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KMID : 0385520150280010040
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Analytical Science & Technology
2015 Volume.28 No. 1 p.40 ~ p.46
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Optimization of hydrochar generated from real food waste using titration methods
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Choi Min-Seon
Choi Seong-Eun
Han Sol
Bae Sun-young
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Abstract
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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 oC 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
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KEYWORD
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hydrochar, iodine number, methylene blue number, surface area, pore volume, adsorbent, hydrothermal carbonization reaction,
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