脱碱赤泥对餐厨垃圾催化热解产物分布的影响

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Abstract In this paper, the effects of de-alkalized red mud on the distribution of food waste pyrolysis products at different pyrolysis temperatures were investigated using a fixed bed reactor, Gas Chromatography-Mass Spectrometry (GC-MS), Fluorescence Spectrophotometry (UV-F), and In-Situ Infrared (In-situ DRIFTS). The results showed that under the same pyrolysis temperature, the formation of pyrolysis gas was inhibited and the production of pyrolysis oil was promoted, with the highest yield of 39.46% at 450℃, by de-alkalized red mud. The pyrolysis oil was mainly dominated by fatty acids, N compounds, and esters. Not only was the decomposition of triglycerides promoted to produce long-chain carboxylic acids but also the cleavage of proteins was promoted to produce aromatic proteins by de-alkalized red mud, which led to the increase of acid content and deepening of the degree of aromatization in the pyrolysis oil. Meanwhile, the significant growth of carboxylic acid functional groups and C≡N absorption peaks in pyrolysis coke further confirmed that the de-alkalized red mud could promote the production of acids and N compounds in pyrolysis oil.

Key words： de-alkalized red mud kitchen waste catalytic pyrolysis pyrolysis oil product distribution

Received: 09 March 2024

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X705

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	Articles by authors
	LIU Liang
	ZENG Hong-liang
	QING Meng-xia
	HE Zi-hang
	WU Jia-jun
	KANG Xiang-jing
	XIANG Jun
	LIU Yi-fan

Cite this article:

LIU Liang,ZENG Hong-liang,QING Meng-xia等. Effect of de-alkalized red mud on the distribution of catalytic pyrolysis products from food waste[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(10): 5678-5686.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I10/5678

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