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第五届全球智能控制与自动化大会会议

作者： Haisheng Li Xuefeng ZhuCollege of Automation Science and Engineering South China University of Technology Guangzhou 510640 China College of Chemical Engineering Xiangtan University Xiangtan 411105 China

＜正＞ The predicting kappa number of kraft pulping process is very difficult due to the complicated process kinetics and poor basic information. The Support Vector Machine （SVM）, as a novel type of learning machine based on statistical learning theory was introduced. The basic theory and algorithm of the method were presented and application of the method to predict kappa number was conducted. In the meantime, the comparison was made between SVM methods and the traditional methods （Linear Regression and Artificial Neural Network）. The comparative result indicated that SVM method was high in precision, faster in computation and had a better generalization ability.

关键词： support vector machine kappa number predict

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Sulfite-Formaldehyde Pulping and Oxygen Delignification of Wheat Straw

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Paper And Biomaterials 2017年第3期2卷 12-17页

作者： WenJuan Wu Yu Zhang Bo Jiang YongCan Jin Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry University State Key Laboratory of Pulp and Paper Engineering South China University of Technology

In this study,wheat straw pulp was prepared by sulfiteformaldehyde(SF) pulping combined with oxygen delignification to develop a sustainable methodology for chemical pulping of straw *** bleachability of oxygen-delignified SF pulp was also evaluated by hypochlorite *** results indicated that the Na_2SO_3 charge played an important role in lignin removal during SF pulping as well as oxygen *** efficiency of oxygen delignification of wheat straw SF pulp was markedly *** the oxygenation stage,the kappa number decreased by over 50%(the original kappa number of SF pulp was lower than 30) when the Na OH charge was in the range of 3%~5%.The optimal conditions for preparing bleached pulp via combined SF pulping and oxygen delignification involved the use of 12% of Na_2SO_3 and 3% of Na OH,*** with relatively high brightness,a low kappa number,as well as an acceptable viscosity could be obtained when oxygen-delignified SF pulp was bleached with hypochlorite under a low active chlorine dosage.

关键词： sulfite-formaldehyde pulping oxygen delignification kappa number wheat straw

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Influence of lignin content on enzymatic saccharification of poplar wood chips by different pretreatment methods

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Journal of Bioresources and Bioproducts 2018年第3期3卷 96-100页

作者： Zhihao Wang Min Zhang Saisai Li Yue Zhang Qiang Wang Shanshan Liu Key Lab of Paper Science and Technology of Ministry of Education Qilu University of TechnologyJinanShandong Province250353China

Bioconversion of lignocellulose to fermentable sugars is a promising approach to produce potential bio-based energy and *** is the key step to remove or delocalize lignin in lignocellulose,thus improving enzymatic saccharification *** this study,three kinds of pretreatment methods(ethanol,bisulfite and sulfate)were employed to produce substrates with various lignin contents which were subsequently subjected to biological saccharification *** showed that a lower lignin content led to a higher fermentable sugar yield based on reducing sugar release for all ***,the sulfate pretreatment improved the enzymatic saccharification efficiency in a greater extent than the *** transform infrared(FTIR)spectroscopy confirmed the structure changes during pretreatment.

关键词： Poplar wood chip Pretreatment kappa number Enzymatic Saccharification

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