KSBB Journal

  • 제22권1호
  • /
  • Pages.43-47
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  • 2007
  • /
  • 1225-7117(pISSN)
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  • 2288-8268(eISSN)
한국생물공학회 (The Korean Society for Biotechnology and Bioengineering)
권호 표지

폐 신문지의 가수분해에 미치는 계면활성제의 영향

Influence of Surfactant on the Hydrolysis of Used Newspaper

  • 김성배 (경상대학교 공과대학 생명화학공학과 및 공학원) ;
  • 신해중 (경상대학교 공과대학 생명화학공학과 및 공학원) ;
  • 김창준 (경상대학교 공과대학 생명화학공학과 및 공학원) ;
  • 박영철 (경상대학교 공과대학 생명화학공학과 및 공학원)
  • Kim, Sung-Bae (Department of Chemical & Biological Engineering and ERI, Gyeongsang National University) ;
  • Shin, Hae-Joong (Department of Chemical & Biological Engineering and ERI, Gyeongsang National University) ;
  • Kim, Chang-Joon (Department of Chemical & Biological Engineering and ERI, Gyeongsang National University) ;
  • Bak, Young-Cheol (Department of Chemical & Biological Engineering and ERI, Gyeongsang National University)
  • 발행 : 2007.02.28
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초록

신문지와 같은 폐지의 가수분해에 미치는 계면활성제의 영향을 조사하였다. 전처리 공정에 적합한 계면활성제는 사용한 9종의 비이온 계면활성제 중 NP 계열 계면활성제가 가장 좋은 전처리 효과를 나타내었다. NP-20을 사용하여 전처리 공정을 최적화한 결과 계면활성제 농도, 교반속도, 전처리 온도와 시간이 0.5%, 100 rpm, 30$^{\circ}C$와 1시간일 때 최적조건이었다. 당화율을 최대화하기 위하여 기질을 NP-20으로 전처리하고 전처리된 기질을 TW-80을 첨가하여 가수분해하였다. 계면활성제를 사용하여 전처리된 기질을 계면활성제를 첨가하여 가수분해하면 가수분해에서 계면활성제의 효과가 거의 없었다. 그래서 가수분해 공정에서만 계면활성제를 사용하여 효소와 계면활성제의 첨가 순서에 따른 당화율을 조사하였다. 조사결과 기질에 효소를 넣고 난 후 계면활성제의 첨가시기가 늦을수록 당화율이 낮아지는 경향을 나타내었다.

The effect of surfactant on the hydrolysis of used newspaper was investigated. The most suitable surfactant for the pretreatment stage was found to be NP-series surfactants among 9 kinds of non ionic surfactants. Process parameters such as surfactant concentration, mixing speed, pretreatment temperature and time were tested to optimize for maximum digestibility and 0.5%, 100rpm, 30$^{\circ}C$, and 1 h were found to be optimum, respectively. In order to maximize digestibility, substrate was pretreated with NP-20 and then the pretreated substrate was hydrolyzed by adding TW-80. The effect of surfactant on the hydrolysis of previously surfactant-pretreated newspaper was marginal. Therefore, the digestibility with the addition order of enzyme and surfactant was investigated by using surfactant only in hydrolysis stage. The results show that digestibility was more lowered as the surfactant addition after adding enzyme to substrate was more delayed.

키워드

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