文献类型： 会议论文
第一作者： Antonella Dimotta
作者： Antonella Dimotta 1 ; Cesare Freda 2 ;
作者机构： 1.Earth- and Eco-Systems Expertise for Environmental Modelling and Restoration Company - EESEEMR, Synergy Centre ITT Dublin, TU Dublin-Tallaght Campus, Dublin 24, Dublin 24 A386, Ireland
2.Laboratory of Thermochemical Processes for Waste and Biomass Valorization National, ENEA Research Centre, SS Jonica 106 km 419+500, 75026 Rotondella, Trisaia (MT), Italy
关键词： Pyrolysis;Digestate;CO_2 Sorption;Gas
会议名称： International Conference on Computational Science and Its Applications
主办单位：
页码： 150-161
摘要： To date the management of digestate is a crucial task for anaerobic digestion process. In the present work a strategy for digestate management is thermodynamically analyzed by a commercial software for process simulation called CHEMCAD. Pyrolysis of digestate is simulated by a minimization of the free Gibbs energy. The sequestration of the carbon dioxide (CO_2) released by the pyrolysis is investigated by the addition of calcium oxide, in order to reduce CO_2 emissions. The effect of the pyrolysis temperature between 400-900 ℃ and of the CaO/digestate mass ratio between 0-0.5 was discussed, as well. The CHEMCAD application allowed to investigate the chemisorption behaviour by focusing on the temperature-dependent CO_2 sorption trends in relation to different values of the CaO mass ratio. Temperature below 650 ℃ should be considered for CO_2 sorption by CaO. CO_2 molar fraction below 10% was obtained for temperature below 450 ℃ and CaO/digestate mass ratio higher than 0.4.
分类号： tp3
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