Journal
BIORESOURCE TECHNOLOGY
Volume 272, Issue -, Pages 249-258Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.10.032
Keywords
Solar energy; Thermolysis; Electrolysis; Lignin; Depolymerization
Funding
- National Nature Science Foundation of China [21376049, 51704076, 21808030]
- Nature Science Foundation of Heilongjiang Province [QC2018008, QC2018009]
- Innovative Team of Science and Technology in Heilongjiang Higher Education Institutes [2013TD004]
- University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province [UNPYSCT-2018044]
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In this paper, solar binary chemical depolymerization, that is Solar Thermal Electrochemical Process (STEP), was implemented for an effective breaking of lignin into small molecules and hydrogen. Compared with the conventional unitary chemical thermolysis, solar binary chemical depolymerization of lignin has high efficiencies of the liquefaction and gasification with the low coke, and accompanied by the abundant production of hydrogen. And the reaction temperature of the STEP process was greatly lowered by an intervention of the electrolysis. The results showed that the total conversion and liquefaction of the lignin yielded 87.22% and 57.72% under a constant current of 0.4 A at 340 degrees C. Further characterizations show that lignin has been successfully decomposed into small molecules with high added-value and hydrogen by a combination of the thermolysis and electrolysis. And the particle size of aggregates and the color degree in the lignin aqueous solution was obviously decreased after the STEP process.
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