Effects of urea ammonia pretreatment on the batch anaerobic fermentation efficiency of corn stovers  

作　　者：Qiang Li Fuli Yang Guoxiang Zheng Zhengjun Guan 

机构地区：[1]College of Engineering,Northeast Agricultural University,Harbin 150030,China [2]College of Engineering and Technology,Southwest University,Chongqing 400715,China

出　　处：《International Journal of Agricultural and Biological Engineering》2019年第4期169-173,共5页国际农业与生物工程学报（英文）

基　　金：This study was supported by a grant from the Southwest University Talent Introduction Project(SWU118104).

摘　　要：In order to enhance the biogas production and provide nitrogen sources for the growth of microorganisms,experiments on urea ammonia pretreatment of corn stovers were implemented at(35±1)°C to investigate the effects of urea ammonia pretreatment on the batch anaerobic fermentation efficiency of corn stovers.This study assessed the effects of urea ammonia contents(2%,4%,and 6%)and moisture contents(30%,50%,70%and 90%)on the physical structures of lignocelluloses and the efficiency of biogas production from anaerobic fermentation of corn stovers.The results indicated that the methane production reached 230.31 mL/g VS(volatile solids)at pretreatment with 4%urea ammonia and 70%moisture contents for the batch anaerobic fermentation,which was 26.6%higher than that of the untreated group.The degradation rates of cellulose and hemicellulose were 66.34%and 75.47%after the anaerobic fermentation,respectively,which were about 22.6%and 20.9%higher than that of the untreated group,respectively.Thus,it was concluded that urea ammonia pretreatment can improve the efficiency of biogas production from anaerobic fermentation of corn stovers.

关 键 词：corn stovers urea ammonia pretreatment batch anaerobic fermentation methane production DEGRADATION 

分 类 号：F42[经济管理—产业经济]