Electrochemical reductive extraction of tin from semiconductor plating process wastewater was experimented using synthetic wastewater. Copper and graphite plate were used as a cathode and an anode, respectively. The tin extraction could be optimized in pH 0.5 and polar space of 60 mm. The extraction rate of tin per minute was increased as current and initial tin concentration increased, and more than 87% and 97% of tin could be extracted within 80 minutes at 500 mg/L and 1,000 mg/L of initial tin concentration, respectively. The electrochemical reaction orders and kinetic coefficients were 1.24 ~ 1.26 and 0.004 ~ 0.006 (L/mg)(n − 1)min−1. The residual concentration of tin could be expressed as Ct= (Co −0.246+ 0.0012t)−4.065.

Abstract
 I. 서 론
 II. 실험재료 및 방법
  1. 실험재료 및 장치
  2. 실험방법
  3. 분석
 III. 결과 및 고찰
  1. pH
  2. 극판의 간격
  3. 전류강도
  4. 반응속도
 IV. 결 론
 사 사
 References

• 전관수(영남대학교 환경공학과) | Kwan-Soo Jun Corresponding author
• 권상우(㈜ 에코앤파워) | Sang-Woo Kwon
• 최병운(㈜ 에코앤파워) | Byeong-Woon Choi
• 김대호(영남대학교 환경공학과) | Dae-Ho Kim
• 전화택(영남대학교 환경공학과) | Hwa-Taek Jun