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Optimization of hydrochar generated from real food waste using titration methods

음식물폐기물-하이드로촤 최적 반응조건 도출을 위한 적정법 응용

  • Choi, Minseon (Department of Chemistry, Seoul Women's University) ;
  • Choi, Seong-Eun (Department of Chemistry, Seoul Women's University) ;
  • Han, Sol (Department of Chemistry, Seoul Women's University) ;
  • Bae, Sunyoung (Department of Chemistry, Seoul Women's University)
  • 최민선 (서울여자대학교 화학과) ;
  • 최성은 (서울여자대학교 화학과) ;
  • 한솔 (서울여자대학교 화학과) ;
  • 배선영 (서울여자대학교 화학과)
  • Received : 2014.09.19
  • Accepted : 2015.01.12
  • Published : 2015.02.25

Abstract

Hydrochar has been generated from food waste via hydrothermal carbonization (HTC) reaction. As a solid product of HTC reaction, hydrochar has a great potential as an adsorbent of pollutants from the various media. The surface area and pore volumes are very important parameters to be served as an adsorbent. It requires an expensive equipment and consumes time to measure those parameter. Therefore, titration methods including iodine and methylene blue adsorption were evaluated to be correlated with that of BET analysis. Even though the absolute values of the computed surface area and pore volumes were not able to be matched directly, the patterns of change were successfully correlated. Among the reaction conditions, the reaction time and temperature at $230^{\circ}C$ for 4 h was determined as an optimization condition, which confirmed by titration method and BET analysis. Titration method for surface area and pore volumes computed by combination of iodine and methylene blue adsorbing values would be a simple and fast way of determining the optimization condition for hydrochar as an adsorbent produced by HTC reaction.

Keywords

hydrochar;iodine number;methylene blue number;surface area;pore volume;adsorbent;hydrothermal carbonization reaction

Acknowledgement

Supported by : 한국연구재단

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