Co-pyrolysis of corn cob and waste cooking oil in a fixed bed

Guanyi Chen; Cong Liu; Wenchao Ma; Xiaoxiong Zhang; Yanbin Li; Beibei Yan; Weihong Zhou

doi:10.1016/j.biortech.2014.05.090

Co-pyrolysis of corn cob and waste cooking oil in a fixed bed

Bioresour Technol. 2014 Aug:166:500-7. doi: 10.1016/j.biortech.2014.05.090. Epub 2014 Jun 2.

Authors

Guanyi Chen¹, Cong Liu², Wenchao Ma³, Xiaoxiong Zhang², Yanbin Li², Beibei Yan², Weihong Zhou⁴

Affiliations

¹ School of Environmental Science and Engineering/State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China. Electronic address: chen@tju.edu.cn.
² School of Environmental Science and Engineering/State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China.
³ School of Environmental Science and Engineering/State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China. Electronic address: mawc916@tju.edu.cn.
⁴ School of Environmental Science and Engineering/State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China; School of Civil Engineering, Liaoning University of Science and Technology, Anshan, China.

PMID: 24951937
DOI: 10.1016/j.biortech.2014.05.090

Abstract

Corn cob (CC) and waste cooking oil (WCO) were co-pyrolyzed in a fixed bed. The effects of various temperatures of 500 °C, 550 °C, 600 °C and CC/WCO mass ratios of 1:0, 1:0.1, 1:0.5, 1:1 and 0:1 were investigated, respectively. Results show that co-pyrolysis of CC/WCO produce more liquid and less bio-char than pyrolysis of CC individually. Bio-oil and bio-char yields were found to be largely dependent on temperature and CC/WCO ratios. GC/MS of bio-oil show it consists of different classes and amounts of organic compounds other than that from CC pyrolysis. Temperature of 550 °C and CC/WCO ratio of 1:1 seem to be the optimum considering high bio-oil yields (68.6 wt.%) and good bio-oil properties (HHV of 32.78 MJ/kg). In this case, bio-char of 24.96 MJ/kg appears attractive as a renewable source, while gas with LHV of 16.06 MJ/Nm(3) can be directly used in boilers as fuel.

Keywords: Bio-oil; Co-pyrolysis; Corn cob; Fixed bed; Waste cooking oil.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biofuels*
Charcoal / chemistry
Conservation of Energy Resources / methods
Cooking*
Gas Chromatography-Mass Spectrometry
Hot Temperature
Waste Management / methods*
Waste Products
Zea mays / chemistry*

Substances

Biofuels
Waste Products
biochar
Charcoal