海岸线塑料垃圾低温热解及其污染物排放特征

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Abstract This study investigated the characteristics of low-temperature pyrolysis of shoreline plastics under different salinity conditions, including 10mg/g, 35mg/g, and 500mg/g NaCl. The composition of pyrolysis products was analyzed. Results showed that CO and CH₄ were the main gas products of the plastics collected from sandy and rocky shorelines at 550℃. Moreover, NaCl could improve the gas yield, and the increase was most obvious at 35mg/g. The pyrolysis gas yield of sandy and rocky shoreline plastics increased from 18.97% to 26.07%, and from 19.27% to 30.12%, respectively. However, NaCl decreased the gas release rate. Most NaCl remained in the solid residue, while few chlorine-containing substances were detected in other products. In addition, NaCl could also reduce the generation of particulate matter of rocky shoreline plastics. These findings indicated that the discharge of chlorine pollutants from shoreline plastics can be effectively controlled via low-temperature pyrolysis.

Key words： shoreline plastic waste low-temperature pyrolysis product composition pollutant emission

Received: 26 January 2021

PACS:	X705
	X55

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	WANG Qian
	CHEN Qin-dong
	ZHANG Jia-wen
	WU Hua-nan
	XU Qi-yong

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WANG Qian,CHEN Qin-dong,ZHANG Jia-wen等. Emission characteristics of shoreline plastics during low-temperature pyrolysis process[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(8): 3684-3692.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I8/3684

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