西北林学院学报2018，Vol.33Issue(3)：198-202,253,6.DOI:10.3969/j.issn.1001-7461.2018.03.30
生物质废弃物合成水玻璃的工艺模型研究
Synthetic Process Model of Water Glass for Biomass Waste
摘要
Abstract
China,as a large agricultural country,produces a large number of straw wastes every year with abundant grain output.If we make full use of these straw waste resources and turn these straw wastes into treasures,it will increase the added value of biomass waste resources.In this study,rice straw was used to prepare biomass based silica by acid hydrolysis and pyrolysis methods.Biomass based water glass was prepared by biomass based silica mixed with NaOH.X ray fluorescence spectrometer (XRF) analysis was used to analyze mass fraction silica.The dissolution rate of silica was calculated.Effects of reaction temperature,time and concentration of sodium hydroxide on the dissolved silica and silica dissolution rate were explored by Box-behnken design.A quadratic regression polynomial model was built taking silica dissolution rate as a response value.The results indicated that the dissolution rate of SiO2 increased with the increase of reaction time,reaction temperature and concentration of NaOH solution.The interaction between reaction temperature and reaction time on SiO2 dissolution rate was significant.Reaction time and reaction temperature had secondary influence on SiO2 dissolution rate.From the RSM prediction,the better reaction time was 4.9 h,the better reaction temperature was 96.02℃,and the NaOH concentration was 4 mol · L-1.Under this technological condition,the dissolution rate of SiO2 was 84.54 ％.关键词
稻秸秆/二氧化硅/水玻璃/Box-BehnkenKey words
rice straw/silica/silicon dioxide/Box-Behnken分类
农业科技引用本文复制引用
杨蕊,李家馨,周定国,张洋,兰平,冒海燕..生物质废弃物合成水玻璃的工艺模型研究[J].西北林学院学报,2018,33(3):198-202,253,6.基金项目
国家自然科学基金青年基金(31500483) （31500483）
江苏省自然科学基金青年基金(BK20150876). （BK20150876）
