Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characterization of Disinfection By-Products by Chlamydomonas pulsatilla

녹조류(Chlamydomonas pulsatilla)에 의한 염소소독부산물 생성과 그 특성

  • Kum, Heejung (Graduate School of Health Science and Management, College of Medicine, Yonsei University) ;
  • Kim, Junsung (Department of Civil and Environmental Engineering, University of Massachusetts in Amherst) ;
  • Chung, Yong (Graduate School of Health Science and Management, College of Medicine, Yonsei University)
  • 금희정 (연세대학교 보건대학원 및 의과대학) ;
  • 김준성 (메사추세츠 주립대학) ;
  • 정용 (연세대학교 보건대학원 및 의과대학)
  • Received : 2005.07.12
  • Accepted : 2005.09.01
  • Published : 2005.09.30
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Abstract

This study was conducted to evaluate the chlorinated disinfection by-products formation potential (DBPFP) produced from the cell and extracellular product (ECP) of Chlamydomonas pulsatilla after chlorination. Reaction yields of DBPs produced by C. pulsatilla of ECP and the cell were $0.007{\mu}mol/mg{\cdot}C$ and $0.808{\mu}mol/mg{\cdot}C$ respectively, Also, SUVA values of ECP and the cell were measured as $0.313L/mg{\cdot}m$ and $1.052L/mg{\cdot}m$ respectively, The DOC of cell was found to be lower than that of ECP, while the SUVA value and reaction yields for the cell were higher than those of ECP. For ECP, most of the DBPFP was composed of trihalomethanes (THM; 47.3%) and haloacetonitriles (HAN; 38,83%). THM and HAN were the major DBPFP produced by the cell. Chloroform was found to be the major THM compound; 98.3% for ECP and 99.98% for the cell. Dichloroacetic acid (DCAA) and dichloroacetonitrile (DCAN) were identified as the major haloacetic acid (HAA) and HAN compounds formed by ECP and the cell as a precursor, respectively. As the chlorine dose was increased, concentrations of DOC, THMs, and HANs were increased. However, the chlorine dose decreased the concentration of chlorophyll-a.

Keywords

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