Effect of Wastewater Treatment of Partially Deacetylated Chitosan

부분 탈아세틸화된 키토산의 폐수처리 효과

  • Cho, S.K. (Dept. of Industrial Chemistry, Hanyang Univ.) ;
  • Kim, S.J. (Dept. of Industrial Chemistry, Hanyang Univ.) ;
  • Jung, B.O. (Dept. of Industrial Chemistry, Hanyang Univ.) ;
  • Kim, J.J. (Div. of Poly. Sci. and Eng., KIST) ;
  • Choi, K.S. (Dept. of Industrial Chemistry, Hanyang Univ.) ;
  • Lee, Y.M. (Dept. of Industrial Chemistry, Hanyang Univ.)
  • 조성관 (한양대학교 공업화학과) ;
  • 김선정 (한양대학교 공업화학과) ;
  • 정병옥 (한양대학교 공업화학과) ;
  • 김재진 (한국과학기술연구원 고분자연구부) ;
  • 최규석 (한양대학교 공업화학과) ;
  • 이영무 (한양대학교 공업화학과)
  • Received : 1994.06.27
  • Accepted : 1994.08.08
  • Published : 1994.10.01

Abstract

Chitin was extracted from crab shell by Hackman method and chitosan was prepared to chitin, that was deacetylated under various concentration of NaOH solution and reaction time at constant temperature, $100^{\circ}C$. Samples were A=19%, B=52%, C=70% and D=93% deacetylation's chitosan and they were tested. When deacetylation was increased, $\overline{Mw}$ was decreased and removal rate of suspended solid and removal rate of chemical oxygen demand were increased. Suspended solid and removal rate of chemical oxygen demand showed the better at pH 9 and pH 7 than any other pH range.

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