KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Biodegradibility Tests of Biodiesel-derived Pentaerythritol Lubricant Oil Bases

바이오디젤 유래 펜타에리쓰리톨계 윤활유 베이스의 생분해성 테스트

  • 정해영 (호서대학교 식품생물공학전공 및 벤처전문대학원) ;
  • 김의용 (서울시립대학교 화학공학과) ;
  • 채희정 (호서대학교 식품생물공학전공 및 벤처전문대학원)
  • Published : 2004.04.01
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Abstract

Biodegradability test for various synthetic lubricant oil bases derived from biodiesel was carried out. The biodegradability was estimated under aerobic aqueous condition, according to the method by OECD 301 B, which is based on CO$_2$ evolution test. The ultimate biodegradability of pentaerythritol methyl esters were estimated as 61.1∼80.3%, at 28 day with which the test compounds were indicated as ultimately biodegradable. Among the tested samples, biodiesel showed the highest biodegradability (83.5%). The validation with several criteria, regarding relative errors of test results, toxicity control and procedure control, was performed through the biodegradability test. The test procedure was validated for all the tested lubricant oil bases and biodiesel, except for petroleum diesel.

생산된 바이오디젤 (지방산 메틸에스테르)을 기반으로 한 여러가지 합성윤활유 베이스를 분석대상으로 하여 생분해도를 분석평가하였다. 또한 기존 석유디젤과 바이오디젤의 생분해성을 함께 비교 검토하였다. 호기적인 조건하에 생분해성 윤활유의 수상에서는 생분해성을 이산화탄소 발생량을 기준으로 생분해성을 조사하는 OECD 301 B에 근거하여 윤활유를 분석한 결과 펜타에리스리톨계 윤활유 베이스들의 28일째의 최종 생분해도는 61.1∼80.3%로서 모두 생분해도가 있음을 알 수 있었으며, 바이오디젤은 생분해도가 가장 높았다(83.5%). 분석의 상대오차, 독성대조군, 분석절차대조군과 관련된 규정에 의해 석유디젤을 제외하고 모두 타당한 절차에 의해 분석되었음을 입증할 수 있었다.

Keywords

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