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In this study, the influence of temperature on the pyrolytic product characteristics and economic costs was investigated and an optimum operational temperature was determined. Because of the relatively high contents of CH4 (21 vol%) and H2 (32 vol%), the low heat value of gas at 750 °C reached 17.64 MJ/m3, while the largest yield of gas was achieved at 950 °C. The obtained oil could be divided into...
The key parameters for biomass hydrothermal treatment were optimized for product distribution in this study on the basis of a L16 (45) orthogonal experiment design. Results showed that biomass species, particle size, and hydrothermal temperature significantly affected heavy oil yield. By contrast, the effect of biomass concentration was negligible. The maximum heavy oil yield was 28.00 wt.% at the...
Hydrothermal carbonization of water hyacinth was experimentally conducted in the range of 30 min to 24 h at 240 °C, chemical and structural properties of hydrochar products were investigated. Oxygen/carbon ratio, and hydrogen/carbon ratio in all hydrochar products were 0.19–0.45, and 0.94 to 1.51. Higher heating value of hydrochar products was 16.83 MJ/kg to 20.63 MJ/kg. Residence time had little...
The main aim of the present study was to investigate the characteristics of products from hydrothermal treatments of cellulose in an autoclave at various temperatures (200 °C–400 °C) and residence times (5 min–2 h). The gas products mainly consisted of CO 2 , CO, CH 4, and H 2 at 250 °C–400 °C for 30 min. Heavy oil mainly contained furans, phenols, carboxylic acids, aldehydes,...
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