Identification and thermochemical analysis of high-lignin feedstocks for biofuel and biochemical production

Title
Identification and thermochemical analysis of high-lignin feedstocks for biofuel and biochemical production
Authors
Venugopal MenduAnne E. Harman-WareMark Crocker제정호Jozsef StorkSamuel MortonAndrew PlacidoGeorge HuberSeth DeBolt
Keywords
biofuels; catalytic fast pyrolysis; bio-oil; lignocellulose; endocarp; bioenergy
Issue Date
2011-10
Publisher
BIOTECHNOLOGY FOR BIOFUELS
Citation
VOL 4, 43-1-43-13
Abstract
Background: Lignin is a highly abundant biopolymer synthesized by plants as a complex component of plant secondary cell walls. Efforts to utilize lignin-based bioproducts are needed. Results: Herein we identify and characterize the composition and pyrolytic deconstruction characteristics of highlignin feedstocks. Feedstocks displaying the highest levels of lignin were identified as drupe endocarp biomass arising as agricultural waste from horticultural crops. By performing pyrolysis coupled to gas chromatography-mass spectrometry, we characterized lignin-derived deconstruction products from endocarp biomass and compared these with switchgrass. By comparing individual pyrolytic products, we document higher amounts of acetic acid, 1-hydroxy-2-propanone, acetone and furfural in switchgrass compared to endocarp tissue, which is consistent with high holocellulose relative to lignin. By contrast, greater yields of lignin-based pyrolytic products such as phenol, 2-methoxyphenol, 2-methylphenol, 2-methoxy-4-methylphenol and 4-ethyl-2-methoxyphenol arising from drupe endocarp tissue are documented. Conclusions: Differences in product yield, thermal decomposition rates and molecular species distribution among the feedstocks illustrate the potential of high-lignin endocarp feedstocks to generate valuable chemicals by thermochemical deconstruction.
URI
http://pubs.kist.re.kr/handle/201004/47415
ISSN
17546834
Appears in Collections:
KIST Publication > Article
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