Production of brown algae pyrolysis oils for liquid biofuels depending on the chemical pretreatment methods

Joonhyuk Choi, Jae Wook Choi, Dong Jin Suh, Jeong Myeong Ha, Ji Won Hwang, Hyun Wook Jung, Kwan Young Lee, Hee Chul Woo

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


Based on observations of rapidly growing biochar in fluidization beds, kelp (Saccharina japonica), a species of brown algae, was pretreated for the efficient operation of pyrolysis processes to produce pyrolysis oils. The removal of catalytically active inorganic minerals and the softening of polymeric seaweed structures were performed by means of chemical treatments, including a CaCl2 treatment to isolate valuable and sticky fucoidan and a sulfuric acid treatment to remove catalytically active minerals. The sulfuric acid pretreatment significantly reduced the inorganic elements but did not significantly affect the properties of the pyrolysis oil compared to the non-treated kelp pyrolysis oil. Whereas the non-treated kelp produced significantly large chunks of biochar, which hindered the continuous operation of pyrolysis, the kelp treated with sulfuric acid did not produce aggregated large particles of biochar, thereby offering a means of developing reliable continuous pyrolysis processes.

Original languageEnglish
Pages (from-to)371-378
Number of pages8
JournalEnergy Conversion and Management
Publication statusPublished - 2014 Oct

Bibliographical note

Funding Information:
This work was financially supported by the Korean Ministry of Oceans and Fisheries (Contact No. 20131039449 ).


  • Macroalgae
  • Pretreatment
  • Pyrolysis
  • Saccharina japonica
  • Sulfuric acid

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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