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ESTABLISHMENT OF DETECTION METHODS FOR HARMFUL CHEMICAL SUBSTANCES IN LEACHATE USING AMES ASSAY
( Ayako Tachifuji ),( Yasushi Matsufuji ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
As plasticizers and fire retardants of plastics have also been detected in the underground surrounding the landfills, the risk of leachate contamination has become a public concern. To address this, mutagennicity test was selected as the method to detect harmful chemical substances, especially the carcinogen, and the research on the mutagenicity of leachate from landfill using the Ames assay was carried out. In this study, the test was simplified through the selection of useful test strain and using an appropriate extraction method, a method to remove inhibitors in leachate was established.
침출수에 함유한 발암성 검출분석시 유해 화학물질의 검출방법 확립
( Ayako Tachifuji ),( Yasushi Matsufuji ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
플라스틱의 가소제와 방화제로 인하여 매립지 환경내에 침출수 오염의 위험은 공공에 관계되어 있다. 돌연변이 유발력 시험은 유해화학물질 검출방법에 의해 선택되어지고 특별한 발암성 물질과 발암성 검출분석을 이용한 매립지의 침출수의 돌연변이 유발력 연구가 실행되었다. 이 연구는 간이화한 시험을 통해 유용한 변종실험의 선정과 적당한 추출법을 사용하고, 침출수 억제제 제거법을 확립한다. As plasticizers and fire retardants of plastics have also been detected in the underground surrounding the landfills, the risk of leachate contamination has become a public concern. To address this, mutagennicity test was selected as the method to detect harmful chemical substances, especially the carcinogen, and the research on the mutagenicity of leachate from landfill using the Ames assay was carried out. In this study, the test was simplified through the selection of useful test strain and using an appropriate extraction method, a method to remove inhibitors in leachate was established.
INFLUENCE OF THE DECOMPOSITION OF BIODEGRADABLE PLASTIC ON LEACHATE QUALITY IN LANDFILLS
( Yasushi Matsutuji ),( Ayako Tachifuji ),( Makiko Tanaka ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
Recently, the incineration plant was integrated to satisfy the limit levels of Dioxins in emission and get more expensive. Therefore local government needs an economical and safety treatment system instead of incinerating waste plastics. This study provides the problems and its solutions in case that municipal solid waste including biodegradable plastics (BP) was disposed of in landfill after converting most of plastics to BP. From this result, it was clarified (i) the pollutant load in landfill increase by receiving BP, (ii) this problem is solved by selecting the semiaerobic landfill type and BP with high in gasification rate such as PLA.
( Ai Nakamura ),( Ayako Tachifuji ),( Yasushi Matsufuji ),( Mitsuhiro Nakamura ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-
The recycling activity of wastes has been promoting recently in Japan, however the recycling rate of food wastes is 20.4% in 2012, which is lower than those of other wastes. This was attributed to the shortage of demands of recycling due to the unstable quality and supply of recycled product. To solve these problems, Tanimura et.al1) suggested the new back-up method that the composts made from food waste were used as the cover soil in landfill, to promote the stabilization of incineration ashes by microbial activities1), 2). In this study, the effect of the easily degradable organic matter (EDOM) content in composts for the stabilization of incineration ashes was compared by using test columns simulated landfill within the different composts of the EDOM content. This was due to the incineration ashes contained little nutrient for the growth of microorganisms as well as microorganisms. The results suggested that the compost containing rich EDOM content was more effective on the neutralization and enrichment of microorganisms which were part of the promotion processes for rehabilitation of landfill with incineration ashes mainly.