-Lavinia Vasiliu
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Marcela Mihai
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
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Hydrogel Beads of Amidoximated Starch and Chitosan as Efficient Sorbents for Inorganic and Organic Compounds. Gels 2022; 8:gels8090549. [PMID: 36135261 PMCID: PMC9498570 DOI: 10.3390/gels8090549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
The synthesis of hydrogel beads involving natural polymers is, nowadays, a leading research area. Among natural polymers, starch and chitosan represent two biomolecules with proof of efficiency and low economic impact in various utilization fields. Therefore, herein, the features of hydrogel beads obtained from chitosan and three sorts of starch (potato, wheat and rise starches), grafted with acrylonitrile and then amidoximated, were deeply investigated for their use as sorbents for heavy metal ions and dyes. The hydrogel beads were prepared by ionotropic gelation/covalent cross-linking of chitosan and functionalized starches. The chemical structure of the hydrogel beads was analyzed by FT-IR spectroscopy; their morphology was revealed by optical and scanning electron microscopies, while the influence of the starch functionalization strategies on the crystallinity changes was evaluated by X-ray diffraction. Molecular dynamics simulations were used to reveal the influence of the grafting reactions and grafted structure on the starch conformation in solution and their interactions with chitosan. The sorption capacity of the hydrogel beads was tested in batch experiments, as a function of the beads’ features (synthesis protocol, starch sort) and simulated polluted water, which included heavy metal ions (Cu2+, Co2+, Ni2+ and Zn2+) and small organic molecules (Direct Blue 15 and Congo red).
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Niu YQ, Liu JH, Aymonier C, Fermani S, Kralj D, Falini G, Zhou CH. Calcium carbonate: controlled synthesis, surface functionalization, and nanostructured materials. Chem Soc Rev 2022; 51:7883-7943. [PMID: 35993776 DOI: 10.1039/d1cs00519g] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Calcium carbonate (CaCO3) is an important inorganic mineral in biological and geological systems. Traditionally, it is widely used in plastics, papermaking, ink, building materials, textiles, cosmetics, and food. Over the last decade, there has been rapid development in the controlled synthesis and surface modification of CaCO3, the stabilization of amorphous CaCO3 (ACC), and CaCO3-based nanostructured materials. In this review, the controlled synthesis of CaCO3 is first examined, including Ca2+-CO32- systems, solid-liquid-gas carbonation, water-in-oil reverse emulsions, and biomineralization. Advancing insights into the nucleation and crystallization of CaCO3 have led to the development of efficient routes towards the controlled synthesis of CaCO3 with specific sizes, morphologies, and polymorphs. Recently-developed surface modification methods of CaCO3 include organic and inorganic modifications, as well as intensified surface reactions. The resultant CaCO3 can then be further engineered via template-induced biomineralization and layer-by-layer assembly into porous, hollow, or core-shell organic-inorganic nanocomposites. The introduction of CaCO3 into nanostructured materials has led to a significant improvement in the mechanical, optical, magnetic, and catalytic properties of such materials, with the resultant CaCO3-based nanostructured materials showing great potential for use in biomaterials and biomedicine, environmental remediation, and energy production and storage. The influences that the preparation conditions and additives have on ACC preparation and stabilization are also discussed. Studies indicate that ACC can be used to construct environmentally-friendly hybrid films, supramolecular hydrogels, and drug vehicles. Finally, the existing challenges and future directions of the controlled synthesis and functionalization of CaCO3 and its expanding applications are highlighted.
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Affiliation(s)
- Yu-Qin Niu
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. .,Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
| | - Jia-Hui Liu
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. .,Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
| | - Cyril Aymonier
- Univ Bordeaux, ICMCB, Bordeaux INP, UMR 5026, CNRS, F-33600 Pessac, France
| | - Simona Fermani
- Department of Chemistry "Giacomo Ciamician", University of Bologna, Via Selmi 2, I-40126 Bologna, Italy. .,Interdepartmental Centre for Industrial Research Health Sciences & Technologies, University of Bologna, 40064 Bologna, Italy
| | - Damir Kralj
- Laboratory for Precipitation Processes, Ruđer Bošković Institute, P. O. Box 1016, HR-10001 Zagreb, Croatia
| | - Giuseppe Falini
- Department of Chemistry "Giacomo Ciamician", University of Bologna, Via Selmi 2, I-40126 Bologna, Italy.
