Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
Thermal Behavior and Kinetic Study of the Effects of Zinc-Modified Biochar Catalyst on Lignin and Low-Density Polyethylene (LDPE) Co-Pyrolysis
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org
Citation: Transactions of the ASABE. 61(6): 1783-1793. (doi: 10.13031/trans.12968) @2018
Authors: Quan Bu, Kun Chen, Hervan Marion Morgan, Jr., Jianghui Liang, Xiaodong Zhang, Lishi Yan, Hanping Mao
Keywords: Biochar catalyst, LDPE, Lignin co-pyrolysis/pyrolysis, Reaction kinetics, Thermal decomposition.
Abstract. The effects of low-density polyethylene (LDPE) and a zinc-modified biochar catalyst on lignin pyrolysis were analyzed by thermogravimetric analysis (TGA). Thermal decomposition analysis disclosed that lignin and LDPE co-pyrolysis was more complicated than pyrolysis of lignin alone, addition of the catalyst caused a decrease in reaction temperature and a slight increase in the conversion rate, and most of the compounds decomposed at 260°C for lignin alone and at about 450°C for the lignin/LDPE blend. The synergistic effect between lignin and LDPE in co-pyrolysis with the catalyst was also analyzed. The kinetic parameters indicated that lignin pyrolysis was a third-order reaction, while lignin/LDPE co-pyrolysis was a second-order reaction. Addition of LDPE to lignin during pyrolysis lowered the activation energy from 49.10 to 30.26 kJ mol-1. Analysis of the reaction kinetics revealed that the reaction rate improved with addition of the catalyst.
(Download PDF) (Export to EndNotes)