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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

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.

Acknowledgement

Supported by : 세명대학교

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