| 摘要: |
| 试验设计了一种能够对多个样品同时进行厌氧发酵的简易装置,为评估试验装置性能,以ND608、ND627、ND691、先玉335、高油5580和大刍草的秸秆为原料进行批量厌氧发酵试验。结果表明: 1)本试验装置容易获得厌氧环境,37 ℃恒温条件下,厌氧反应的启动较快,装样10 h后,有明显的气泡产生。反应40 d后,厌氧发酵反应终止。2)CH4体积分数为64.09% ~65.55%,CO2体积分数为28.80% ~ 31.60%;其中大刍草(291.05 mL/g)和高油5580(281.67 mL/g)的CH4单位产气量较高。由此可见:本试验设计的发酵装置能够满足目前厌氧发酵反应的要求,符合对多个玉米秸秆样品同时评估的要求。 |
| 关键词: 沼气 厌氧发酵 装置 秸秆 能源玉米 |
| DOI：10.11841/j.issn.1007-4333.2012.06.032 |
| 投稿时间：2012-06-27 |
| 基金项目:现代农业产业体系-玉米(CARS-02-09) |
|
| An anaerobic digestion apparatus and its performance analysis |
|
LENG Guo-hui1, ZHANG Shuai-song1,2, CHEN Shao-jiang1,2,3
|
| (1.National Maize Improvement Center,China Agricultural University,Beijing 100193,China;2.Biomass Engineering Center,China Agricultural University,Beijing 100193,China;3.National Energy R&D Center for Non-food Biomass,China Agricultural University,Beijing 100193,China) |
| Abstract: |
| An experimental apparatus for anaerobic digestion was designed for simultaneous evaluation of multiple samples.In order to evaluate the performance of the apparatus,the maize stalk samples of ND608,ND627,ND691,XY335,high oil hybrid ND5580 and Teosinte were employed for biogas production.The results indicated that anaerobic atomsphere in the apparatus can be maintained.At 37 ℃,anaerobic digestion started after 10 h of sample loading and bubbles generated which could be considered as initiate biogas production.The reaction time could continuously last for about 40 days.The volumetric content of produced methane was ranged from 64.09% to 65.55% among six samples.The average content of CO2 was ranged from 28.80% to 31.60%.The methane yields of Teosinte and high oil hybrid ND5580 were higher than normal maize (ND608,ND627,ND691,XY335).The newly designed apparatus could be used for the evaluation of biogas production performance for large number of samples. |
| Key words: biogas anaerobic digesion apparatus stalk energy maize |
