ADSORPTIONS OF SOME HEAVY-METAL IONS IN AQUEOUS-SOLUTIONS BY ACRYLAMIDE MALEIC-ACID HYDROGELS

SARAYDIN D., KARADAG E., GUVEN O.

SEPARATION SCIENCE AND TECHNOLOGY, cilt.30, sa.17, ss.3287-3298, 1995 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 17
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1080/01496399508013145
  • Dergi Adı: SEPARATION SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3287-3298
  • Anahtar Kelimeler: HYDROGEL, POLY(ACRYLAMIDE MALEIC ACID), ADSORPTION, URANYL ION, HEAVY METAL IONS, AMIDOXIME GROUPS, POLYMER
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

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 AAm/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.