DOI QR코드

DOI QR Code

어류폐기물의 탄화처리시 효율적 탄화조건에 관한 연구

Study on Efficient Carbonizing Conditions When Carbonizing Fish Offal

  • Jeong, Byung Gon (Department of Environmental Engineering, Kunsan National University)
  • 투고 : 2014.01.06
  • 심사 : 2014.11.10
  • 발행 : 2014.11.25

초록

어판장에서 발생되는 생선 손질 폐기물의 자원화를 목적으로 탄화실험을 실시하였다. 어류폐기물의 원소조성을 살펴본 결과 탄소함량과 수소함량이 각각 51.1%와 7.6%, 산소함량이 30.5%로 나타났다. 특히 질소와 황의 함량이 각각 9.8%와 1.0%로 높아 악취문제 등이 심각할 수 있다는 것을 알 수 있었다. 어류폐기물의 원소조성을 다른 폐기물과 비교해볼 때 탄소 및 수소의 함량이 상당히 높은 것으로 나타나 생선폐기물의 최종처리는 열적처리가 적합한 것으로 나타났다. 고등어, 갈치, 조기를 대상으로 내장이나 몸통, 개별 생선이나 이들을 혼합한 시료 모두에 대하여 탄화실험을 실시한 결과 탄화되는 패턴은 시료 종류에 관계없이 유사한 경향을 나타내었다. 탄화시간에 따른 수율변화는 탄화시간 5분, 10분일 때 탄화온도 변화에 따른 수율 변화가 크게 나타났고, 탄화시간 15분 이후에는 탄화온도 변화에 따른 수율 변화가 미미한 것으로 나타났다. 또한 탄화시간 30분 이상부터는 각 온도별로 시간변화에 따른 수율 변화가 미미한 것으로 나타나 탄화시간에 따른 수율변화는 30분 이상부터는 큰 영향을 미치지 않는 것으로 나타났다. 탄화온도에 따른 차이는 탄화온도 $400^{\circ}C$에서는 1차 휘발이 미미하여 2차 휘발이 일어난 $500^{\circ}C$와의 수율차가 크게 나타났다. 또한 탄화온도를 $600^{\circ}C$, $700^{\circ}C$로 하여 10분 이상 탄화시킨 결과 수율차는 미미한 것으로 나타났다.

Experiments on carbonization were conducted using fish offal generated from fish market for the purpose of resource recycling. Elemental composition of fish offal and effect of carbonation temperature on the overall yield were investigated. Carbon and hydrogen contents of fish offal were 51.1% and 7.6%, respectively in view of elemental composition. Particularly, nitrogen and sulfur contents were as high as 9.8% and 1.0%, respectively. These values suggests that odor problem of fish offal can be serious. Comparing elemental composition of fish offal with other waste materials, it is thought that carbon and hydrogen contents are considerably high. These implies that thermal disposal will be the best option for final disposal method of fish offal. As a results of carbonization experiments on Mackerel, Hairtail, Croaker and mixed sample of Mackerel, Hairtail and Croaker, carbonization patterns were quite similar irrespective of fish species. Carbonization yield was varied significantly depending on carbonization temperature at the carbonization time of 5 minutes and 10 minutes. When the carbonization time was maintained longer than 30 minutes, yield variation depending on time variation at each temperature was insignificant. Thus, it can be concluded that effect of carbonization time on overall yield was minor when the carbonization time was maintained longer than 30 minutes. Primary vaporization in carbonization conducted at the temperature of $400^{\circ}C$ was minor. Thus, difference of yield between temperature of $500^{\circ}C$ and $400^{\circ}C$ was appeared greatly. It can be concluded that yield difference depending on carbonization temperature can be neglected if the carbonizing temperature exceed $600^{\circ}C$ and carbonizing time exceed 10 minutes at the same time.

키워드

참고문헌

  1. Hwang, S. S., 2003, "Trends in development of organic waste carbonizing technology : Feasibility study and summary of wet carbonizing technology", J. of Kowrec, Vol. 11, No. 3, pp. 9-15.
  2. Jeong, B. G., 2010, "Characteristics of household wastes from fishing village in small island", Journal of The Korean Society for Marine Environment and Energy, Vol. 13, No. 3, pp. 181-186.
  3. Kim, J. H., Ryu, S. K. and Kim, D. K., 2005, "Kinetics on the microwave carbonization of rice chaff", Journal of The Korean Institute of Chemical Engineers, Vol. 43, No. 6, pp. 683-690.
  4. Lee, S. W. and Jo, Y. H., 2008, "A study on characteristics of carbonization residue produced from woody biomass", Journal of Korean Solid Wastes Engineering Society, Vol. 25, No. 6, pp. 533-539.
  5. Lee, K. J., 2009, "The study of physico- chemcal characteristics of municipal solid waste (MSW) in gangwon area", Journal of Korea Organic Resource Recycling Association, Vol. 17, No. 2, pp. 101-111.
  6. Lee, S. W. and Choi, H. H., 2009, "Energy characteristics of carbonization residue produced from food waste", Journal of Korean Solid Wastes Engineering Society, Vol. 26, No. 1, pp. 36-43.
  7. Lee, S. W., 2012, "A study on the reaction kinetics of sewage sludge in carbonization process", Journal of Korean Solid Wastes Engineering Society, Vol. 29, No. 1, pp. 86-92.
  8. Namkoong, W., Kim, J. D., In, B. H., Park, J. S. and Lee, N. S., 1998, "An evaluation on the elemental composition in combustible components of municipal solid waste generated in korea", Journal of Korean Solid Wastes Engineering Society, Vol. 15, No. 6, pp. 678-684.
  9. Park, J. K., Song, S. H., Jeong, S. R., Jung, M. S., Lee, N. H. and Lee, B. C., 2008, "Size distribution and physicochemical characteristics of MSW for design of its mechanical biological treatment process", Journal of Korea Organic Resource Recycling Association, Vol. 16, No. 1, pp. 62-69.
  10. Park, S. W., 2005, "Carbonization technology for recycling wastes as fuel", Journal of Korean Solid Wastes Engineering Society, Vol. 22, No. 3, pp. 226-235.
  11. Park, Y. C. and Lee, S. S., 2003, "Thermal analysis study on kinetics and heats of carbonization reaction for the imported coking coals", Journal of The Korean Institute of Chemical Engineers, Vol. 41, No. 4, pp. 530-536.