Pyrolysis characteristics and kinetics of co-pyrolysis of microalgae and plastics

TANG Zi-yue; CHEN Wei; CHEN Xu; CHEN Ying-quan; HU Qiang; CHENG Wei; YANG Hai-ping; CHEN Han-ping

doi:10.19906/j.cnki.JFCT.2023008

Volume 51 Issue 8

Aug. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(8): 1145-1154

TANG Zi-yue, CHEN Wei, CHEN Xu, CHEN Ying-quan, HU Qiang, CHENG Wei, YANG Hai-ping, CHEN Han-ping. Pyrolysis characteristics and kinetics of co-pyrolysis of microalgae and plastics[J]. Journal of Fuel Chemistry and Technology, 2023, 51(8): 1145-1154. doi: 10.19906/j.cnki.JFCT.2023008

Citation:

TANG Zi-yue, CHEN Wei, CHEN Xu, CHEN Ying-quan, HU Qiang, CHENG Wei, YANG Hai-ping, CHEN Han-ping. Pyrolysis characteristics and kinetics of co-pyrolysis of microalgae and plastics[J]. Journal of Fuel Chemistry and Technology, 2023, 51(8): 1145-1154. doi: 10.19906/j.cnki.JFCT.2023008

Citation:

TANG Zi-yue, CHEN Wei, CHEN Xu, CHEN Ying-quan, HU Qiang, CHENG Wei, YANG Hai-ping, CHEN Han-ping. Pyrolysis characteristics and kinetics of co-pyrolysis of microalgae and plastics[J]. Journal of Fuel Chemistry and Technology, 2023, 51(8): 1145-1154. doi: 10.19906/j.cnki.JFCT.2023008

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Pyrolysis characteristics and kinetics of co-pyrolysis of microalgae and plastics

doi: 10.19906/j.cnki.JFCT.2023008

TANG Zi-yue^1
,,
CHEN Wei^2
,,
CHEN Xu^3
,,
CHEN Ying-quan^1
,,
HU Qiang^1
,,
CHENG Wei^1
,,
YANG Hai-ping^{1
,
,},
CHEN Han-ping^1
,

1.
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2.
College of Engineering, Nanjing Agricultural University, Nanjing 210095, China
3.
School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China

Funds: The project was supported by the National Natural Science Foundation of China Outstanding Youth Program (52125601) and National Key Research and Development Program (2018YFB1501403)

Received Date: 2022-10-29
Accepted Date: 2022-12-27
Rev Recd Date: 2022-12-07

Available Online: 2023-01-18

Publish Date: 2023-08-01

Abstract

Abstract

Plastics as co-feeding can effectively improve the quality of microalgae pyrolysis oil. The effects of co-pyrolysis of microalgae and polyethylene (PE), polystyrene (PS) and polypropylene (PP) on pyrolysis characteristics and kinetics were investigated by TG-FTIR. There is an interaction between microalgae and plastic, which increases the pyrolysis temperature of plastic and inhibits the formation of coke. PE can effectively reduce the residual yield, while the pyrolysis temperature of PS obviously transfers to high temperature during co-pyrolysis. In addition, co-pyrolysis reduces the average activation energy, especially low proportion of plastic. Besides, the co-pyrolysis of microalgae with PE promotes C−C fracture to release CO₂ and −CH₃ and C=C−H. However, the co-pyrolysis of microalgae and PP inhibits the release of CO₂, and intensifies the formation of aromatic hydrocarbon C−H from polypropylene. Moreover, the co-pyrolysis of microalgae and PS can slightly promote the formation of C=O and NH₃, and aggravate the hydrogen transfer of microalgae to break aromatic ring of polystyrene and release CH₃.
- microalgae,
- plastics,
- co-pyrolysis,
- TG-FTIR,
- kinetics

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References(27)

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