BIAN Dao-lin,SUN Lei,WANG Shuang,et al.Study on Characters of Acid Production with Multi-Substrate Co-Fermentation[J].HEILONGJIANG AGRICULTURAL SCIENCES,2014,(09):28-31.
多底物共发酵产酸特性研究
- Title:
- Study on Characters of Acid Production with Multi-Substrate Co-Fermentation
- 文章编号:
- 1002-2767（2014）09-0028-04
- Keywords:
- multi-substrate; co-fermentation; acid production
- 分类号:
- X172
- 文献标志码:
- A
- 摘要:
- 为探讨多种底物共发酵是否有利于定向产酸发酵，以牛粪、水稻秸秆、糖蜜废水为底物，分析了产酸相中不同时期pH、ORP、挥发性脂肪酸及秸秆纤维素含量的变化。结果表明：在反应器初期30 d时，产酸菌群活性增长期，大量挥发性脂肪酸的产生使得pH迅速下降。反应后期60 d，pH缓慢上升，为6.2~6.5，ORP值为－250~－400 mV，满足产酸菌的生长条件。共发酵具有很强的碳源氮源互相补充的能力，有利于发酵的进行。反应120 d时，水稻秸秆中纤维素得到有效降解。
- Abstract:
- In order to explore multi-substrate co-fermentation whether be conducive to acidogenic fermentation,taking cow dung,rice straw and molasses wastewater as substrate,the change of pH,ORP,volatile organic acid and cellulose content in straw during different period in acidogenic-phase were analyzed.The results showed that：in the first 30 days，the activity of acid-producing bacteria increased fast,production of volatile organic acid lead to pH decrease.In the later 60 days，pH rose slowly and ranged from 6.2 to 6.5，ORP varied from －250 to －400 mV，which met growth conditions of acid-producing bacteria.Co-fermentation had a strong ability to supplement carbon source and nitrogen source and was conducive to ferment.When ferment for 120 days，cellulose in straw degraded effectively.
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备注/Memo
收稿日期：2014-06-03
基金项目： “十二五”科技支撑计划资助项目（2013BAD07B01）；黑龙江省科技特派员农村创新创业资助项目（GC12B711）;黑龙江省博士后基金资助项目
第一作者简介：边道林(1978-)，男，山东省郓城县人，硕士，助理研究员，从事科研管理和农业资源环境研究。E-mail:330834043qq.com。