Detoxification of hemicellulose-enriched hydrolysate from sugarcane bagasse by activated carbon and macroporous adsorption resin

• Published in: Biomass conversion and biorefinery Vol. 14; no. 13; pp. 14559 - 14574
• Main Authors: Preechakun, Thanchanok, Pongchaiphol, Suchat, Raita, Marisa, Champreda, Verawat, Laosiripojana, Navadol
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2024; Springer Nature B.V
• Subjects: Acetic acid; Acids; Activated carbon; Adsorption; Bagasse; Biotechnology; Byproducts; Energy; Formic acid; Hydrolysates; Hydrothermal pretreatment; Hydroxymethylfurfural; Lactic acid; Levulinic acid; Lignocellulose; Original Article; Renewable and Green Energy; Resins; Succinic acid; Sugar; Sugarcane; Hemicellulose; Hydrothermal process; Macroporous adsorption resin; Activated carbon; Detoxification; Sugarcane bagasse
• ISSN: 2190-6815; 2190-6823
• DOI: 10.1007/s13399-022-03596-6

Hemicellulose-derived sugars, especially xylose and xylooligosaccharide (XOS), obtained from lignocellulosic biomass can promote further applications in alternative chemical, food, and health care industries. In this study, a hemicellulose-rich hydrolysate was extracted by the hydrothermal pretreatment of sugarcane bagasse at 175 °C. The two-step combination process of activated carbon and macroporous adsorption resin demonstrated a high efficiency of removal in terms of total byproducts (hydroxymethylfurfural, furfural, lactic acid, formic acid, acetic acid, levulinic acid, and succinic acid) and phenolic content with 70.9% and 92.0%, respectively. This synergistic process achieved a higher purity of total sugar (89.7%) than the single detoxification processes with activated carbon and macroporous resin (83.6% and 84.3%, respectively). Moreover, detoxification by activated carbon achieved the removal of the total byproducts in the range of 47.1 to 63.9%, particularly the removal of hydroxymethylfurfural and furfural under the condition from 5 to 10% (w/v) activated carbon loading and temperature at 4–70 °C for 4 h. Using macroporous adsorption resin affected the removal of the total phenolic content in the range of 68.3 to 98.4% with high loss of XOS sugar under conditions from 2 to 20% (w/v) resin loading at 25 °C for 1 h. This work provides a simple process for the detoxification of hemicellulose-rich hydrolysates by adsorbent materials from hydrothermal sugarcane bagasse processing. Graphical Abstract