蓝藻厌氧发酵产甲烷及含硫气体释放特征  

Methane production and sulfurous gas release characteristics during anaerobic fermentation in blue-green algae systems

作　　者：胡月[1] 曹静[1] 李玉成[1] 窦月芹[1] 王振中[1] 

机构地区：[1]安徽大学资源与环境工程学院,合肥230601

出　　处：《生物学杂志》2016年第6期78-81,共4页Journal of Biology

基　　金：安徽省教育厅重点科研项目(KJ2012A009);安徽大学大学生科研训练计划项目(kyx12013025)

摘　　要：蓝藻厌氧发酵产甲烷是蓝藻资源化利用的一种有效方式,但是碳氮比偏低、所产生沼气的提纯都是蓝藻发酵产沼气应用的难点。小规模研究了蓝藻与秸秆、厌氧污泥在不同配比的条件下产甲烷的能力以及所产沼气中含硫气体的浓度特征。实验与分析结果显示,蓝藻∶秸秆∶接种污泥的质量比为8∶2∶1时,系统累计产甲烷量最高,产率为176 m L/g(VS);系统所产沼气中含有多种含硫气体,以硫化氢(H2S)为主,在50 d监测过程中最高达到14016.12μL/L;H2S与甲硫醇(CH4S)、甲硫醚(C2H6S)、二甲基二硫醚(C2H6S2)、二甲基三硫醚(C2H6S3)等含硫气体含量显著正相关,显示H2S和其他几种含硫气体浓度变化具有较高的一致性。Anaerobic fermentation is a kind of effective resource utilizations of algae. However, the carbon-nitrogen ratio （C/N） of al- gae is low and the methane need to be purified, which are the difficulties for practicality of algae fermentation. Methane production from different blue algae systems and sulfurous gas concentrations were investigated in lab scale. The results showed that the total meth- ane production from system with algae/straw/seed sludge ratio of 8/2/1 was the highest, with productive rate of 176 mL/g（VS）. There were different sulfurous gases within the biogas. H：S concentration was the highest, with the maximum value of 14016. 12 μL/L during 50 days of monitoring. H2S value was positively correlated with CH4S, C2H6S, C2H6S2 and C2H6S3, which indicated the higher H2S concentration, the higher CH4 S, C2 H6 S, C2 H6 S2 and C2 H6 S3 concentrations.

关 键 词：蓝藻 甲烷 碳氮比 含硫气体 相关分析 

分 类 号：TQ221.11[化学工程—有机化工] S216.4[农业科学—农业机械化工程]