Thermochemical valorization of paper deinking residue through microwave-assisted pyrolysis

Zhanrong Zhang, Avtar S. Matharu

Research output: Chapter in Book/Report/Conference proceedingChapter


Paper deinking residue (DIR) is a composite waste material generated from paper deinking processes. It is currently underutilized, and its valorization represents both an environmental and economic burden for relative industries. Effective valorization of this low-value waste stream is crucial for paper recycling industries to improve their competitiveness and profitability. Pyrolysis is a promising thermochemical technology to convert biomass/wastes into value-added products. The integration of microwave irradiation as an alternative heating source allows pyrolysis processes to be carried out in a much more efficient and convenient manner. In this chapter, the thermochemical valorization of DIR through pyrolysis and potential applications of its pyrolysis products are demonstrated. Furthermore, the application of microwave-assisted pyrolysis at relatively low temperatures (< 200≥C) to exploit potential value of DIR is highlighted in a case study, which provides an example of how green and sustainable technologies could contribute to recover value from wastes and generate wealth.

Original languageEnglish
Title of host publicationWaste Biorefinery
Subtitle of host publicationPotential and Perspectives
Number of pages22
ISBN (Electronic)9780444639929
ISBN (Print)9780444639936
Publication statusPublished - 1 Jan 2018


  • Bio-oil
  • Microwave heating
  • Microwave residue
  • Paper deinking residue
  • Pyrolysis
  • Valorization

Cite this