Ion imprinted cryogels for selective removal of Ni(II) ions from aqueous solutions

Tamahkar, Emel; Bakhshpour, Monireh; Andaç, Müge; Deni̇zli̇, Adil

doi:10.1016/j.seppur.2016.12.048

Cited by 58 publications

(18 citation statements)

References 48 publications

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“…In a study conducted by Tamahkar et al [44], nickel (II)-imprinted polymeric cryogels were prepared. Two different nickel (II)-imprinted polymeric cryogels were synthesized with different functional monomer/template complexing molar ratios.…”

Section: Removal Of Metal Ions With Imprinted Materialsmentioning

confidence: 99%

Molecularly Imprinted Polymers for Removal of Metal Ions: An Alternative Treatment Method

et al. 2018

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Aquatic and terrestrial environment and human health have been seriously threatened with the release of metal-containing wastewater by the rapid growth in the industry. There are various methods which have been used for removal of ions from the environment, such as membrane filtration, ion exchange, membrane assisted liquid extraction and adsorption. As a sort of special innovation, a polymerization technique, namely molecular imprinting is carried out by specific identification for the target by mixing it with a functional monomer. After the polymerization occurred, the target ion can be removed with suitable methods. At the end of this process, specific cavities, namely binding sites, are able to recognize target ions selectively. However, the selectivity of the molecularly imprinted polymer is variable not only because of the type of ligand but also charge, size coordination number, and geometry of the target ion. In this review, metal ion-imprinted polymeric materials that can be applied for metal ion removal from different sources are discussed and exemplified briefly with different metal ions.

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Section: Removal Of Metal Ions With Imprinted Materialsmentioning

confidence: 99%

Molecularly Imprinted Polymers for Removal of Metal Ions: An Alternative Treatment Method

et al. 2018

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“…37 polymerization of MAH in the presence of polyethyleneglycoldimethacrylate that achieved the maximum binding amount as 5.54 mg g −1 . 39 Ashouri et al synthesized nickelimprinted polymers via bulk polymerization and they reported the maximum adsorption amount of Ni(II) as 3.26 mg g −1 when using 2-vinylpyridine as the functional monomer and diphenylcarbazone as the ligand. 40 Nacano et al found the maximum adsorption capacity of the prepared nickel-imprinted polymers using 2-aminoethyl-3-aminobutylmethyldimethoxysilane as functional monomer as 5.44 mg g −1 .…”

Section: The Effect Of Initial Concentrationmentioning

confidence: 99%

Molecularly imprinted smart cryogels for selective nickel recognition in aqueous solutions

Andaç

Tamahkar

Deni̇zli̇

2020

J of Applied Polymer Sci

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Smart polymers with fast response to slight changes show high practicability in separation and removal applications, such as water and wastewater treatment. Molecular imprinted polymers (MIPs) are designed to possess specific binding sites enabling the recognition of the target analytes. In this article, the newly synthesized smart adsorbents were used for the selective removal of nickel [Ni(II)] ions from aqueous solutions, which have dual (pH and temperature) memory for the recognition of Ni(II) ions due to the self-assembled recognition sites in MIP structure. The Ni(II)-MIP smart cryogels were prepared by cryopolymerization of N-isopropylacrylamide (NIPAm) and N-methacryloyl-Lhistidine (MAH) monomers to incorporate their smart features for removal of Ni(II) ions in a selective and temperature-modulated way. The maximum binding capacity of Ni(II) ions onto MIP smart cryogel was determined at pH 6 as 414 μg g −1 at 20 C and only 104.5 μg g −1 at 40 C, respectively. The adsorption reached an equilibrium within 30 min, while 85% of the bound amount of Ni(II) ions was achieved in only 15 min. This unique MIP cryogel as a smart and selective adsorbent was able to remove Ni(II) ions immediately by a significant temperature and pH change as an alternative application for water and wastewater treatment.

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“…Atıksulardan veya sulu çözeltilerden kirletici gideriminde kullanılan bir çok proses ve metod bulunmaktadır. Bunlar arasında en yaygın olanları ise fenton [7], elektrokoagülasyon [8], membran [9,10], iyon değişimi [11,12], oksidasyon [13] filtrasyon [14] ve adsorpsiyon [15,16] prosesidir. Adsorpsiyon etkili ve kolay kirletici giderim uygulanması ile bilinen bir prosestir [17,18].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Fiziksel ve kimyasal olarak modifiye edilmiş proses atığının sentetik atıksudan ağır metal gideriminde başarısının araştırılması

Öden

2019

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Highlights:Graphical/Tabular Abstract Removal of Ni(II) ions by using modified process waste in adsorption system, Isoterm equilibrium models and reaction kinetics of adsorption, Dosage, contact time, pH and mixing speed optimization This study investigated removal efficiency of nickel in adsorption system by using the process waste obtained from the exit point of ore processing, modified with ultrasound and acid in laboratory. The experimental study was conducted in an intermittent process by taking into account the criteria of different adsorbent dosages, pH , contact times and mixing speeds. The experimental schema is shown in figure A. Figure A. Laboratory scale model working process diagramPurpose: The aim of this study is to investigate the importance, success and adsorption performance of an economical treatment process by using the modified process waste (MPA) output waste (with sound and acid) by synthetic wastewater containing Ni (II) ions. Theory and Methods: Etibor Colemanite and Ulexite Production Plant (Eti Mine Works GeneralDirectorate Bigadiç Boron Works Directorate), which is the material used in the absorption duty of heavy metal removal, was obtained from the area of the land in the field as a result of enrichment. All the chemicals used were studied by taking into consideration the standard methods and methods. All solutions and nickel stock solution were prepared and used with distilled water. Ni(NO3)2.6H2O dissolved stock solution was prepared in 1000 mL deionized water and all experiments were carried out under the same conditions. The volume of synthetic wastewater solution was determined as 100 mL during the determination of different dosage and optimization criteria. The purpose of the modification process was to improve the active surface ratio of process waste which is successful in removing different pollutants and to modify the active surface of HCl acid and ultrasound to prevent the soluble substances which are likely to give color to the water.Results: Chemical properties and SEM images pertaining to modified process waste (MPA) were specified. In nickel removal, it was observed that the obtained results were found more concordant with Langmuir Isotherm models as evidenced by correlation coefficients. Kinetics data were obtained from treatment results, and qmax value obtained for MPA was found as 25.77 mg/g. Conclusion:In the light of the data obtained from this study, it is thought that the modified adsorbent can be used to remove heavy metals from aqueous solutions. It should be kept in mind that raw wastewater tests should be carried out in order to be used in heavy metal removal from wastewaters.This study investigated removal efficiency of nickel in adsorption system by using the process waste obtained from the exit point of ore processing, modified with ultrasound and acid in laboratory. The experimental study was conducted in an intermittent process by taking into account the criteria of different adsorbent dosages (0,1-5 g/100 mL), pH (2-10), contact times (0-150 minutes) a...

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Ion imprinted cryogels for selective removal of Ni(II) ions from aqueous solutions

Cited by 58 publications

References 48 publications

Molecularly Imprinted Polymers for Removal of Metal Ions: An Alternative Treatment Method

Molecularly Imprinted Polymers for Removal of Metal Ions: An Alternative Treatment Method

Molecularly imprinted smart cryogels for selective nickel recognition in aqueous solutions

Fiziksel ve kimyasal olarak modifiye edilmiş proses atığının sentetik atıksudan ağır metal gideriminde başarısının araştırılması

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