NaOH与H2O2综合预处理水稻秸秆及其厌氧发酵产沼气效果研究  

EFFECT OF NaOH AND H2O2 INTEGRATED PRETREATMENT OF RICE STRAW ON ITS ANAEROBIC FERMENTATION

作　　者：马瑞洁 覃国栋 李坤 崔少峰 武丽娟[1] 刘荣厚[1] Ma Ruijie;Qin Guodong;Li Kun;Cui Shaofeng;Wu Lijuan;Liu Ronghou(Biomass Energy Engineering Research Centre,School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学农业与生物学院生物质能工程研究中心,上海200240

出　　处：《太阳能学报》2020年第6期136-142,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51376121)。

摘　　要：为实现沼气工程中农作物秸秆的有效利用、解决沼气工程对畜禽养殖厂过度依赖的问题提供有效途径,以水稻秸秆作为厌氧发酵原料,采用NaOH和H2O2方法对水稻秸秆进行预处理。采用自制的批次厌氧发酵装置进行沼气厌氧发酵试验,探讨不同浓度的NaOH、H2O2及预处理时间对水稻秸秆沼气发酵的影响。采用响应面优化方法对预处理工艺条件进行优化,得到最优预处理条件为:NaOH浓度5.71%,H2O2浓度1.48%,处理时间12 h。验证实验中甲烷含量最高可达61.2%,沼气产量为15866 mL,与预测值16061 mL的相对误差为1.21%,小于5%,由验证实验可知模型是有效的。In order to realize the efficient utilization of crop stalks in biogas projects and to solve the problem of the biogas projects over-reliance on livestock and poultry breeding plants.Rice straw being used as anaerobic fermentation feedstock was pretreated by NaOH and H2O2,and the biogas anaerobic fermentation experiments with an anaerobic fermentation facility made in our laboratory were carried out.In this study,effects of different concentrations of NaOH,H2O2 and pretreatment time on biogas fermentation of rice straw are analyzed.Response surface method is used to optimize the pretreatment process conditions.And the optimum pretreatment conditions are as follows:NaOH concentration is 5.71%;H2O2 concentration is 1.48%;pretreatment time is 12 h.In the validation experiment,methane content reaches to 61.2%.Biogas yield is 15866 mL in which the relative error with the predicted value of 16061 mL is 1.21%,which is less than 5%.The results of the validation test indicate that the model is valid.The pretreatment conditions in this work can provide a scientific reference for rice straw anaerobic digestion technology.

关 键 词：秸秆 响应面实验 厌氧发酵 沼气 预处理 

分 类 号：X713[环境科学与工程—环境工程]