Welcome to Biomass Chemical Engineering,

Biomass Chemical Engineering ›› 2020, Vol. 54 ›› Issue (3): 18-24.doi: 10.3969/j.issn.1673-5854.2020.03.003

• Research Report • Previous Articles     Next Articles

Effect of Red Mud on Bio-oil from Catalytic Pyrolysis of Corn Straw

Yiqing WANG,Lihong WANG*(),Andong ZHANG,Wentan TANG,Zhihe LI,Hongzhen CAI   

  1. School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
  • Received:2019-08-05 Online:2020-05-30 Published:2020-06-13
  • Contact: Lihong WANG E-mail:wanglh@sdut.edu.cn


Corn stalk was pyrolyzed at 500 ℃ with red mud, which calcined under different temperature, to investigate the effect of red mud addition on the bio-oil composition. TG-DTG and XRD analysis of the calcined red mud indicated that the red mud dehydrated after being calcined under 600 ℃(RM600), and decomposed completely and sintered when it calcined at 1 000 ℃(RM1000). GC/MS analysis of the bio-oil implied that both the red mud dried at 105 ℃(RM) and that calcined at 600 ℃ substantially promoted the ketonization reactions of carboxylic acids. With the addition of RM and RM600, the carboxylic acids content in the bio-oil decreased, correspondingly the ketones content in the bio-oil increased. The acid-reducing effect of RM was wore obvious, as the mass ratio of corn stalk and RM was 1:5, the amount of acids in the bio-oil decreased to 0.90% from 23.85% which was obtained without red mud. In addition, RM and RM600 had a positive effect on the furans formation while suppressed the formation of sugars and aldehydes. However, the red mud calcined under 1 000 ℃ posed a little effects on the bio-oil composition due to the sintering.

Key words: red mud, corn straw, fast pyrolysis, bio-oil

CLC Number: