01553nam a2200205 a 450000100080000000500110000800800410001910000190006024500930007926002330017252007620040565000120116765000440117970000190122370000250124270000170126770000220128470000210130670000200132713398552022-01-12       2008    bl uuuu     u00u1 u    #d1 aNOVOTNY, E. H.  a13C-NMR spectroscopy evaluation of different pyrolysis feedstock.h[electronic resource]  aIn: ANNUAL INTERNATIONAL MEETING OF THE INTERNATIONAL BIOCHAR INITIATIVE, 2., 2008, Newcastle. Biochar, sustainability and security in a changing climate. Newcastle: International Biochar Initiative, 2008. p. 26. Ref. B18.c2008  aDifferent feedstocks and different pyrolysis processes produce carbonized materials (biochar) with different properties. The properties of these materials are very important when considering their agricultural uses. The technique of 13C Nuclear Magnetic Resonance (13C-NMR) is a very powerful tool for the characterization of the complex products, especially when aided by multivariate statistics, such as Principal Component Analysis (PCA). In this work, a series of feedstocks, embracing agro-industrial residues (sugarcane straw, orange bagasse, grass straw, soybeans, castor oil and Jatropha cake), urban residues (sewage sludges) and industrial residues (blended refuse) were submitted to two different fast pyrolysis processes, said processes 1 and 2.  aBiochar  aNuclear magnetic resonance spectroscopy1 aROMEIRO, G. A.1 aFIGUEIREDO, M. K. K.1 aROCHA, J. D.1 aAZEVEDO, E. R. de1 aBONAGAMBA, T. J.1 aHAYES, M. H. B.