" High value-added chemicals and BIoreSIns from alGae biorefineries produced from CO2 provided by industrial emissions "


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Investigation on co-pyrolysis of lignocellulosic biomass and amino acids using TG-FTIR and Py-GC/MS

Co-pyrolysis of lignocellulosic biomass and microalgae could greatly improve bio-oil quality. In order to understand the interaction, nitrogen transformation mechanism, and better use lignocellulosic biomass and microalgae, co-pyrolysis of lignocellulosic biomass (bamboo waste (Ba)) and amino acids (glutamic acid (Glu) and aspartic acid (Asp)) was performed by TG-FTIR and Py-GC/MS technique. Results showed that individual pyrolysis of Glu and Asp formed 52% pyrrolidinone and 75% maleimide through intramolecular dehydration reactions, respectively, with the releasing of CO2, CO and NH3. Besides, co-pyrolysis of Ba with Glu and Asp decreased the biomass decomposition temperature largely. Furthermore, co-pyrolysis greatly increased the yield of CO2 and NH3, and promoted the formation of phenols, O-containing species (but oxygen yield decreased), while inhibited the generation of N-species (decreased about 50%) in bio-oil, through strong Maillard reaction, ketonization, deamination, and decarboxylation reactions. At last, the possible reaction pathways of co-pyrolysis of lignocellulosic biomass and amino acids were proposed. In conclusion, co-pyrolysis of lignocellulosic biomass and amino acids could significantly improve the quality of bio-oil, and effectively control the nitrogen transformation into bio-oil.

» Author: Hanping Chen, Yingpu Xie, Wei Chen, Mingwei Xia, Kaixu Li, Zhiqun Chen, Yingquan Chen, Haiping Yang

» Reference: 10.1016/j.enconman.2019.06.010

» Publication Date: 15/09/2019

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [613680].

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