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Waste Manag. 2017 Feb;60:357-362. doi: 10.1016/j.wasman.2016.09.008. Epub 2016 Sep 10.

Upgraded bio-oil production via catalytic fast co-pyrolysis of waste cooking oil and tea residual.

Author information

1
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, No. 2 Sipailou, Xuanwu District, Nanjing, Jiangsu 210096, China.
2
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, No. 2 Sipailou, Xuanwu District, Nanjing, Jiangsu 210096, China. Electronic address: zzhong@seu.edu.cn.
3
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, No. 2 Sipailou, Xuanwu District, Nanjing, Jiangsu 210096, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA. Electronic address: zhangbo8848@yeah.net.
4
National Engineering Research Center of Turbo-generator Vibration, Southeast University, Nanjing 210096, Jiangsu Province, China.
5
Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.

Abstract

Catalytic fast co-pyrolysis (co-CFP) offers a concise and effective process to achieve an upgraded bio-oil production. In this paper, co-CFP experiments of waste cooking oil (WCO) and tea residual (TR) with HZSM-5 zeolites were carried out. The influences of pyrolysis reaction temperature and H/C ratio on pyrolytic products distribution and selectivities of aromatics were performed. Furthermore, the prevailing synergetic effect of target products during co-CFP process was investigated. Experimental results indicated that H/C ratio played a pivotal role in carbon yields of aromatics and olefins, and with H/C ratio increasing, the synergetic coefficient tended to increase, thus led to a dramatic growth of aromatics and olefins yields. Besides, the pyrolysis temperature made a significant contribution to carbon yields, and the yields of aromatics and olefins increased at first and then decreased at the researched temperature region. Note that 600°C was an optimum temperature as the maximum yields of aromatics and olefins could be achieved. Concerning the transportation fuel dependence and security on fossil fuels, co-CFP of WCO and TR provides a novel way to improve the quality and quantity of pyrolysis bio-oil, and thus contributes bioenergy accepted as a cost-competitive and promising alternative energy.

KEYWORDS:

Bioenergy; Catalytic fast co-pyrolysis; Synergistic effect; Tea residual; Waste cooking oil

PMID:
27625179
DOI:
10.1016/j.wasman.2016.09.008
[Indexed for MEDLINE]

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