A Study on the Adsorption of Heavy Metals by Chitosan Obtained from Shrimp Shell

새우껍질로부터 얻어진 키토산을 이용한 중금속 흡착에 관한 연구

  • 차월석 (조선대학교 공과대학 화학공학과) ;
  • 김종수 (익산대학 화학공업과) ;
  • 조배식 (광주광역시 보건환경연구원) ;
  • 김종균 (익산대학 식품공업과)
  • Received : 1997.12.08
  • Accepted : 1998.04.10
  • Published : 1998.08.10

Abstract

Experimental investigation on the adsorption of heavy metal confounds as $Fe^{2+}$, $Cu^{2+}$, $Mn^{2+}$, $Zn^{2+}$, $Ni^{2+}$, $Pb^{2+}$, $Cd^{2+}$, $Cr^{6+}$ using chitosan was carried out. The adsorption of each component of heavy metal compounds was measured by Atomic Absorption apparatus. The range of optimum pH for the removal rates of heavy metal compounds was found pH 7.0~9.0. The maximum time for the removal rate of $Fe^{2+}$ was observed about 15 min. The maximum time for the removal raters of $Cu^{2+}$, $Mn^{2+}$, $Zn^{2+}$, $Ni^{2+}$, $Pb^{2+}$, $Cd^{2+}$, and $Cr^{6+}$ was observed about 25 min. The adsorption rates of heavy metal compounds by chitosan have been found in the order of $Fe^{2+}>Cu^{2+}>Mn^{2+}>Zn^{2+}>Ni^{2+}>Pb^{2+}>Cd^{2+}>Cr^{6+}$.

Keywords

Heavy Metal Compounds;Removal Rates;Optimum pH;Maximum Time

Acknowledgement

Supported by : 조선대학교

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