摘要
The effects of acid hydrolysis pretreatment of corn cob on saccharification efficiency and fermentation bio-hydrogen production were investigated by orthogonal test design.The hydrolysis pretreatment of corn cob with dilute sulfuric acid was essential for adequately converting substrate into soluble saccharides and bio-hydrogen.The experimental results showed that acid hydrolysis pretreatment of corn cob was found most effective at hydrolysis temperature of 115℃,sulfuric acid concentration of 1.0%,hydrolysis time of 1.5 h and solid-liquid mass ratio 1∶10,in which both maximum saccharification efficiency of 0.5433 g·(g TVS)-1 and bio-hydrogen yield of 85.8 ml H2·(g TVS)-1 were observed.In addition,the mechanisms of degrading corn cob by acid hydrolysis and hydrogen fermentation were also discussed by means of X-ray diffraction(XRD)analysis and crystallinity calculation.
The effects of acid hydrolysis pretreatment of corn cob on saccharification efficiency and fermentation bio-hydrogen production were investigated by orthogonal test design. The hydrolysis pretreatment of corn cob with dilute sulfuric acid was essential for adequately converting substrate into soluble saccharides and bio-hydrogen. The experimental results showed that acid hydrolysis pretreatment of corn cob was found most effective at hydrolysis temperature of 115℃, sulfuric acid concentration of 1.0%, hydrolysis time of 1.5 h and solid-liquid mass ratio 1 ： 10, in which both maximum saccharification efficiency of 0. 5433 g· （g TVS）^-1 and bio-hydrogen yield of 85.8 ml H2 · （g TVS）^-1 were observed. In addition, the mechanisms of degrading corn cob by acid hydrolysis and hydrogen fermentation were also discussed by means of X-ray diffraction （XRD） analysis and crystallinity calculation.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2009年第2期465-470,共6页
CIESC Journal
基金
国家自然科学基金项目(90610001
20871106)
国家重点基础研究发展计划项目(2009CB220005
2006CB708407)
高等学校博士学科点专项科研基金项目(20070459007)
教育部郑州大学211工程资助课题~~
关键词
玉米芯
酸水解
发酵
生物产氢
corn cob
acid hydrolysis pretreatment
anaerobic fermentation
bio hydrogen