| | - Chun-Hui Zhou
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China. .,Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
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Wang Z, Su J, Ali A, Yang W, Zhang R, Li Y, Zhang L, Li J. Chitosan and carboxymethyl chitosan mimic biomineralization and promote microbially induced calcium precipitation. Carbohydr Polym 2022; 287:119335. [DOI: 10.1016/j.carbpol.2022.119335] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/01/2022] [Accepted: 03/07/2022] [Indexed: 12/24/2022]
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Racovita S, Lungan M, Vasiliu A, Vasiliu S, Mihai M. Sorption Behavior of Grafted Porous Microparticles Based on Methacrylic Monomers and Chitosan/Gellan Gum towards Copper(II) and Nickel(II) Ions in Aqueous Solutions. ChemistrySelect 2021. [DOI: 10.1002/slct.202103223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Stefania Racovita
- Functional Polymers Petru Poni( Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, No. 41 A 700487 Iasi Romania
| | | | - Ana‐Lavinia Vasiliu
- Functional Polymers Petru Poni( Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, No. 41 A 700487 Iasi Romania
| | - Silvia Vasiliu
- Functional Polymers Petru Poni( Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, No. 41 A 700487 Iasi Romania
| | - Marcela Mihai
- Functional Polymers Petru Poni( Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, No. 41 A 700487 Iasi Romania
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Bucatariu F, Teodosiu C, Morosanu I, Fighir D, Ciobanu R, Petrila LM, Mihai M. An Overview on Composite Sorbents Based on Polyelectrolytes Used in Advanced Wastewater Treatment. Polymers (Basel) 2021; 13:3963. [PMID: 34833262 PMCID: PMC8625399 DOI: 10.3390/polym13223963] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/05/2021] [Accepted: 11/12/2021] [Indexed: 01/19/2023] Open
Abstract
Advanced wastewater treatment processes are required to implement wastewater reuse in agriculture or industry, the efficient removal of targeted priority and emerging organic & inorganic pollutants being compulsory (due to their eco-toxicological and human health effects, bio-accumulative, and degradation characteristics). Various processes such as membrane separations, adsorption, advanced oxidation, filtration, disinfection may be used in combination with one or more conventional treatment stages, but technical and environmental criteria are important to assess their application. Natural and synthetic polyelectrolytes combined with some inorganic materials or other organic or inorganic polymers create new materials (composites) that are currently used in sorption of toxic pollutants. The recent developments on the synthesis and characterization of composites based on polyelectrolytes, divided according to their macroscopic shape-beads, core-shell, gels, nanofibers, membranes-are discussed, and a correlation of their actual structure and properties with the adsorption mechanisms and removal efficiencies of various pollutants in aqueous media (priority and emerging pollutants or other model pollutants) are presented.
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Affiliation(s)
- Florin Bucatariu
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (F.B.); (L.-M.P.)
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania; (I.M.); (D.F.); (R.C.)
| | - Carmen Teodosiu
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania; (I.M.); (D.F.); (R.C.)
| | - Irina Morosanu
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania; (I.M.); (D.F.); (R.C.)
| | - Daniela Fighir
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania; (I.M.); (D.F.); (R.C.)
| | - Ramona Ciobanu
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania; (I.M.); (D.F.); (R.C.)
| | - Larisa-Maria Petrila
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (F.B.); (L.-M.P.)
| | - Marcela Mihai
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (F.B.); (L.-M.P.)
- Department of Environmental Engineering and Management, “Gheorghe Asachi” Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania; (I.M.); (D.F.); (R.C.)
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CaCO 3-coated PVA/BC-based composite for the simultaneous adsorption of Cu(II), Cd(II), Pb(II) in aqueous solution. Carbohydr Polym 2021; 267:118227. [PMID: 34119180 DOI: 10.1016/j.carbpol.2021.118227] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/13/2021] [Accepted: 05/16/2021] [Indexed: 01/09/2023]
Abstract
A polymer composite material comprising polyvinyl alcohol/bacterial cellulose/calcium carbonate (PVA/BC/CaCO3) was prepared for enabling the selective adsorption of toxic heavy metal ions, such as Cd(II), Cu(II), and Pb(II) from solution. FT-IR, SEM and XRD analyses confirmed the successful incorporation of CaCO3 into the PVA-based polymer by chemical cross-linking with epichlorohydrin. The optimal pH for adsorption of the metal ions onto PVA/BC/CaCO3 was determined to be 6.0. The pseudo-first-order kinetics model was best-suited for fitting the adsorption kinetics data, and the Langmuir model was best-suited for fitting the thermodynamic adsorption data. The maximum adsorption capacities of PVA/BC/CaCO3 for Cu(II), Pb(II), and Cd(II) were found to be 57.1, 513.6, and 238.6 mg/g, respectively, at 40 °C. In addition, the adsorbent was found to be highly recyclable. Overall, PVA/BC/CaCO3 adsorbent has the applicable potential in the removal of heavy metal ions from contaminated solution.
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