School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, PR China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
Bioresour Technol. 2020 Aug;310:123475. doi: 10.1016/j.biortech.2020.123475. Epub 2020 May 5.
The solid waste from papermaking factory, lime mud (LM), was previously demonstrated as an effective catalyst in biomass pyrolysis. Since understanding the kinetics and thermodynamics is the critical step for pyrolysis development, thereby the effect of LM on the kinetics and thermodynamics for biomass pyrolysis was systematically investigated in this study. More specifically, two representative biomasses, herbaceous corncob and woody aspen sawdust, were blended with LM at different mass ratio of 0:0, 0.5:1, 1:1, and 2:1. Based on this, pyrolysis was conducted through thermogravimetry under nitrogen atmosphere. The kinetic parameters of activation energy and pre-exponential factor were calculated by iso-conventional method. While the Avrami theory was used to determine the reaction order. Thermodynamic parameters were also calculated and compared with those of non-catalytic pyrolysis.
造纸厂的固体废物，石灰泥（LM），以前被证明是生物质热解的有效催化剂。由于了解动力学和热力学是热解开发的关键步骤，因此本研究系统地研究了 LM 对生物质热解动力学和热力学的影响。更具体地说，两种代表性的生物质，草本玉米芯和木本白杨木屑，与 LM 以 0:0、0.5:1、1:1 和 2:1 的不同质量比混合。在此基础上，通过在氮气气氛下的热重分析进行热解。通过等常规法计算了活化能和指前因子的动力学参数。而阿弗拉米理论用于确定反应级数。还计算了热力学参数，并与非催化热解的热力学参数进行了比较。
