Removal of Cr(VI) from aqueous solution by a highly efficient chelating resin

Santander, Paola; Morales, Daniela V.; Rivas, Bernabé L.; Kabay, Nalan; Yilmaz, İdil; Kuşku, Özge; Yüksel, Mithat; Bryjak, Marek

doi:10.1007/s00289-016-1824-y

Cited by 11 publications

(4 citation statements)

References 44 publications

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“…Since these pollutants and their derivatives are carcinogenic and have toxic effect on humans, animals as well as aquatic plants and animals, they should be removed via wastewater treatment methods. According to that, several methods and materials have been developed for environmental clean-up and remediation of metal ions from wastewater and synthetic wastewater, such as adsorption, also by using biomaterials, nanocomposites, ion exchange, membrane separation, solvent extraction [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. All methods have advantages and disadvantages, however, ion exchange and adsorption are well studied since they are efficient for heavy metal recovery and water deep purification.…”

Section: Contamination By Metalsmentioning

confidence: 99%

Amino-Formaldehyde Resins. Properties and Application to Remove Contaminant Metal Ions. An Overview

Rivas

Martinez

2020

J. Chil. Chem. Soc.

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The global production of formaldehyde urea resins (UF) for 2019 was 6 million ton/year, being the largest use in the forestry industry in the production of MDP and MDF boards. It is in the resin industry's interest to develop other applications of these polymers. The possible metal ion separation properties of commercial resins of the type urea-formaldehyde resins (UF), melamine-urea-formaldehyde resins (MUF), and formaldehyde melamine (MF) are achieved by modifying with functional groups. The metal retention properties are determined by batch method in aqueous phase where the purified and sieved solid resin is put into contact with the metal ions at different pH, controlling temperature and ion force. The most studied metal ions are metal ions like Cu(II), Co(II), Cd(II), Zn(II), Cr(III), Hg(II) and Cr(VI). The aim to contribute with this overview, is demonstrate the use of these modified resins to remove metal ions and also the potential application to use them as support to include new functional groups to increase the efficiency and affinity, Moreover, it is motivated by the production in our country of these resins and investigate possible applications in this research field.

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Section: Contamination By Metalsmentioning

confidence: 99%

Amino-Formaldehyde Resins. Properties and Application to Remove Contaminant Metal Ions. An Overview

Rivas

Martinez

2020

J. Chil. Chem. Soc.

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“…Several methods and materials have been developed for environmental clean‐up and remediation of chromium from wastewater and synthetic wastewater, such as adsorption, 11‐14 biomaterials, 15,16 nanocomposites, 17 ion exchange, 18 membrane separation 19‐21 . All methods have advantages and disadvantages; however, ion exchange and adsorption are well studied since they are efficient for heavy metal recovery and water deep purification.…”

Section: Introductionmentioning

confidence: 99%

Chromate ion removal by water‐soluble functionalized chitosan

Palacio

Vásquez

Rivas

2020

Polymers for Advanced Techs

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Hexavalent chromium (Cr(VI)) is a highly toxic metal that has been accused to be carcinogen with prolonged inhalation by humans and is toxic to aquatic life even at low concentrations. The objective of this work was to use water‐soluble functionalized chitosan in the removal of chromate ions in aqueous solution. Functionalized chitosan was obtained by grafting molecules with quaternary ammonium groups in a heterogeneous process under alkaline conditions. Chitosan modified was characterized by FTIR, 1H‐NMR spectroscopy, and TGA. The retention tests were carried out using the liquid‐phase polymer‐based retention technique (LPR) by means of the washing method, studying the effects of the variation of pH, interfering ions, and variations of hydrodynamic flow. The results showed 94.0% retention with regard to the modification of chitosan. For the removal studies, a trend in the retention percentages was presented as the pH increased, obtaining a maximum retention of 92.0% at pH 9.0. In studies of interfering ions, a decrease was found as the concentrations of interferent increased, obtaining the highest retention >70.0%. In conclusion, the functionalization of chitosan with quaternary ammonium groups in conjunction with the LPR technique is a great alternative in the removal of chromate ions and is friendly to the environment.

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“…The toxicity of the Cr (III) ion is negligible compared to that of the Cr (VI) ion. Nevertheless, there are some nutricional supplements based on chromium picolinate that contains the Cr (III) ion, which can be sufficiently toxic to human cells (Preuss et al, 2008) (Santander et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Removal of chromium VI and others metals from wastewater treatment by modification of macrophytes and magnetite: A review

Nogueira¹,

Santos²,

Pal³

et al. 2020

Rev. Bras. Gest. Amb. Sustent.

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One of the problems that affect the environment is the chemical pollution of the nature of the water, mainly by the presence of toxic metals, among them the chromium, copper, nickel, zinc, among others. Numerous studies report the application of biosorption with the use of Eichhornia crassipes for the treatment of effluents from diverse origins, with very satisfactory results. However, several factors influence biosorption, such as pH, temperature, and contact time, and, therefore, cannot be neglected. Submerged macrophytes have important prospective to bioconcentrate heavy metals due to their larger surface area compared to non-submerged plants. On the other hand, the magnetite nanoparticles also present good results for the treatment of aqueous solutions contaminated by chromium and by other metal ions. The adsorption capacity of the Fe3O4 nanoparticles is high for various metal cations. Besides, these nanoparticles, which constitute polymer nanocomposites, are of particular interest because they combine excellent magnetic properties, greater stability of magnetic nanoparticles, and have higher biocompatibility, allowing more excellent suitability with biological materials involved in the removal of metallic cations. Therefore, the treatments described in this study are of great relevance as excellent alternatives in the treatment of several types of effluents.

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Removal of Cr(VI) from aqueous solution by a highly efficient chelating resin

Cited by 11 publications

References 44 publications

Amino-Formaldehyde Resins. Properties and Application to Remove Contaminant Metal Ions. An Overview

Amino-Formaldehyde Resins. Properties and Application to Remove Contaminant Metal Ions. An Overview

Chromate ion removal by water‐soluble functionalized chitosan

Removal of chromium VI and others metals from wastewater treatment by modification of macrophytes and magnetite: A review

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