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稀硫酸预处理三球悬铃木落叶糖化工艺研究

发表时间:2017-05-15  浏览量:1339  下载量:164
全部作者: 李亚猛,张志萍,朱胜楠,张甜,刘会亮,张全国
作者单位: 河南农业大学农业部可再生能源新材料与装备重点实验室;河南农业大学生物质能源河南省协同创新中心
摘 要: 采用稀硫酸对行道三球悬铃木(俗称法国梧桐)落叶的糖化工艺进行预处理研究,结合3,5-二硝基水杨酸(DNS)法测定水解液中的还原糖含量,考察水解温度、水解时间、稀硫酸浓度、固液比等因素对三球悬铃木落叶水解产物还原糖的影响,在单因素试验的基础上通过正交试验确定最优水解工艺条件:硫酸质量分数为2%、水解温度为130℃、固液比为1:20、水解时间为60 min、粉碎粒度为0.250~0.425 mm. 并对稀硫酸处理液进行循环再利用,对不同循环次数处理后的落叶进行光合生物制氢,以累积产氢量为依据,得出处理液可进行3次有效循环利用,对降低预处理成本有一定的意义。
关 键 词: 农业工程;稀硫酸预处理;三球悬铃木落叶;糖化;生物制氢
Title: Study on the saccharification pretreatment process of Platanus orientalis leaves by dilute sulfuric acid
Author: LI Yameng, ZHANG Zhiping, ZHU Shengnan, ZHANG Tian, LIU Huiliang, ZHANG Quanguo
Organization: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA, Henan Agricultural University; Collaborative Innovation Center of Biomass Energy of Henan Province, Henan Agricultural University
Abstract: Platanus orientalis was pretreated by the dilute sulfuric acid and reducing sugars in the hydrolysate were measured by the 3,5-dinitrosalicylic acid (DNS) method, including the hydrolyzing temperature, hydrolyzing time, concentration of the dilute sulfuric acid and the ratio of solid to liquid. On the basis of single factor experiment, the optimum pretreatment conditions were obtained by the orthogonal experiment. The optimum pretreatment conditions were 2% H2SO4, the hydrolyzing temperature of 130℃, the ratio of solid to liquid 1:20, hydrolyzing time 60 min, granularity 0.250-0.425 mm. And the dilute sulfuric acid treatment solution was recycled, cumulative hydrogen production was based on hydrogen production from the leaves treated with different cycle times. The results show that the treatment solution can be used for 3 times, which is significant to reduce the cost of pretreatment.
Key words: agricultural engineering; dilute sulfuric acid pretreatment; Platanus orientalis leaves; saccharification; bio-hydrogen production
发表期数: 2017年5月第9期
引用格式: 李亚猛,张志萍,朱胜楠,等. 稀硫酸预处理三球悬铃木落叶糖化工艺研究[J]. 中国科技论文在线精品论文,2017,10(9):996-1003.
 
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