检索结果-南通市图书馆

Improving biomethane yield by strengthening acidification of maize stover in two-phase anaerobic digestion

International Journal of Agricultural and Biological Engineering 2020年第4期13卷 226-231页

作者： Huan Tong Baoyu Zhou Chunmei Liu Akiber Chufo Wachemo Xiujin Li Xiaoyu Zuo Department of Environmental Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China China Shipbuilding New Power Co. Ltd.Beijing 100097China Beijing Sound Environmental Engineering Co. Ltd.Beijing 101102China Department of Water Supply and Environmental Engineering Arba Minch UniversityP.O.Box 21Arba MinchEthiopia

In this study,the acidification and two-phase anaerobic digestion(AD)were conducted in batch and continuous stirred tank reactors,respectively,to determine the effect of acidification on methane production in *** results showed that two-phase AD achieved an observable enhancement in the methane production under optimal acidification conditions(organic loading rate of 60 g TS/L,the ratio of raw material to inoculum(based on dry weight)of 2:1,the temperature of 45℃,urea concentration of 4%,and time of 6 d).Under these conditions,the daily biogas and biomethane productions were 0.48 L/g TS and 0.30 L/g TS,respectively,which were 26.32%and 57.89%higher than those of the untreated group,*** ammonia nitrogen(AN),alkalinity,and pH value of the methanogenic phase of C4 continued to increase up to 956 mg/L,5680 mg/L,and 7.41,respectively,after 60 d,which might have destroyed the stability of the ***,for the purpose of reusing the nitrogen source,reducing AN,and maintaining the stability of the reaction system,another set of acidification and two-phase AD with water pretreatment using the discharge of the methanogenic phase of C4 as the inoculum was subsequently *** results showed that the daily biogas productions of single-phase and two-phase AD were 5.26%and 15.79%higher than that of the untreated group,respectively;similarly,their daily methane yields were 10.42%and 21.05%higher than that of the untreated group.

关键词： alkaline pretreatment two-phase anaerobic digestion strengthening acidification maize stover reactor biogas biomethane production

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Experimental study on specific grinding energy and particle size distribution of maize grain,stover and cob

引用

International Journal of Agricultural and Biological Engineering 2020年第4期13卷 135-142页

作者： Jun Fu Zhao Xue Zhi Chen Luquan Ren Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130022China College of Biological and Agricultural Engineering Jilin UniversityChangchun 130022China Chinese Academy of Agricultural Mechanization Sciences Beijing 100083China

Reducing the particle size of biomass is of great significance for rational and efficient utilization of *** this study,maize grain,stover,and cob were comminuted at different speeds(2000-2800 r/min)by hammer mill with a mesh size of 2.8 *** mechanical energy for smashing three selected samples was obtained directly through the sensor and data testing *** results demonstrated that the maize cob had the highest total specific energy while the maize grain had the lowest(135.83-181.10 kW·h/t and 27.08-36.23 kW·h/t,respectively).In addition,for the same material,higher hammer mill speed generated more specific energy *** the effective specific energy of maize stover had a similar trend to the total specific ***,the effective specific grinding energy of maize cob and grain increased initially and then decreased with the increase of rotating *** fitting curves of the specific energy to mill speeds were determined,and the range of determination coefficients of the regression equation was *** size distribution curves were drawn by sieving the pulverized particles of the three samples based on a series of standard *** relevant parameters characterizing the particle size distribution were calculated according to the screening *** results demonstrated that larger rotational speed leads to smaller particle *** the size parameters,distribution parameters,and shape parameters,it was found that the distributions of the three samples all exhibit a distribution of“well-graded fine-skewed mesokurtic”.The Rosin-Rammler function was considered to be suitable for characterizing the particle size distribution of maize grain,stover,and cob particles with a coefficient of determination between 0.930 and 0.992.

关键词： maize grain maize stover maize cob specific energy particle size distribution comminution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：