REMOVAL OF AMMONIUM FROM AQUEOUS SOLUTIONS BY ADSORPTION PROCESSES USING ENVIRONMENT FRIENDLY NATURAL BIOPOLYMER CHITOSAN


Oktor K., Hilmioğlu N.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.30, no.2A, pp.1970-1976, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 2A
  • Publication Date: 2021
  • Journal Name: FRESENIUS ENVIRONMENTAL BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Environment Index, Geobase, Greenfile, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.1970-1976
  • Keywords: Ammonium, Chitosan, Adsorption, SUNFLOWER OIL, WASTE-WATER, ZEOLITE 13X, OLEIC-ACID, NITROGEN, KINETICS, IONS
  • Kocaeli University Affiliated: Yes

Abstract

Ammonium nitrogen (NH4 + -N), is one of the most common chemicals found in water ecosystems. Removal of ammonium, which is toxic to living things is a requirement and also important in terms of evaluating the regaining as a renewable energy source. In this study, membrane films were prepared from a natural biopolymer chitosan by solution casting method to remove ammonium from water. It was crosslinked by epichlorohydrine for stability and usage of that films as an adsorbent was investigated. The suitability of data obtained to adsorption isotherms and adsorption kinetic models were investigated. The maximum adsorption capacity was reached as 15.6 mg NH4+N/g adsorbent for 100 mg solution concentration at 25 degrees C by using 0.25 g adsorbent dosage. The experimental equilibrium data were matched with the Langmuir and Freundlich isotherm models. Adsorption process succeeded the pseudo-second- order kinetic model.