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Modeling and optimization of dilute nitric acid hydrolysis on corn stover

2010; Wiley; Volume: 86; Issue: 2 Linguagem: Inglês

10.1002/jctb.2529

1097-4660

Rui Zhang, Xuebin Lu, Youshan Sun, Xinying Wang, Shuting Zhang,

Microbial Metabolic Engineering and Bioproduction

Journal of Chemical Technology & BiotechnologyVolume 86, Issue 2 p. 306-314 Research Article Modeling and optimization of dilute nitric acid hydrolysis on corn stover Rui Zhang, Rui Zhang School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorXuebin Lu, Xuebin Lu School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorYoushan Sun, Youshan Sun School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorXinying Wang, Xinying Wang School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorShuting Zhang, Corresponding Author Shuting Zhang zhangst@tju.edu.cn School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSchool of Environmental Science and Technology, Tianjin University, Tianjin 300072, China.===Search for more papers by this author Rui Zhang, Rui Zhang School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorXuebin Lu, Xuebin Lu School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorYoushan Sun, Youshan Sun School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorXinying Wang, Xinying Wang School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSearch for more papers by this authorShuting Zhang, Corresponding Author Shuting Zhang zhangst@tju.edu.cn School of Environmental Science and Technology, Tianjin University, Tianjin 300072, ChinaSchool of Environmental Science and Technology, Tianjin University, Tianjin 300072, China.===Search for more papers by this author First published: 27 October 2010 https://doi.org/10.1002/jctb.2529Citations: 48Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract BACKGROUND: Because of its high cost, nitric acid has not been widely employed as the catalyst for hydrolysis of lignocellulosic biomass to obtain fermentable sugars. However, recently more and more research results have reported that nitric acid was more effective than other acids for the hydrolysis of lignocellulose. Therefore, it is necessary to find an optimum condition for nitric acid pretreatment and a means of reducing the cost. RESULTS: In this work, low concentrations of nitric acid and short reaction times were considered to optimize the pretreatment process. The kinetic parameters of models to predict the concentrations of xylose, glucose, arabinose, acetic acid and furfural in the hydrolysates were obtained. Applying the kinetic models, the optimum conditions were: 150 °C, 0.6% HNO3 and 1 min, which yielded a solution containing up to 22.01 g L−1 xylose, 1.91 g L−1 glucose, 2.90 g L−1 arabinose, 2.42 g L−1 acetic acid and 0.21 g L−1 furfural, which were consistent with the predicted values. The influence of temperature was also studied using the Arrhenius equation. CONCLUSIONS: A combination of experimental data and model analysis suggested that 96% xylose yield can be achieved by using low concentration nitric acid for a short reaction time, which could greatly reduce the pretreatment cost. Therefore, dilute nitric acid could be considered a good choice for the hydrolysis of corn stover. Copyright © 2010 Society of Chemical Industry Citing Literature Volume86, Issue2February 2011Pages 306-314 RelatedInformation