Effect of temperature and times by hydrothermal carbonization process from sawdust and bagasse for carbon materials supporter

Abstract

Carbon supporter from biomass has been fabricated by hydrothermal carbonization due to this process changes the structure of lignocellulose including cellulose, hemicellulose and lignin. The applications from carbon support are gaining in importance due to decreasing supply of fossil fuels and growing environmental concerns. Hydrothermal carbonization process was used to upgrade biomass such as sawdust and bagasse varying temperature at 160 to 200 o C and varying times at 4 to 24 hr with deionized water 120 ml and 60 ml, respectively. The biochars from sawdust and bagasse under hydrothermal carbonization conditions were characterized by Fourier transform infrared spectroscopy (FT-IR). It showed that the most hydroxyl group from this samples was decreased due to cellulose and hemicellulose from biochars were decomposed over than 200 o C. The Biochars yield from sawdust and bagasse by hydrothermal carbonization conditions was determined from weight loss after hydrothermal carbonization process, which is Biochars yield were decreased with increasing hydrothermal carbonization temperature because lignocellulose was decomposed at high temperature and time. The morphology of Biochars were investigated by scanning electron microscope (SEM). It represented the porous structure was inflated to increasing hydrothermal carbonization temperature.

Characterization of ball-milled bamboo-based activated carbon treated with KMnO4 and KOH as activating agents

“…The result of the FTIR analysis showed that lignin content was still high and only fractionally reduced, while cellulose and hemicellulose content was very limited. This finding was in accordance with the research finding of Sumtong et al (2017), which stated that lignin content was only slightly decomposed while cellulose and hemicellulose were almost entirely decomposed in hydrothermal process.…”