Selenium adsorption on activated carbon by using radiotracer technique

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

4 Citations (Scopus)

Abstract

Selenium (Se) is an essential trace element for human beings and plays important roles in human health but it is also toxic at concentrations above 1 mg of selenium per kg of body weight. Therefore, elimination of selenium ions from aqueous solutions is important. Se can be eliminated by using activated carbon as an adsorbent. Radiotracer concept is applicable for observation of elimination mechanism. For this reason, selenium radioisotope can be used as tracer. Selenium dioxide is irradiated in the central thimble of ITU TRIGA Mark II Training and Research Reactor for radiotracer production. Radioactivity measurements are carried out by the gamma-ray spectroscopy system to determine the effect of different experimental parameters. The relative importance of test parameters like concentration of adsorbate, pH of the solution, and contact time on adsorption performance of activated carbon for selenium ion is examined. Typical adsorption isotherms (Langmuir, Freundlich, Dubinin–Radushkevich, and Temkin) are determined for the mechanism of sorption process. Evaluation of experiments for different parameters shows possibility of elimination of selenium from aqueous media by using activated carbon.

Original languageEnglish
Title of host publicationCauses, Impacts and Solutions to Global Warming
PublisherSpringer New York
Pages305-322
Number of pages18
ISBN (Electronic)9781461475880
ISBN (Print)9781461475873
DOIs
Publication statusPublished - 1 Jan 2013

Bibliographical note

Publisher Copyright:
© Springer Science+Business Media New York 2013. All rights reserved.

Keywords

  • Activated carbon
  • Adsorbate
  • Adsorption
  • Adsorption isotherms
  • Aqueous media
  • Aqueous solutions
  • Dubinin–Radushkevich
  • Freundlich
  • Gamma-ray spectroscopy
  • Human health
  • Langmuir
  • Radioactivity measurement
  • Radiotracer
  • Radiotracer technique
  • Selenium adsorption
  • Selenium elimination
  • Temkin
  • TRIGA

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