Evaluation of different pretreatments on organic matter solubilization and hydrogen fermentation of mixed microalgae consortia
Evaluation of different pretreatments on organic matter solubilization and hydrogen fermentation of mixed microalgae consortia
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不同预处理对混合微藻群落有机物溶解及氢发酵的评价
DOI：
10.1016/j.ijhydene.2016.05.195
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发表时间：
2016
影响因子：
7.2
通讯作者：
Kim SH
中科院分区：
文献类型：
--
作者：
Kumar;G.Y.;Zhen G;Sivagurunathan P;Kobayashi;T.;Xu;K.Q;Kim SH
研究了自然生态位中混合微藻群落(主要由海藻和小球藻组成)的预处理方法(如高压灭菌法、超声波处理法和电解法)的影响。此外，培养的生物量(湿)随后被用来在中温条件下发酵生产H_2。结果表明，经电解处理的藻类的产氢率和产氢量最高，分别为236g±1014g/L·d和37.7g±100.4g(挥发性固形物)VS，而未经处理的藻类分别为和9.5g·L~(-1)/L·d和9.5g±100.0g·g·VS·d。观察到的HPR和HY值显著增加近4倍。前处理过程中有机物的增溶作用与产氢量呈正相关。相应的前处理方法的产能率和产率分别为1.44、1.79和2.65kJ/L·d，相应的产率也分别下降在0.32、0.41和0.43kJ/g VS的范围内。
This study investigated the effects of pretreatment methods (such as autoclave, ultrasonication and electrolysis) of mixed microalgae consortia (predominantly composed ofScenedesmusfollowed by Chlorella species) from natural ecological niche. In addition, the cultivated biomass (wet) was subsequently utilized for fermentative H2production in mesophilic regime. The results showed that peak hydrogen production rate (HPR) and hydrogen yield (HY) were achieved from electrolysis pretreated algal consortia as 236 ± 14 mL/L-d and 37.7 ± 0.4 mL/g (volatile solids) VSadded, whereas the untreated algal consortia resulted in the turnout as 64 ± 5 mL/L-d and 9.5 ± 0.0 mL/g VSadded, respectively. The significant increment observed in HPR and HY values were nearly 4 times higher. The solubilization of organic matter during the pretreatment showed positive correlation with the H2production. The energy generation rate and yield of the corresponding pretreatment methods were as follows, 1.44, 1.79 and 2.65 kJ/L-d for autoclave, ultra-sonication and electrolysis, the corresponding yields also fell in the range of 0.32, 0.41 and 0.43 kJ/g VSadded, respectively.