Abstract:
:Lignin valorisation into renewable fuels and platform chemicals is desirable but still encounters major challenges due to lignin's recalcitrant structure, and the lack of cost-, energy-, and material efficient conversion processes. Herein, we report a low-temperature plasma-based route to lignin depolymerisation at mild conditions. The discharge over ethanol surface locally creating a high-energy and reactive environment rich in free electrons, energetic H radicals, and other reactive species, is well suited for lignin depolymerisation. Furthermore, assisted with a Fenton reaction (by adding Fe2O3 and H2O2) to sustain a more oxidative environment, the lignin conversion yield increases from 42.6% to 66.0%. Thus-obtained renewable chemicals are rich in aromatics and dicarboxylic acid derivatives. The proposed strategy on intensifying reactive chemistry by high-power plasmas enables an effective power-to-chemicals conversion of lignin and may provide useful guidelines for modern biorefineries.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Zhou R,Zhou R,Wang S,Mihiri Ekanayake UG,Fang Z,Cullen PJ,Bazaka K,Ostrikov KKdoi
10.1016/j.biortech.2020.123917subject
Has Abstractpub_date
2020-12-01 00:00:00pages
123917eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31189-5journal_volume
318pub_type
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