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| Optimization of Fenton Oxidation Pretreatment of Poplar by Response Surface Methodology |
| Received:May 13, 2019 |
| DOI：10.11981/j.issn.1000-6842.2020.03.27 |
| Key Words:poplar;response surface;Fenton oxidation pretreatment;yield of glucose |
| Fund Project:国家自然科学基金（31500496）；2018年大学生创新创业湖北工业大学省级项目(201810500051)。 |
| Author Name | Affiliation | Postcode | | LEI Shanshan* | School of Material and Chemical Engineering， Hubei University of Technology， Wuhan， Hubei Province， 430068 | 430068 | | SHI Yan | School of Material and Chemical Engineering， Hubei University of Technology， Wuhan， Hubei Province， 430068 | 430068 | | ZHI Yamei | School of Material and Chemical Engineering， Hubei University of Technology， Wuhan， Hubei Province， 430068 | 430068 | | YIN Hao | School of Material and Chemical Engineering， Hubei University of Technology， Wuhan， Hubei Province， 430068 | 430068 | | YAO Lan | School of Material and Chemical Engineering， Hubei University of Technology， Wuhan， Hubei Province， 430068 | 430068 |
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| Abstract: |
| In this study， on the basis of single factor experiment and response surface method， the optimum conditions for Fenton oxidation pretreatment of poplar for bioethanol production were obtained： H2O2/FeCl3=10%， pH value 2.5， FeCl3 concentration 50 mmol/L， and the yield of glucose under these conditions was 51.4%. Analysis by response surface showed that FeCl3 concentration had the most significant effect on the yield of glucose， H2O2/FeCl3 had the most significant effect on delignification ratio. Component analysis of pretreated poplar indicated that lignin was removed partly during Fenton oxidation pretreatment. But there was no correlation between lignin removal and cellulose conversion. Furthermore， the cellulose crystallinity and specific surface area of pretreated poplar were increased by 12.8% and 80.2%， respectively， compared with the control. The increased specific surface area is beneficial to the enzymatic degradation of cellulose， which is one of the mechanisms of improving enzymatic degradation of poplar with the help of Fenton oxidation pretreatment. |
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