Journal of Korean Society of Water and Wastewater (상하수도학회지)

  • 제21권1호
  • /
  • Pages.27-36
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  • 2007
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지

Adsorption of Cu(II) from Aqueous Solutions Using Pinus densiflora Wood

Pinus densiflora 목질을 이용한 수용액 중의 Cu(II) 흡착

  • 박세근 (강원대학교 공과대학 환경공학과) ;
  • 김하나 (강원대학교 공과대학 환경공학과) ;
  • 김영관 (강원대학교 공과대학 환경공학과)
  • 투고 : 2006.09.20
  • 심사 : 2007.02.06
  • 발행 : 2007.02.15
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초록

Milled Korean pine (Pinus densiflora) wood was used to evaluate its adsorption capacity of Cu(II) ions from aqueous solution by running a series of batch experiments. Prior to the tests, the milled woods were pretreated with 1N NaOH, 1N $NHO_3$, and distilled water, respectively, to examine the effect of pretreatment. Within the tested pH range in this study between 3 and 6, copper adsorption efficiency of NaOH-treated wood(96~99%) was superior than $NHO_3$-treated wood(19~31%) and distilled water-treated wood(18~35%). Adsorption behavior of copper onto both raw and $NHO_3$-treated woods was mainly attributed to interaction with carboxylic acid group. For NaOH-treated wood, carboxylate ion produced by hydrolysis was a major functional group responsible for Cu sorption. NaOH treatment of wood changed the ester and carboxylic acid groups into carboxylate group, whereas $NHO_3$ treatment did not affect the production of functional groups which could bind copper. A pseudo second-order kinetic model fitted well for the sorption of copper ion onto NaOH-treated wood. A batch isotherm test using NaOH-treated wood showed that equilibrium sorption data were better represented by the Langmuir model than the Freundlich model.

키워드

과제정보

연구 과제 주관 기관 : 강원지역환경기술개발센터

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