A comparative study of microwave-induced pyrolysis of lignocellulosic and algal biomass

Nan Wang, Arash Tahmasebi, Jianglong Yu, Jing Xu, Feng Huang, Alisa Mamaeva

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74 Citations (Scopus)

Abstract

Microwave (MW) pyrolysis of algal and lignocellulosic biomass samples were studied using a modified domestic oven. The pyrolysis temperature was recorded continuously by inserting a thermocouple into the samples. Temperatures as high as 1170 and 1015°C were achieved for peanut shell and Chlorella vulgaris. The activation energy for MW pyrolysis was calculated by Coats-Redfern method and the values were 221.96 and 214.27kJ/mol for peanut shell and C. vulgaris, respectively. Bio-oil yields reached to 27.7wt.% and 11.0wt.% during pyrolysis of C. vulgaris and peanut shell, respectively. The bio-oil samples from pyrolysis were analyzed by a gas chromatography-mass spectrometry (GC-MS). Bio-oil from lignocellulosic biomass pyrolysis contained more phenolic compounds while that from microalgae pyrolysis contained more nitrogen-containing species. Fourier transform infrared spectroscopy (FTIR) analysis results showed that concentration of OH, CH, CO, OCH3, and CO functional groups in char samples decreased significantly after pyrolysis.

Original languageEnglish
Pages (from-to)89-96
Number of pages8
JournalBioresource Technology
Volume190
DOIs
Publication statusPublished - 1 Aug 2015
Externally publishedYes

Keywords

  • Bio-oil
  • Kinetics
  • Lignocellulosic biomass
  • Microalgae
  • Microwave pyrolysis

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