College of Agriculture, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India.
College of Basic Science and Humanities, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India.
Bioresour Technol. 2023 Jan;367:128231. doi: 10.1016/j.biortech.2022.128231. Epub 2022 Nov 1.
Several biochemical and thermochemical routes including pyrolysis, liquefaction, combustion and gasification are used to convert biomass to several bioproducts and green fuels. The current investigation included two important biomass namely, little millet stem (LMS) and sunflower stem (SS), whose potentiality as useful feedstocks is largely unexplored. The presence of considerable level of cellulose accumulation (approx. 30 %), volatiles (approx. 67 %) and high heating value (approx. 14 MJ/kg) in both the biomass, inferred their potentiality to be used as feedstocks in the pyrolysis process. The estimate of activation energy for LMS was reported as 191.14 kJ/mol (FWO), 191.46 kJ/mol (KAS) whereas for SS, the activation energy was estimated as 166.52 kJ/mol (FWO) and 162.68 kJ/mol (KAS). The difference between change in enthalpy and activation energy was small (5 to 6 kJ/mol) for both the biomasses, indicating the feasibility of combustion process. From Z(α) analyses, the experimental curve was seen passing through different theoretical curves, indicating complex nature of pyrolysis process for both the biomass.
包括热解、液化、燃烧和气化在内的几种生化和热化学途径被用于将生物质转化为几种生物制品和绿色燃料。目前的研究包括两种重要的生物质，即小米秸秆（LMS）和向日葵秸秆（SS），它们作为有用的原料的潜力在很大程度上尚未得到探索。这两种生物质中都存在相当高水平的纤维素积累（约 30%）、挥发物（约 67%）和高热值（约 14 MJ/kg），这表明它们有可能作为热解过程中的原料。LMS 的活化能估计值分别为 191.14 kJ/mol（FWO）和 191.46 kJ/mol（KAS），而对于 SS，活化能估计值分别为 166.52 kJ/mol（FWO）和 162.68 kJ/mol（KAS）。两种生物质的焓变和活化能之间的差异很小（5 到 6 kJ/mol），表明燃烧过程是可行的。从 Z(α)分析来看，实验曲线通过了不同的理论曲线，表明这两种生物质的热解过程具有复杂的性质。
