Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Removal of Methylene Blue in Water Phase by Using Juniperus chinensis

향나무를 활용한 수중에서 메틸렌 블루의 제거

  • Choi, Suk Soon (Department of Biological and Environmental Engineering, Semyung University) ;
  • Ha, Jeong Hyub (Department of Intergrated Environmental Systems, Pyeongtaek University)
  • 최석순 (세명대학교 바이오환경공학과) ;
  • 하정협 (평택대학교 환경융합시스템학과)
  • Received : 2018.01.31
  • Accepted : 2018.02.11
  • Published : 2018.06.10
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Abstract

The development of treatment technologies for recycling waste woods generated from tree pruning is required in Gangwon province forest. In this study, according to adsorption experiments using three types (Larix kaemoferi, Juniperus chinensis, Pinus densiflora) of waste woods, Juniperus chinensis as a biosorbent showing an excellent removal ability was selected for the removal of methylene blue in an aqueous phase. When 0.4 g/100 mL of Juniperus chinensis was used to improve the removal efficiency of methylene blue for 4 h, each 100, 200 and 300 mg/L of methylene blue dissolved in the aqueous phase were removed to 98, 93, and 81%, respectively. The adsorption equilibrium data obtained by changing adsorbent concentrations was found to be more consistent with the Langmuir than the Freundlich equation. In addition, based on dynamic experiments by changing the methylene blue concentration, the biosorption kinetics equation was more suitable for a pseudo-second order model. In order to enhance the removal capability of highly concentrated methylene blue, 300 and 400 mg/L of methylene blue were operated for 4 h under 210 rpm of agitation velocity and removal efficiencies were 92 and 76%, respectively. Consequently, these experimental results can be effectively utilized as a new biosorption technology for economically treating methylene blue dissolved in an aqueous phase.

강원지역 산림에서 수목들의 가지치기로 인하여 발생되는 목재 폐기물의 재활용 처리 기술 개발이 요구되고 있다. 본 연구에서는 3종류(낙엽송, 향나무, 소나무) 폐목재를 활용한 흡착 실험에 의하여 수중에 함유된 메틸렌 블루의 제거능력이 우수한 생물흡착제로 향나무를 선별하였다. 그리고, 메틸렌 블루 제거효율을 향상하고자 0.4 g/100 mL의 향나무를 주입하여 반응 4 h 흡착하였을 때, 수중에 용해된 100, 200, 300 mg/L의 메틸렌 블루는 각각 98, 93, 81%의 제거효율을 나타내었다. 흡착제 농도 변화에 의한 흡착평형 자료들은 Freundlich식보다 Langmuir식에 잘 부합됨을 알 수 있었다. 또한, 메틸렌 블루 농도 변화에 의한 동력학적 실험으로부터, 생물흡착 속도식은 유사 2차 반응식에 보다 적합함을 알 수 있었다. 고농도 메틸렌의 블루 제거능력을 증가시키기 위하여, 300과 400 mg/L 메틸렌 블루를 210 rpm 교반속도로 4 h 운전하였을 때, 각각 92, 76% 제거효율을 나타내었다. 따라서 이러한 실험 결과들은 수중에 용해된 메틸렌 블루를 경제적으로 처리하는 새로운 생물흡착 기술에 유용하게 사용될 수 있을 것이다.

Keywords

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