Conversion of algal biomass into energy products via gasification has attracted increasing research interests. A basic understanding of the gasification kinetics of algal biomass is of fundamental importance. Distributed activation energy model (DAEM), which provides the information of energy barrier distribution during the gasification process, is a promising tool to study the kinetic process of algae gasification. In this study, DAEM model was used to investigate Chlorella vulgaris and Spirulina gasification. The activation energy of Chlorella vulgaris gasification was in the range from 370 to 650 kJ mol⁻¹. The range of activation energy for Spirulina gasification was a bit wider, spanning from 330 to 670 kJ mol⁻¹. The distribution of activation energy for both Chlorella vulgaris and Spirulina showed that 500 kJ mol⁻¹ had the most components, and these components were gasified at around 300 °C. The DAEM algorithm was validated by the conversion and conversion rate from experimental measurement, demonstrating that DAEM is accurate to describe the kinetics of algal biomass gasification.

中文翻译：

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藻类气化动力学的分布式活化能模型

通过气化将藻类生物质转化为能源产品吸引了越来越多的研究兴趣。对藻类生物质气化动力学的基本理解至关重要。分布式活化能模型（DAEM）提供了气化过程中的能垒分布信息，是研究藻类气化动力学过程的有前途的工具。在这项研究中，DAEM模型用于研究小球藻和螺旋藻的气化。小球藻气化的活化能为370至650 kJ mol ^-1。螺旋藻的活化能范围气化范围更宽，从330到670 kJ mol ^-1。小球藻和螺旋藻的活化能分布表明，500 kJ mol ^-1的组分最多，这些组分在300°C左右被气化。DAEM算法通过实验测量的转化率和转化率得到验证，证明DAEM可以准确描述藻类生物质气化的动力学。