Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Production of Hemicellulose Sugars Combined with the Alkaline Extraction Lignin Increased the Hydro-Depolymerization of Cellulose from Corn Cob
Hydro-depolymerization is a novel method for converting agricultural waste into eco-friendly and promising products. Due to the complex structure and composition of corn cob (CC), a three-step process was developed, which involved pre-hydro-depolymerization of hemicellulose, alkaline extraction of lignin, and hydro-depolymerization of cellulose. The pre-hydro-depolymerization step was at first optimized to produce five-carbon and six-carbon sugars, achieving a maximum hemicellulose conversion rate of 78.48 ± 3.92%, and reducing a sugar yield of 59.12 ± 2.95%. Alkaline treatment achieved a maximum lignin extraction efficiency of 73.76 ± 3.68%. After hemicellulose removal and delignification, the cellulose conversion rate increased to 36.63% and further increased to 76.97% after five cycles. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were performed to confirm physical and chemical changes in CC residues. The integrated process of hydro-depolymerization and alkaline treatment enables the complete exploitation of cellulose, hemicellulose, and lignin, and thus holds great potential for application in the agriculture industry.
Production of Hemicellulose Sugars Combined with the Alkaline Extraction Lignin Increased the Hydro-Depolymerization of Cellulose from Corn Cob
Hydro-depolymerization is a novel method for converting agricultural waste into eco-friendly and promising products. Due to the complex structure and composition of corn cob (CC), a three-step process was developed, which involved pre-hydro-depolymerization of hemicellulose, alkaline extraction of lignin, and hydro-depolymerization of cellulose. The pre-hydro-depolymerization step was at first optimized to produce five-carbon and six-carbon sugars, achieving a maximum hemicellulose conversion rate of 78.48 ± 3.92%, and reducing a sugar yield of 59.12 ± 2.95%. Alkaline treatment achieved a maximum lignin extraction efficiency of 73.76 ± 3.68%. After hemicellulose removal and delignification, the cellulose conversion rate increased to 36.63% and further increased to 76.97% after five cycles. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were performed to confirm physical and chemical changes in CC residues. The integrated process of hydro-depolymerization and alkaline treatment enables the complete exploitation of cellulose, hemicellulose, and lignin, and thus holds great potential for application in the agriculture industry.
Production of Hemicellulose Sugars Combined with the Alkaline Extraction Lignin Increased the Hydro-Depolymerization of Cellulose from Corn Cob
Xiaorui Yang (Autor:in) / Xiaotong Li (Autor:in) / Liyan Zhu (Autor:in) / Jinhua Liang (Autor:in) / Jianliang Zhu (Autor:in)
2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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A kinetic study of the acetylation of cellulose, hemicellulose and lignin components in wood
| British Library Online Contents | 1997
| British Library Online Contents | 2018
| British Library Online Contents | 2018