Hydrothermal Treatments Applied to Agro- and Forest-Industrial Waste to Produce High Added-Value Compounds

• Main Authors: María Evangelina Vallejos, Fernando Esteban Felissia, Maria Cristina Area
• Format: Article
• Language: English
• Published: North Carolina State University 2016-11-01
• Series: BioResources
• Subjects: Biorefinery; Agro- industrial wastes; Forest-industrial wastes; Sugarcane bagasse; Sawdust; Pine; Eucalyptus; Pre-treatment; Hemicelluloses; Liquid to solid ratio; Economics
• Online Access: http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_12_1_Review_Vallejos_Hydrothermal_Treatments_Agro_Forest_Industrial_Waste

Agro- and forest-industrial wastes are abundant and low cost sources of carbohydrates and phenolic compounds, which can be converted into biofuels, biomaterials, and high added-value compounds by different pathways in small and large biorefineries. The development of technologies based on hydrothermal treatments could improve the utilization of lignocellulosic wastes through the separation of its components (cellulose, hemicellulose, lignin, and extractives) in sequential processes. The adopted technologies for the separation and conversion of these lignocellulosic wastes into synthesis intermediates or products of high added value represent an important part of the total production cost. Low liquid to solid ratios and mild temperatures in the pre-treatment are interesting ways of reducing energy costs, subsequently economizing both steam and electricity. This work focuses on the advantages of using low liquid to solid ratios in the hydrothermal treatment of different agro- and forest-industrial wastes, paying particular attention to the performance of separation, purification, and conversion of hemicelluloses.