• 제목/요약/키워드: college environment

검색결과 10,035건 처리시간 0.065초

Production of Compost Using Organic wastes

  • Lee, Jang-Hoon;Jung, Joon-Oh;Kwon, Hyuk-Ku;Nam, Youn-Ku;Yun, Jung-Won
    • 한국환경보건학회:학술대회논문집
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    • 한국환경보건학회 2005년도 국제학술대회
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    • pp.406-409
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    • 2005

  • Since 2003, Korean government has restricted landfill application of organic waste, which shares approximately 56% of total waste sludge from municipal and industrial wastewater treatment plants. In addition, enforcement of the ocean disposal prohibition law is effective from 2005. Organic sludge was composted for the purpose of converting to organic fertilizer. After moisture content was regulated with bulking agents aerobic treatment performed. When composting was conducted, commercial and activated microbe materials, identified from soil were seeded in sewage sludge. Carbon dioxide production was increased sharply after 24 hours. Temperature and pH of compost reached to $66.2^{\circ}C$ and 8. Heavy metals were lower than their regulatory limits, which enable it to utilize as organic fertilizer.

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Study on Selective Media for Isolation of Entomopathogenic Fungi

  • Shin, Tae-Young;Choi, Jae-Bang;Bae, Sung-Min;Koo, Hyun-Na;Woo, Soo-Dong
    • International Journal of Industrial Entomology and Biomaterials
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    • 제20권1호
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    • pp.7-12
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    • 2010

  • To determine the optimal isolation conditions of the entomopathogenic fungi from soil, we compared their growth characteristics with non-entomopathogenic fungi on agar media containing various concentrations of cooper (II) chloride ($CuCl_2$) or dodine. The result showed that dodine medium is more selective, and the optimal concentration of dodine is determined with $50{\mu}g$/ml. We could isolate several putative entomopathogenic fungi from soil using this, and identify them using ITS analysis. As a result, 64% fungi were identified as typical entomopathogenic fungi. This selective medium may be useful to the rapid and simple isolation of entomopathogenic fungi from soil.

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