The Impact of a Mild Sub-Critical Hydrothermal Carbonization Pretreatment on Umbila Wood. A Mass and Energy Balance Perspective

Energies

Carlos Alberto Cuvilas¹  Efthymios Kantarelis²  Weihong Yang² 

[1] Department of Chemical Engineering, Faculty of Engineering, UEM—University Eduardo Mondlane, Av. de Moçambique Km 1.5, P.O. Box 257, Maputo 1100, Mozambique;Division of Energy and Furnace Technology, Department of Materials Science and Engineering, KTH-Royal Institute of Technology, Brinellvägen 23, S-100 44 Stockholm, Sweden; E-Mails:

关键词: hydrothermal carbonisation;    pre-treatment;    biomass;    solid bio fuels;   

DOI  :  10.3390/en8032165

来源: mdpi

【 摘 要 】

Over the last years, the pretreatment of biomass as a source of energy has become one of the most important steps of biomass conversion. In this work the effect of a mild subcritical hydrothermal carbonization of a tropical woody biomass was studied. Results indicate considerable change in carbon content from 52.78% to 65.1%, reduction of oxygen content from 41.14% to 28.72% and ash slagging and fouling potential. Even though decarboxylation, decarbonylation and dehydration reactions take place, dehydration is the one that prevails. The mass and energy balance was affected by the treatment conditions than the severity of the treatment.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.