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Title: Adsorptions of some heavy metal ions in aqueous solutions by acrylamide/maleic acid hydrogels

Abstract

In this study, acrylamide-maleic acid (AAm/MA) hydrogels in the form of rod have been prepared by {gamma}-radiation. They have been used for adsorption of some heavy metal ions such as uranium, iron, and copper. For the hydrogel containing 40 mg of maleic acid and irradiated at 3.73 kGy, maximum and minimum swellings in the aqueous solutions of the heavy metal ions have been observed with water (1480%) and the aqueous solution of iron(III) nitrate (410%), respectively. Diffusions of water and heavy metal ions onto hydrogels have been found to be of the non-Fickian type of diffusion. In experiments of uranyl ions adsorption, Type II adsorption has been found. One gram of AAa/MA hydrogels sorbed 14-86 mg uranyl ions from solutions of uranyl acetate, 14-90 mg uranyl ions from solutions of uranyl nitrate, 16-39 mg iron ions from solutions of iron(IV) nitrate, and 28-81 mg copper ions from solutions of copper acetate, while acrylamide hydrogel did not sorb any heavy metals ions.

Authors:
;  [1];  [2]
  1. Cumhuriyet Univ., Sivas (Turkey)
  2. Hacettepe Univ., Ankara (Turkey)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
273513
Resource Type:
Journal Article
Resource Relation:
Journal Name: Separation Science and Technology; Journal Volume: 30; Journal Issue: 17; Other Information: PBD: Oct 1995
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; COPPER; ADSORPTION; IRON; URANIUM; POLYMERS; SWELLING; ACRYLAMIDE; AQUEOUS SOLUTIONS; DIFFUSION; MALEIC ACID; RADIOACTIVE WASTE PROCESSING; URANYL COMPOUNDS

Citation Formats

Saraydin, D., Karadag, E., and Gueven, O. Adsorptions of some heavy metal ions in aqueous solutions by acrylamide/maleic acid hydrogels. United States: N. p., 1995. Web. doi:10.1080/01496399508013145.
Saraydin, D., Karadag, E., & Gueven, O. Adsorptions of some heavy metal ions in aqueous solutions by acrylamide/maleic acid hydrogels. United States. doi:10.1080/01496399508013145.
Saraydin, D., Karadag, E., and Gueven, O. Sun . "Adsorptions of some heavy metal ions in aqueous solutions by acrylamide/maleic acid hydrogels". United States. doi:10.1080/01496399508013145.
@article{osti_273513,
title = {Adsorptions of some heavy metal ions in aqueous solutions by acrylamide/maleic acid hydrogels},
author = {Saraydin, D. and Karadag, E. and Gueven, O.},
abstractNote = {In this study, acrylamide-maleic acid (AAm/MA) hydrogels in the form of rod have been prepared by {gamma}-radiation. They have been used for adsorption of some heavy metal ions such as uranium, iron, and copper. For the hydrogel containing 40 mg of maleic acid and irradiated at 3.73 kGy, maximum and minimum swellings in the aqueous solutions of the heavy metal ions have been observed with water (1480%) and the aqueous solution of iron(III) nitrate (410%), respectively. Diffusions of water and heavy metal ions onto hydrogels have been found to be of the non-Fickian type of diffusion. In experiments of uranyl ions adsorption, Type II adsorption has been found. One gram of AAa/MA hydrogels sorbed 14-86 mg uranyl ions from solutions of uranyl acetate, 14-90 mg uranyl ions from solutions of uranyl nitrate, 16-39 mg iron ions from solutions of iron(IV) nitrate, and 28-81 mg copper ions from solutions of copper acetate, while acrylamide hydrogel did not sorb any heavy metals ions.},
doi = {10.1080/01496399508013145},
journal = {Separation Science and Technology},
number = 17,
volume = 30,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 1995},
month = {Sun Oct 01 00:00:00 EDT 1995}
}
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  • No abstract prepared.
  • This paper examines the reactions of F/sub 2/ and HOF with aqueous perchloric acid solutions containing various complexes of trivalent chromium. In no case is the chromium itself oxidized. The complex CrF/sup 2 +/ is unreactive toward either oxidant. CrClO/sub 3//sup 2 +/, CrNO/sup 2 +/, CrCl/sup 2 +/, and CrBr/sup 2 +/ show increasing reactivity, with the formation of Cr/sup 3 +/ as the principal product. In the case of CrBr/sup 2 +/ and CrCL/sup 2 +/ there is evidence that F/sub 2/ can react with the substrate directly, as well as via the intermediate formation of HOF. Thismore » direct reaction produces some CrF/sup 2 +/ in addition to Cr/sup 3 +/. Azidochromium(III), CrN/sub 3//sup 2 +/, is the most reactive of the complexes studied. It reacts directly with F/sub 2/ to form a mixture of Cr/sup 3 +/ and CrF/sup 2 +/; it reacts with HOF to form CrNO/sup 2 +/. Reaction mechanisms that can account for these observations are discussed.« less