Behavior of Stable Carbon and Stable Nitrogen Isotopes during Hydrothermal Carbonization of biomass
作者： M. Toufiq Reza , Simon R. Poulson , Silvia Román , Charles J. Coronella
DOI: 10.1016/J.JAAP.2018.02.006
关键词: Hydrothermal carbonization 、 Carbon 、 Isotopes of carbon 、 Environmental chemistry 、 Isotope 、 Biomass 、 Chemistry 、 Pyrolysis 、 Stable isotope ratio 、 Isotopes of nitrogen
摘要: Abstract This work studied the changes of stable isotope compositions (C and N) diverse biomass feedstocks (loblolly pine, cow manure, sewage biosolids) as a result hydrothermal carbonization (HTC), provides insight into degradation pathways based on these changes. HTC was conducted at different times (5 30 min) temperatures (180, 220, 260 °C) produced hydrochars were characterized in terms ultimate, proximate, carbon (δ13C), nitrogen (δ15N) compositions. In addition to reaction conditions, results showed that differences feedstock composition, closely related reactivity, determined large part behavior. general, densification associated with corresponded small but consistent decrease δ13C values. contrast, there significant increases δ15N values during HTC, larger shifts increased severity. These trends isotopic compositions, characteristic elemental indices (O/C, H/C, O/N, H/N), allowed for identification particular individual feedstocks.
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