Investigation of adsorption properties of Periostracum serpentis as keratin-containing natural biowaste composite material for uranium

ŞİMŞEK S., Koçak N., KOÇKAYA M.

International Journal of Biological Macromolecules, cilt.301, 2025 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 301
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.ijbiomac.2025.140388
  • Dergi Adı: International Journal of Biological Macromolecules
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, EMBASE, Food Science & Technology Abstracts, INSPEC, Veterinary Science Database
  • Anahtar Kelimeler: Adsorption, Keratin, Periostracum serpentis, Uranyl
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

In this study, the interaction of waste snake skin (Periostracum serpentis), a keratin-based biowaste composite material, with uranyl ions, the predominant form of uranium in aqueous solutions, was investigated to determine whether it could be used as an adsorbent. SEM, FTIR, BET and EDX analyses were performed to elucidate the material's surface and structural properties. The effects of the amount of adsorbent, uranyl ion concentration, pH, temperature, and adsorption time were investigated to optimize uranium removal with this material. The results showed an adsorption capacity of 0.377 molkg−1. It was observed that the Elovich model determined the adsorption kinetics and the adsorption pH was maximum at approximately 4–5. It was found that adsorption was heat consuming, with increased orderliness and a spontaneous process. These results revealed that Periostracum serpentis, a waste material, is a potential adsorbent for removing and enriching uranium.