Suspended wood waste was being inflow into the dam and the problem of waste disposal has been occurred. In this study, ethanol production using woody floater wastes was performed to estimate value in use for raw material of renewable energy. To achieve the goal, experiments of acid hydrolysis and ethanol fermentation using dam woody floater as raw materials for bioethanol was carried out.
In the results of field survey in the chungju dam, kind of woody floater was mainly Japanese larch (Larix leptolepis) and hybrid poplar (Populus tomentiglandulosa). The results of sugar extraction showed that sugar content was higher in Larix leptolepis than Populus tomentiglandulosa. Extracted sugar from wood waste was effective consumed by yeast(P. Stipitis and S cerevisiae). In the experiment consumption of sugar including glucose, galactose and xylose, the consumption rate of S. cerevisiae is faster than that of P. stipitis. and efficiency for ethanol production is higer in S. cerevisiae than P. stipitis. Also it can be confirmed that resource as ethanol production using wood waste was available.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 재료
  2.2. 방법
 3. 결과 및 고찰
  3.1. 산 가수분해에 의해 생산된 당화액 분석
  3.2. 효모균주을 이용한 에탄올 발효
 4. 결 론
 참 고 문 헌

• 박상찬(충주대학교 환경공학과) | Sang-Chan Park (Department of Environmental Engineering, Chungju National University)
• 장인수(충주대학교 환경공학과) | In-Soo Chang (Department of Environmental Engineering, Chungju National University)
• 조중식(충북대학교 환경공학과) | Jung-Sik Cho (Department of Environmental Engineering, Chungbuk National University)
• 김광렬(충북대학교 환경공학과) | Kwang-Yul Kim (Department of Environmental Engineering, Chungbuk National University)
• 신수정(충북대학교 목재종이과학과) | Soo-Jeong Shin (Department of Wood and Paper Science, Chungbuk National University)
• 연익준(충주대학교 환경공학과) | Ik-Jun Yeon (Department of Environmental Engineering, Chungju National University) Corresponding author