Uptake of heavy metal ions from aqueous solutions by sorbents obtained from the spent ion exchange resins

In wastewater treatment, the removal of heavy metals is difficult due to the limited affinity of heavy metal ions to ion exchange resins. Here imprinting polymerization is used to develop resins with high capacity and selectivity for heavy metal ions for water treatment. A random copolymer of methacrylate and methacrylamide was found to be most effective for the removal of hydrophilic metal complexes, like CdCl2, ZnCl2, and the metalloid NaH2AsO4, particularly when the porosity of these resins is increased. For hydrophobic complexes imprinting emulsion polymerization was developed and data for the effective removal of mercury dithizonate will be described. Complete removal for up to 80 ppm of cadmium and mercury with only 200 mg of imprinted resin was obtained; competition and co-imprinting experiments are described as well.

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HEAVY METAL REMOVAL BY CELLULOSE-BASED TEXTILE WASTE PRODUCT

IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA ◽

10.6060/ivkkt.20206302.6098 ◽

2020 ◽

Vol 63 (2) ◽

pp. 105-110

Author(s):

Inna N. Pugacheva ◽

Andrei V. Karmanov ◽

Svetlana B. Zueva ◽

Ida De Michelis ◽

Francesco Ferella ◽

...

Keyword(s):

Aqueous Solution ◽

Heavy Metal ◽

Ion Exchange ◽

Metal Ions ◽

Waste Product ◽

Average Particle ◽

Ion Exchange Resins ◽

Textile Waste ◽

Wide Range ◽

Exchange Resins

The textile industry is a source of significant amounts of cellulosic waste that can be processed into promising sorbents. The aim of study was understanding the adsorption behavior of metal ions on cellulose surfaces obtained from cellulose textile waste of light industry. Previous studies have shown that unmodified cellulose-based ion exchange resins obtained at different pH values were able to remove metal ions from aqueous solution. In present work the cellulose-based ion exchange resins were prepared by H2SO4 hydrolysis of initial waste product with following neutralization up to different pH and drying at 80 °C. Based on the fractional composition of powdered sorbents, the weighted average particle size of the sorbents used is determined: sorbents with pH = 1.5 - 3 ≈ 0.57 mm; sorbents with pH = 5 - 7 ≈ 0.14 mm. The IR analysis of the elemental composition of the particles showed the presence of bound sulfate groups in the powder sorbent with pH = 1.5-3. The results of experiments showed that the modification of the surface of the cellulose waste with sulfuric acid increased the effect of adsorption of Ni, Fe and Pb ions from an aqueous solution. It has been established that the electrostatic interaction between surface functional groups plays a significant role in the adsorption properties of the sorbents obtained. The affinity of sulphonic acid resins for cations generally varies with the ionic size and charge of the cation. This study showed that adsorption capacities of studied metals were in the order of Fe3+<Pb2+<Ni2+. Resulting cellulose particles have sulfate groups on their surface, which have wide range of applications for the removal of heavy metal ions from wastewater.

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Removal of Heavy Metal Ions from Aqueous Solutions Using Modified Poly(styrene-alt-maleic anhydride) Copolymer as a Chelating Resin

Russian Journal of Applied Chemistry ◽

10.1134/s1070427218120108 ◽

2018 ◽

Vol 91 (12) ◽

pp. 1984-1993 ◽

Cited By ~ 2

Author(s):

M. Hosseinzadeh

Keyword(s):

Heavy Metal ◽

Maleic Anhydride ◽

Aqueous Solutions ◽

Metal Ions ◽

Heavy Metal Ions ◽

Chelating Resin ◽

Maleic Anhydride Copolymer

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Preparation of organic acid anion-modified magnesium hydroxides by coprecipitation: A novel material for the uptake of heavy metal ions from aqueous solutions

Journal of Physics and Chemistry of Solids ◽

10.1016/j.jpcs.2009.06.006 ◽

2009 ◽

Vol 70 (7) ◽

pp. 1104-1108 ◽

Cited By ~ 12

Author(s):

Tomohito Kameda ◽

Hidenori Takeuchi ◽

Toshiaki Yoshioka

Keyword(s):

Heavy Metal ◽

Aqueous Solutions ◽

Metal Ions ◽

Organic Acid ◽

Heavy Metal Ions ◽

Acid Anion ◽

Organic Acid Anion ◽

Novel Material

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Porous BMTTPA–CS–GO nanocomposite for the efficient removal of heavy metal ions from aqueous solutions

RSC Advances ◽

10.1039/d0ra07836k ◽

2021 ◽

Vol 11 (6) ◽

pp. 3725-3731

Author(s):

Juan Huang ◽

Weirong Cui ◽

Ruping Liang ◽

Li Zhang ◽

Jianding Qiu

Keyword(s):

Heavy Metal ◽

Aqueous Solutions ◽

Metal Ions ◽

Heavy Metal Ions ◽

Polluted Water ◽

Efficient Removal

Novel porous BMTTPA–CS–GO nanocomposites are prepared by covalently grafting BMTTPA–CS onto GO surfaces, and used for efficient removal of heavy metal ions from polluted water.

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