Abstract：
:The catalytic activity of engineered biochar was scrutinized for generation of glucose and hydroxymethylfurfural (HMF) from starch-rich food waste (bread, rice, and spaghetti). The biochar catalysts were synthesized by chemical activation of pinewood sawdust with phosphoric acid at 400-600 °C. Higher activation temperatures enhanced the development of porosity and acidity (characterized by COPO3 and CPO3 surface groups), which imparted higher catalytic activity of H3PO4-activated biochar towards starch hydrolysis and fructose dehydration. Positive correlations were observed between HMF selectivity and ratio of mesopore to micropore volume, and between fructose conversion and total acid density. High yields of glucose (86.5 Cmol% at 150 °C, 20 min) and HMF (30.2 Cmol% at 180 °C, 20 min) were produced from rice starch and bread waste, respectively, over H3PO4-activated biochar. These results highlighted the potential of biochar catalyst in biorefinery as an emerging application of engineered biochar.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Cao L,Yu IKM,Tsang DCW,Zhang S,Ok YS,Kwon EE,Song H,Poon CSdoi
10.1016/j.biortech.2018.07.048subject
Has Abstractpub_date
2018-11-01 00:00:00pages
242-248eissn
0960-8524issn
1873-2976pii
S0960-8524(18)30945-3journal_volume
267pub_type
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