Waste deposit & refund system was performed in order to recycle the waste since 1992, and this system developedinto the EPR (Extended Producer Responsibility) system since 2003 in Korea. Many products and packaging materialsare recycled by this system, and government published the ‘EPR Practical Manual (2007)’ to estimate the actual recyclingrate. According to styrofoam-buoy (SB) included EPR item in 2010, SB does not practical to estimate the recycling rate,EPS (Expanded Poly-Styrene) was recycled only. So in this study, SB recycling rate also includes ‘EPS+parts’ was toestimate through the field investigation. As a results, parts portion of SB are 3.49% when manufactured, and 2.03% whenrecycled. And process loss, contaminant content, parts portion and yield of EPS ingot are 0.00%, 64.28%, 0.71% and35.01% in SB recycling, respectively. In the future SB recycling rate is calculated by adding the EPS ingot productionand parts recovered.

Abstract
 I. 서 론
 II. 연구방법
 III. 연구결과
  1. 부자의 부분품 산정
  2. 부자 재활용 현장 분석
  3. 양식용 부자의 자원순환 평가
 IV. 결 론
 References

• 민달기(가천대학교 환경에너지학과) | Dal-Ki Min Corresponding author