Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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A study on the removal of heavy metals in groundwater by Alginate-cellulose beads

알긴산-셀룰로오스 비드에 의한 지하수 내 중금속 제거 연구

  • Sujeong Lee (Department of Environmental Engineering, University of Seoul) ;
  • Ihnsup Han (Department of Environmental Engineering, University of Seoul)
  • 이수정 (서울시립대학교 환경공학과) ;
  • 한인섭 (서울시립대학교 환경공학과)
  • Received : 2023.02.21
  • Accepted : 2023.04.14
  • Published : 2023.04.15
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Abstract

To raise the physical strength of alginate beads, this study manufactured alginate-cellulose bead by adding cellulose to alginate, and wanted to identify whether falginate-cellulose beads were sufficiently efficient in removing heavy metals. To find out optimal amounts of alginate and cellulose injection, this study conducted a pilot study, and repeated experiments proved that alginate 2 w/v% + cellulose 1 w/v% were the optimal amounts in manufacturing beads. Using micro materials tester, this study compared strengths of alginate beads and alginate-cellulose beads. Choosing Cd2+, Pb2+, and Ni2+ as materials to be removed, this study analyzed concentrations of them before and after the treatment. Experiments showed that, compared with alginate beads, the strength of alginate-cellulose beads was 2.26 times stronger, and that the latter could remove 98.22%, 99.99%, and 92.57% of Cd2+, Pb2+, Ni2+, respectively. While addition of cellulose to alginate made the absorption rate drop by about 1%, the beads were still highly efficient in removing heavy metals. Accordingly, it seems that alginate-cellulose beads can be used in removing heavy metals.

Keywords

Acknowledgement

본 연구는 서울녹색환경지원센터(SGEC) 연구개발사업의 일환으로 수행되었으며, 지원에 감사드립니다.

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