Performance and potential appraisal of various microalgae as direct combustion fuel

Hong Il Choi, Jeong Seop Lee, Jin Won Choi, Ye Sol Shin, Young Joon Sung, Min Eui Hong, Ho Seok Kwak, Chan Young Kim, Sang Jun Sim

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)


Direct combustion of biomass is considered the most effective and simple means to contribute to CO2 reduction. In this context, the life-cycle potential of microalgal solid fuel, which has been overlooked so far, was comprehensively scrutinized ranging from cultivation to direct combustion. According to the quantitative data, using the raw fuel was confirmed to offer great benefits over the conventional lipid-targeted microalgal fuel systems through exploiting all of the biomass’ energy potential, thereby being able to significantly increase the energy yield from biomass. The solid fuel is shown to exhibit diverse positive aspects owing to its remarkable calorific value, productivity and CO2 fixation ability. The combustion test reveals coal-microalgae co-combustion brings beneficial consequences on combustibility and environmental impacts with no notable thermal efficiency drop. This holistic appraisal shows microalgae patently possess high potential as a direct combustion fuel, even outperforming that of extensively used woody fuels.

Original languageEnglish
Pages (from-to)341-349
Number of pages9
JournalBioresource technology
Publication statusPublished - 2019 Feb


  • Direct combustion
  • Microalgae
  • Negative emissions
  • Solid fuel
  • The holistic analyses

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


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