期刊
BIORESOURCE TECHNOLOGY
卷 196, 期 -, 页码 99-108出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.07.020
关键词
Hydrothermal liquefaction characteristics; Pathways; Crude polysaccharides; Crude proteins; Maillard reaction
资金
- National Science and Technology Program of China [2011BAD14B00]
Crude polysaccharides and proteins extracted from algae were chosen as model materials to investigate the hydrothermal liquefaction (HTL) characteristics and pathways of low-lipid algae. Liquefaction behavior of the two individuals and their binary mixtures with different mass ratios were evaluated under different temperatures. Formation pathways of bio-oil from crude polysaccharides/proteins were proposed. Results showed that polysaccharides had a small contribution to bio-oil (<5%) and approximately 60% distributed in aqueous phase, while proteins played a crucial role on bio-oil formation (maximum 16.29%). Bio-oil from polysaccharides mainly contained cyclic ketones and phenols and from proteins composed of pyrazines, pyrroles and amines. Interaction between polysaccharides and proteins forming polycyclic nitrogenous compounds had a negative effect on bio-oil yield at 220 and 260 degrees C. However, their further decomposition caused increase of bio-oil yield at 300 degrees C. Mixture liquefaction obtained the highest higher heating value (HHV) of bio-oil and energy recovery than polysaccharides/proteins liquefaction at 300 degrees C. (C) 2015 Elsevier Ltd. All rights reserved.
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