Effects of various dilute acid pretreatments on the biochemical hydrogen production potential of marine macroalgal biomass
Effects of various dilute acid pretreatments on the biochemical hydrogen production potential of marine macroalgal biomass
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DOI：
10.1016/j.ijhydene.2017.05.106
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发表时间：
2017-11
影响因子：
7.2
通讯作者：
P. Sivagurunathan;Gopalakrishnan Kumar;Takurou Kobayashi;Kaiqin Xu;Sang‐Hyoun Kim
中科院分区：
文献类型：
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作者：
P. Sivagurunathan;Gopalakrishnan Kumar;Takurou Kobayashi;Kaiqin Xu;Sang‐Hyoun Kim
本研究研究了各种稀酸（HCl、H2SO4、HNO3、H3PO4）预处理对海洋巨藻生物质石花菜生物质溶解以及随后在批量小瓶中氢气发酵的影响。将干燥磨碎的生物质在121°C的温度、5%(w/v)的固/液(S/L)比、各种试剂的稀酸浓度(1%)和30分钟的反应时间下水解。然后将在这些条件下获得的水解产物进料至分批氢发酵。结果表明，只有H2SO4预处理方法对石花菜生物产氢的提高有显着效果，而其他预处理条件甚至比对照实验更差。稀硫酸 (1%) 提供的最大氢气产量为 52 mL-H2/g-干生物质，而对照实验提供的氢气效率为 27 mL-H2/g-干生物质。结果表明，选择合适的预处理方法对于提高大型藻类生物质的产氢能力至关重要。
This research investigated the effects of various dilute acid (HCl, H2SO4, HNO3, H3PO4) pretreatment on the solubilization of marine macroalgal biomassGelidium amansiiand subsequent hydrogen fermentation in a batch vials. The dry grounded biomass was hydrolyzed at temperature of 121 °C, solid/liquid (S/L) ratio of 5% (w/v), dilute acid concentration (1%) of various reagents, and reaction time of 30 min. The hydrolyzates obtained at these conditions were then fed to batch hydrogen fermentation. Results revealed that only H2SO4pretreatment method had a significant effect on improvement of biohydrogen production fromGelidium amansii, whereas the other pretreatment conditions were even worse than the control experiment. Dilute sulfuric acid (1%) provided a maximum hydrogen production of 52 mL-H2/g-dry biomass, whereas control experiment provided a hydrogen efficiency of 27 mL-H2/g-dry biomass. The results showed that selection of appropriate pretreatment method is essential for enhanced hydrogen production from macroalgal biomass.