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Optimization of batch dilute-acid hydrolysis for biohydrogen production from red algal biomass

机译:红藻生物质生产氢的间歇式稀酸水解工艺的优化

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摘要

Marine algae are promising alternative sources for bioenergy including hydrogen. Their polymeric structure, however, requires a pretreatment such as dilute-acid hydrolysis prior to fermentation. This study aimed to optimize the control variables of batch dilute-acid hydrolysis for dark hydrogen fermentation of algal biomass. The powder of Gelidium amansii was hydrolyzed at temperatures of 120-180 "C, solid/liquid (S/L) ratios of 5-15% (w/ v), and H_2SO_4 concentrations of 0.5-1.5% (w/w), and then fed to batch hydrogen fermentation. Among the three control variables, hydrolysis temperature was the most significant for hydrogen production as well as for hydrolysis efficiency. The maximum hydrogen production performance of 0.51 L H_2/L/hr and 37.0 mL H_2/g dry biomass was found at 161 -164 °C hydrolysis temperature, 12.7-14.1% S/L ratio, and 0.50% H_2SO_4. The optimized dilute-acid hydrolysis would enhance the feasibility of the red algal biomass as a suitable substrate for hydrogen fermentation.
机译:海藻有望成为包括氢在内的生物能源的替代来源。然而,它们的聚合物结构在发酵之前需要预处理,例如稀酸水解。本研究旨在优化藻类生物质暗氢发酵中分批稀酸水解的控制变量。在120-180“ C的温度,5-15%(w / v)的固/液(S / L)比和0.5-1.5%(w / w)的H_2SO_4浓度下水解金盏花粉末。在三个控制变量中,水解温度对制氢和水解效率影响最大,最大制氢性能为0.51 L H_2 / L / hr和37.0 mL H_2 / g干重。在161 -164°C的水解温度,12.7-14.1%的S / L比和0.50%的H_2SO_4下发现了生物量,优化的稀酸水解将增强红藻生物量作为氢发酵合适底物的可行性。

著录项

  • 来源
    《International journal of hydrogen energy》 |2013年第14期|6130-6136|共7页
  • 作者单位

    Department of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong, Seongbuk-gu, Seoul 136-714,Republic of Korea,Green Materials Technology Center, Korea Institute of Industrial Technology (KITECH), 35-3 Hongcheon-ri, Ipjang-myeon, Cheonan,Chungnam 330-825, Republic of Korea;

    Department of Environmental Engineering, Daegu University, Jillyang, Gyeongsan, Gyeongbuk 712-714, Republic of Korea;

    Green Materials Technology Center, Korea Institute of Industrial Technology (KITECH), 35-3 Hongcheon-ri, Ipjang-myeon, Cheonan,Chungnam 330-825, Republic of Korea;

    Department of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong, Seongbuk-gu, Seoul 136-714,Republic of Korea;

    Department of Environmental Engineering, Daegu University, Jillyang, Gyeongsan, Gyeongbuk 712-714, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    marine algal biomass; dilute-acid hydrolysis; dark hydrogen fermentation; hydrolysis temperature; sulfuric acid concentration; solid/liquid ratio (S/L ratio);

    机译:海洋藻类生物量稀酸水解;暗氢发酵;水解温度;硫酸浓度;固液比(S / L比);
  • 入库时间 2022-08-18 00:27:43

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