Two-in-one fuel synthetic bioethanol-lignin from lignocellulose with sewage sludge and its air pollutants reduction effects

Ju Hyoung Park, Min Ho Jin, Young Joo Lee, Gyu Seob Song, Jong Won Choi, Dong Wook Lee, Young Chan Choi, Se Joon Park, Kwang Ho Song, Joeng Geun Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Developing effective, economical, and environmentally sound approaches for sewage sludge management remains an important global issue. In this paper, we propose a bioethanol-lignin (nonfood biomass)-based sewage sludge upgrading process for enhancing the heating value and reducing air pollutants of hybrid sewage sludge fuel (HSF) for the effective management of sewage sludge. Sewage sludge paste with the lignin-CaO solution implies drying at 105 C accompanied by torrefaction at 250 C. During torrefaction, moisture and partly volatile matter begin to evaporate, and are almost vaporized out to the surface. In this study, the proposed process enhances the net caloric value (NCV) to 37%. The lignin-embedded HSF shows a two-in-one combustion peak regardless of the mixing ratio, resulting in a 70% reduction of unburned carbon (UBC) emissions, which is one of the particular matter (PM) sources of combustion flue gas. Other air pollutants, such as CO, hydrocarbon, NOx, and SOx, were also reduced by the proposed process. In particular, SOx emission remained at ~1 ppm (average value) regardless of the sulfur content of the fuel.

Original languageEnglish
Article number3072
JournalEnergies
Volume12
Issue number16
DOIs
Publication statusPublished - 2019 Aug 9

Keywords

  • Biomass
  • Lignin
  • Lignocellulose
  • Sewage sludge
  • Upgrading fuel

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Two-in-one fuel synthetic bioethanol-lignin from lignocellulose with sewage sludge and its air pollutants reduction effects'. Together they form a unique fingerprint.

  • Cite this

    Park, J. H., Jin, M. H., Lee, Y. J., Song, G. S., Choi, J. W., Lee, D. W., Choi, Y. C., Park, S. J., Song, K. H., & Kim, J. G. (2019). Two-in-one fuel synthetic bioethanol-lignin from lignocellulose with sewage sludge and its air pollutants reduction effects. Energies, 12(16), [3072]. https://doi.org/10.3390/en12163072