Application of Organosolv Pretreatment on Pennisetum Purpureum for Lignin Removal and Cellulose Recovery

Proceedings of the 2017 4th International Conference on Biomedical and Bioinformatics Engineering Pub Date : 2017-11-12 DOI:10.1145/3168776.3168781

Danny Chin Wei-Kit, Steven Lim, Pang Yean-Ling, Wong Kam-Huei

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引用次数: 3

Abstract

Pennisetum Purpureum or Napier Grass, a native to African grass happened to be one of the most promising candidates for bioethanol production. However, literature studies on the organosolv pretreatment process for P. Purpureum were relatively rare. Therefore, in this research, organosolv pretreatment on P. Purpureum was studied and compared with different types of solvent (1-pentanol and ethylene glycol) and homogeneous catalysts (sodium hydroxide and sulfuric acid) in order to provide the feasibility study and filling the current research gap. The chemical composition of P. Purpureum was found to comprise of 21.50% lignin, 54.67% alpha cellulose and 23.83% of beta cellulose and hemicellulose. The substantial composition of cellulose and hemicellulose in P. Purpureum proved its promising potential as a raw material for bioethanol production. Ethylene glycol with concentration of 50.0 v/v% with addition of 2.0 v/v% of sodium hydroxide had proven to be the most effective organosolv pretreatment combination in removal of lignin (83.4%). In terms of lignocellulosic component recovery, this pretreatment solvent achieved up to 70.10% alpha cellulose recovery and 97.90% beta cellulose and hemicellulose recovery.

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有机溶剂预处理紫荆草脱除木质素和回收纤维素的应用

狼尾草(Pennisetum Purpureum)，一种原产于非洲的草，恰好是最有希望用于生物乙醇生产的候选植物之一。然而，关于紫荆草有机溶剂预处理工艺的文献研究相对较少。因此，本研究对紫荆草进行有机溶剂预处理，并与不同类型的溶剂(1-戊醇和乙二醇)和均相催化剂(氢氧化钠和硫酸)进行比较，为紫荆草的有机溶剂预处理提供可行性研究，填补目前的研究空白。紫檀的化学成分为木质素的21.50%，α纤维素的54.67%，β纤维素和半纤维素的23.83%。紫荆中纤维素和半纤维素的丰富成分证明了其作为生物乙醇生产原料的巨大潜力。以浓度为50.0 v/v%的乙二醇加2.0 v/v%的氢氧化钠为有机溶剂预处理组合，对木质素的去除率为83.4%。在木质纤维素组分的回收率方面，该预处理溶剂的α -纤维素回收率可达70.10%，β -纤维素和半纤维素回收率可达97.90%。

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Proceedings of the 2017 4th International Conference on Biomedical and Bioinformatics Engineering

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