Valorization of starchy, cellulosic, and sugary food waste into hydroxymethylfurfural by one-pot catalysis
- Authors
- Yu, Iris K. M.; Tsang, Daniel C. W.; Yip, Alex C. K.; Chen, Season S.; Ok, Yong Sik; Poon, Chi Sun
- Issue Date
- 10월-2017
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Biomass conversion; Biorefinery; Food waste; Metal catalysts; HMF; Waste valorization
- Citation
- CHEMOSPHERE, v.184, pp.1099 - 1107
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMOSPHERE
- Volume
- 184
- Start Page
- 1099
- End Page
- 1107
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/82041
- DOI
- 10.1016/j.chemosphere.2017.06.095
- ISSN
- 0045-6535
- Abstract
- This study aimed to produce a high-value platform chemical, hydroxymethylfurfural (HMF), from food waste and evaluate the catalytic performance of trivalent and tetravalent metals such as AlCl3, CrCl3, FeCl3, Zr(O)Cl-2, and SnCl4 for one-pot conversion. Starchy food waste, e.g., cooked rice and penne produced 4.0-8.1 wt% HMF and 46.0-64.8 wt% glucose over SnCl4 after microwave heating at 140 degrees C for 20 min. This indicated that starch hydrolysis was effectively catalyzed but subsequent glucose isomerization was rate-limited during food waste valorization, which could be enhanced by 40-min reaction to achieve 22.7 wt% HMF from cooked rice. Sugary food waste, e.g., kiwifruit and watermelon, yielded up to 13 wt% HMF over Sn catalyst, which mainly resulted from naturally present fructose. Yet, organic acids in fruits may hinder Fe-catalyzed dehydration by competing for the Lewis sites. In contrast, conversion of raw mixed vegetables as cellulosic food waste was limited by marginal hydrolysis at the studied conditions (120-160 degrees C and 20-40 min). It is interesting to note that tetravalent metals enabled HMF production at a lower temperature and shorter time, while trivalent metals could achieve a higher HMF selectivity at an elevated temperature. Further studies on kinetics, thermodynamics, and reaction pathways of food waste valorization are recommended. (C) 2017 Elsevier Ltd. All rights reserved.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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