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Study on the Adsorption of Heavy Metal Ions by Biomaterials

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

This study was conducted for the efficient utilization of biomaterials such as starch residue, tangerine skin, and green tea residue, which are agricultral by-products discarded in Cheju Province annually, as adsorbents and biomaterials were examined for their removal ability of heavy metal ions in waste water by batch adsorption experiments. The removal efficiency of biomaterials for heavy metal ions was above 80-90% and almost similar to activated carbon and the adsorption ability of those treated with 포르말린 was improved in the green tea residue only for Pb^2+, Cu^2+, and Zn^2+. In the conditions of pH, the removal efficiency of heavy metal ions was high in the range of 5-7. In the solutions which heavy metal ions were mixed, the removal efficiency was similar at Ag^+, Pb^2+ and reduced to about 10% at the other ions, as compared with the solutions they were not mixed. Adsorption isotherms of biomaterials was generally obeyed to Freundlich formular than Langmuir formular and Freundlich constant, 1/n were obtained in the range of 0.1-0.5.

저자
  • 정석희 | Seok Hee Jeong
  • 감상규 | Sang Kyu Kam
  • 이민규 | Min Gyu Lee