Recent progress in the production of hydrogen-rich syngas via supercritical water gasification of microalgae
Microalgae has the advantages of short growth cycle and high photosynthetic carbon fixation efficiency,which is mainly comprised of three carbon-containing compounds(namely carbohydrates,proteins and lipids).Microalgae is a renewable biomass resource with great potential for energy production.Supercritical water gasification technology can directly convert wet microalgae(with high moisture content)into hydrogen-rich syngas without the drying of microalgae.It can avoid massive energy consumption in microalgae dehydration and has the advantages of high reaction rate and high conversion efficiency.In recent years,supercritical water gasification of microalgae has received extensive attention from domestic and foreign researchers.This study aims to provide a comprehensive review of the recent advances in hydrogen production from microalgae supercritical water gasification.The main influence factors during microalgae supercritical water gasification process are discussed in detail,including reaction temperature,pressure,residence time,microalgae/water blending ratio and reactors.The influence mechanism of different catalysts on the supercritical water gasification process of microalgae is elucidated,and the reaction mechanism of the main model compounds of microalgae in the supercritical water gasification process is also discussed.The kinetic and thermodynamic characteristics of the microalgae supercritical water gasification process are summarized.Finally,the future research direction of microalgae supercritical water gasification for hydrogen-rich syngas production is proposed,which is expected to provide theoretical guidance for the fundamental research and practical application of microalgae supercritical water gasification technology.
microalgaesupercritical water gasificationhydrogen productioninfluence factorcatalystreaction mechanism
万方数据
维普
