Extraction of copper ions using silica gel with chemically modified surface

Rykowska, I.; Wasiak, W.; Byra, Joanna

doi:10.2478/s11696-008-0020-4

Cited by 23 publications

(15 citation statements)

References 13 publications

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“…Therefore, heavy metal removal from wastewater is beginning to become a significant problem. Advancing technology developments has enabled heavy metal removal to be proposed through several efficient methods, namely, reverse osmosis, membrane filtration, ion exchange, electrochemical treatment, irradiation, extraction [3][4][5][6][7][8], etc. However, these methods have some disadvantages relating to high reagent requests, erratic heavy metal ion removal, toxic sludge creation, etc.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal removal applications using adsorptive membranes

et al. 2020

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Water is a significant natural resource for humans. As such, wastewater containing heavy metals is seen as a grave problem for the environment. Currently, adsorption is one of the common methods used for both water purification and wastewater treatment. Adsorption relies on the physical and chemical interactions between heavy metal ions and adsorbents. Adsorptive membranes (AMs) have demonstrated high effectiveness in heavy metal removal from wastewater owing to their exclusive structural properties. This article examines the applications of adsorptive membranes such as polymeric membranes (PMs), polymer-ceramic membranes (PCMs), electrospinning nanofiber membranes (ENMs), and nano-enhanced membranes (NEMs), which demonstrate high selectivity and adsorption capacity for heavy metal ions, as well as both advantages and disadvantages of each one all, are summarized and compared shortly. Moreover, the general theories for both adsorption isotherms and adsorption kinetics are described briefly to comprehend the adsorption process. This work will be valuable to readers in understanding the current applications of various AMs and their mechanisms in heavy metal ion adsorption, as well as the recycling methods in heavy ions desorption process are summarized and described clearly. Besides, the influences of morphological and chemical structures of AMs are presented and described in detail as well.

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Section: Introductionmentioning

confidence: 99%

Heavy metal removal applications using adsorptive membranes

et al. 2020

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“…[76,77] We also used the fact that ketoimine groupsb onded to the silica surface are capable of complexation with transient metals. [77] In Refs. [78][79][80][81][82][83],r esults of studies on the use of silica modified with ketoimino groups (the same as those applied by the authorsf or gas chromatography) as as orbent for the separation and preconcentration of organicc ompounds and transition metals from aquatics amplesb y means of the SPE techniquea re presented.…”

Section: Sorbents For Gas Microextraction Methodsmentioning

confidence: 99%

“…Originally, the SPE application area was usually restricted to the preconcentration of the analytes showing high hydrophobic properties – the recovery rates for polar compounds were not of sufficient quality . In our previous research, silica modified with ketoimine groups was successfully applied to the determination of trace amounts of bisphenol‐A (BPA) in mineral water and powder milk samples ,. We also used the fact that ketoimine groups bonded to the silica surface are capable of complexation with transient metals …”

Section: Chiral Stationary Phases For Gas Chromatographymentioning

confidence: 99%

“…In our previous research, silica modified with ketoimine groups was successfully applied to the determination of trace amounts of bisphenol‐A (BPA) in mineral water and powder milk samples ,. We also used the fact that ketoimine groups bonded to the silica surface are capable of complexation with transient metals …”

Section: Chiral Stationary Phases For Gas Chromatographymentioning

confidence: 99%

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Stationary Phases for Complexation Gas Chromatography and Microextraction Methods

Rykowska

Wasiak

2016

Israel Journal of Chemistry

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The main goal of this review is to provide an overview of the trends in the technological development of complexation gas chromatography. This kind of chromatography, despite the passage of years, continues to offer new opportunities. The authors would like to show how complexation gas chromatography evolved over the years, due to the variety of stationary phases with complexation properties, their ability to separate, very specifically, the structures of the molecules and chemical compounds, improving the quality of the obtained results, and continuously lowering the detection limits of the analysed compounds in very complex matrices, including environmental and medical samples. The work is dedicated to the memory of Professor E. Gil‐Av, whose scientific achievements were the inspiration for the improvement and widening of the research on the use of complexing metal ions and coordination metal compounds for selective separation in gas chromatography.

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“…Preconcentration procedures for heavy metal ions determination in the high salt content samples can be strongly affected by the matrix constituents of the sample. [23][24][25][26][27][28][29][30] To perform this study, 15 mL of solution containing analyte ions, and interferent's ion in different analyte mass ratio in the presence of 0.13% (w/v) Triton X-114, were subjected to the complete procedure. Table 1 shows the tolerance limits of the interferents ions (error < 5%).…”

Section: Effect Of Foreign Ionsmentioning

confidence: 99%

Application of Cloud Point Extraction for Copper, Nickel, Zinc and Iron Ions in Environmental Samples

Ghaedi

Niknam

et al. 2009

J Chinese Chemical Soc

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A cloud point extraction procedure was presented for the preconcentration of copper, nickel, zinc and iron ions in various samples. After complexation by 2-(6-(1H-benzo[d]imidazol-2-yl)pyridin-2-yl)-1Hbenzo[d]Imidazole (BIYPYBI), analyte ions are quantitatively extracted in Triton X-114 following centrifugation. 1.0 mol L -1 HNO 3 nitric acid in methanol was added to the surfactant-rich phase prior to its analysis by flame atomic absorption spectrometry (FAAS). The adopted concentrations for BIYPYBI, Triton X-114 and HNO 3 and bath temperature, centrifuge rate and time were optimized. Detection limits for Cu 2+ , Fe 3+ , Zn 2+ and Ni 2+ ions was 1.4, 2.2, 1.0 and 1.9 ng mL -1 , respectively. The preconcentration factors for all ions was 30, while the enrichment factor of Cu 2+ , Fe 3+ , Zn 2+ and Ni 2+ ions was 35, 25, 39 and 30, respectively. The proposed procedure was applied to the analysis of real samples.

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Extraction of copper ions using silica gel with chemically modified surface

Cited by 23 publications

References 13 publications

Heavy metal removal applications using adsorptive membranes

Heavy metal removal applications using adsorptive membranes

Stationary Phases for Complexation Gas Chromatography and Microextraction Methods

Application of Cloud Point Extraction for Copper, Nickel, Zinc and Iron Ions in Environmental Samples

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