title: Pyrolysis characteristics and kinetics of the alga Saccharina japonica.
abstract: Saccharina japonica can be converted to bio-oil, gas, and char through pyrolysis. In this study, the pyrolysis characteristics of S. japonica were investigated using a thermogravimetric analyzer. Most of the materials decomposed between 200°C and 350°C at heating rates of 10-20°C/min. The apparent activation energy increased from 102.5kJmol(-1) to 269.7kJmol(-1) with increasing pyrolysis conversion. The kinetic parameters of S. japonica pyrolysis were determined using nonlinear least-squares regression of the experimental data assuming first-order kinetics. The kinetic rate constants indicated that the predominant reaction pathway was B (bio-oil) to C (gas; C(1)-C(4)), rather than A (S. japonica) to B (bio-oil) and/or to C (gas; C(1)-C(4)). The proposed lumped kinetics of S. japonica pyrolysis offers a guide for the scale-up of the process at the research and industrial level.
authors.affiliation: Department of Chemical Engineering, Kangwon National University, 1 Joongang-ro, Samcheok, Gangwon-do 363-883, Republic of Korea. sskim2008@kangwon.ac.kr
authors.forename: Seung-Soo
authors.initials: SS
authors.lastname: Kim
authors.forename: Hoang Vu
authors.initials: HV
authors.lastname: Ly
authors.forename: Gyeong-Ho
authors.initials: GH
authors.lastname: Choi
authors.forename: Jinsoo
authors.initials: J
authors.lastname: Kim
authors.forename: Hee Chul
authors.initials: HC
authors.lastname: Woo
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000295:instrumentation; D002606:Charcoal / Q000737:chemistry; D004602:Elements; D007700:Kinetics; D009821:Oils / Q000737:chemistry; D000459:Phaeophyceae / Q000737:chemistry*; D013696:Temperature; D013818:Thermogravimetry
chemical_list: D004602:Elements; D009821:Oils; C540010:biochar; D002606:Charcoal