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| Effects of Low-acid Spraying Combined with Steam Explosion Pretreatment on Structure and Enzyme Hydrolysis of Wheat Straw |
| Received:September 16, 2022 |
| DOI：10.11981/j.issn.1000-6842.2022.04.16 |
| Key Words:wheat straw;sulfuric acid;spraying;steam explosion;enzyme hydrolysis |
| Fund Project:国家重点研发计划课题（No.2021YFC2101601）；国家自然科学基金面上项目（No.21978104）。 |
| Author Name | Affiliation | Postcode | | ZHONG Yu | State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 | 510640 | | LI You | State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 | 510640 | | WU Yue | State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 | 510640 | | LIN Qixuan | State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 | 510640 | | REN Junli | State Key Laboratory of Pulp and Paper Engineering， School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 | 510640 | | WANG Huan | Egozhuo New Energy Saving Technology （Shanghai） Co.， Ltd.， Shanghai， 201302 | 201302 | | DU Fengguang | Egozhuo New Energy Saving Technology （Shanghai） Co.， Ltd.， Shanghai， 201302 | 201302 |
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| Abstract: |
| Low-acid spraying combined with low-temperature steam explosion was used to pretreat wheat straw in this study. The effects of pretreatment conditions on components， structure， and enzymatic hydrolysis efficiency of wheat straw were investigated. The results showed that cellulose retention rate reached 91.3% with hemicellulose removal rate of 83.4% and sugar yield in hydrolysate of 80.1% when wheat straw was sprayed with 5% sulfuric acid （solid to liquid ratio 1∶1） at 170 ℃ （0.79 MPa） for 5 min. In addition， the enzymatic hydrolysis rate of glucose was 84.9% after 72 h of enzymatic hydrolysis. This study proposed a low-temperature steam explosion pretreatment method for wheat straw， which achieved high cellulose retention and outstanding enzymatic hydrolysis efficiency. |
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