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Zirconium based Metal-organic framework in-situ assisted hydrothermal pretreatment and enzymatic hydrolysis of Platanus X acerifolia exfoliating bark for bioethanol production

Metal-organic framework (MOF) assisted hydrothermal pretreatment and co-catalysis strategy based on UiO-66 MOF is developed for the first time. The Planetree exfoliating bark was pretreated with or without UiO-66 assisted hydrothermal method at a temperature ranging from 160-240 oC for 1-3 hours residence. With the rise of pretreatment severity, the total reducing sugar (TRS) was increased till reached maximum, 180 mg g-1, in the presence of UiO-66. The fitting models validate the optimal hydrothermal condition was at 180 oC and 1 h, which was characterized with high TRS and very low yield of furfural and HMF. The TRS from enzymatic hydrolysis reaches maximum, 391 mg g-1, in the presence of MOF co-catalysis and the maximum ethanol yield achieved was 73%. Altered morphology, higher surface area and porosity are noticed after MOF assisted hydrothermal pretreatment. This study insights the MOFs application in lignocellulose biomass processing.

» Author: Ibrahim Nasser Ahmed, Xiu-Li Yang, Amare Aregahegn Dubale, Rong Shao, Rong- Feng Guan, Xiangming Meng, Ming-Hua Xie

» Reference: 10.1016/j.biortech.2019.02.041

» Publication Date: 08/02/2019

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [310187].