TY - JOUR
T1 - Chemical and morphological changes in hydrochars derived from microcrystalline cellulose and investigated by chromatographic, spectroscopic and adsorption techniques
AU - Diakité, Mamadou
AU - Paul, Andrea
AU - Jäger, Christian
AU - Pielert, Judith
AU - Mumme, Jan
PY - 2013/12/1
Y1 - 2013/12/1
N2 - Hydrothermal carbonization (HTC) can be used for converting the biomass into a carbon-rich material, whose application as a fuel requires higher heating value, whereas soil amendment needs stable carbon. This work was focused on the characterization of hydrochars derived from microcrystalline cellulose. The chars were investigated using elemental analysis, Brunauer-Emmett-Teller technique, nuclear magnetic resonance spectroscopy, Raman, Fourier transform infrared, and electron spin resonance spectroscopy. Severity in temperature between 230 and 270. °C with reaction times between 2 and 10. h only affect the carbon content moderately. The results show that aromatization of HTC chars correlates well with temperature, which was further supported by the increase of organic radicals with decreasing g values at higher temperatures. Based on these results, the energetic use of chars favors mild HTC (T<. 230. °C and t≤. 6. h), while the soil amendement favors serve conditions (T≥. 230. °C, and t>. 6. h).
AB - Hydrothermal carbonization (HTC) can be used for converting the biomass into a carbon-rich material, whose application as a fuel requires higher heating value, whereas soil amendment needs stable carbon. This work was focused on the characterization of hydrochars derived from microcrystalline cellulose. The chars were investigated using elemental analysis, Brunauer-Emmett-Teller technique, nuclear magnetic resonance spectroscopy, Raman, Fourier transform infrared, and electron spin resonance spectroscopy. Severity in temperature between 230 and 270. °C with reaction times between 2 and 10. h only affect the carbon content moderately. The results show that aromatization of HTC chars correlates well with temperature, which was further supported by the increase of organic radicals with decreasing g values at higher temperatures. Based on these results, the energetic use of chars favors mild HTC (T<. 230. °C and t≤. 6. h), while the soil amendement favors serve conditions (T≥. 230. °C, and t>. 6. h).
KW - ATR-FTIR-spectroscopy
KW - Hydrochar
KW - Hydrothermal carbonization
KW - Microcrystalline cellulose
KW - NMR-spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84886259861&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2013.09.129
DO - 10.1016/j.biortech.2013.09.129
M3 - Article
C2 - 24157681
AN - SCOPUS:84886259861
SN - 0960-8524
VL - 150
SP - 98
EP - 105
JO - Bioresource technology
JF - Bioresource technology
ER -