https://scholars.lib.ntu.edu.tw/handle/123456789/547657
標題: | Dark fermentative hydrogen production using macroalgae (Ulva sp.) as the renewable feedstock | 作者: | Margareta, W. Nagarajan, D. Chang, J.-S. Lee, D.-J. DUU-JONG LEE |
關鍵字: | Biohydrogen; Clostridium sp.; Dark fermentation; Macroalgae; Ulva sp. | 公開日期: | 2020 | 卷: | 262 | 來源出版物: | Applied Energy | 摘要: | Macroalgae, commonly known as seaweed, are rich in carbohydrates which makes them a potential feedstock for biohydrogen production via dark fermentation. In this study, the green macroalgal biomass Ulva sp. was subjected to mild acid-thermal combined pretreatment for the effective release of fermentable sugars. Among the H2SO4 acid concentrations tested, 4% H2SO4 and 121 °C for 40 min attained the highest hydrolysis efficiency with a reducing sugar yield of 0.21 g RS/g biomass. The concentration of fermentation inhibitors furfural and 5-hydroxymethyl furfural were below 1 g/L. Using an initial reducing sugar concentration of 12 g/L and pH 5.5, Clostridium butyricum CGS5 achieved the highest cumulative hydrogen production (2340 mL/L), maximum hydrogen productivity (208.3 mL/L/h), and hydrogen yield (1.53 mol H2/mole RS). In continuous fermentation with 6 h hydraulic retention time, maximum hydrogen productivity increased to 782.45 mL/L/h with a hydrogen yield of 1.52 mol H2/mol hexose. To the best of our knowledge, we report for the first time, biohydrogen production via dark fermentation from green macroalgal biomass Ulva sp. with better yield and productivity. © 2020 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.url?eid=2-s2.0-85078785102&partnerID=40&md5=19dbe27d1112828ce827dd1717f0a0b2 https://scholars.lib.ntu.edu.tw/handle/123456789/547657 |
ISSN: | Margareta, W.;Nagarajan, D.;Chang, J.-S.;Lee, D.-J. | DOI: | 10.1016/j.apenergy.2020.114574 | SDG/關鍵字: | Aldehydes; Biomass; Clostridium; Feedstocks; Fermentation; Furfural; Productivity; Sugar industry; Bio-hydrogen; Bio-hydrogen production; Dark fermentation; Dark fermentative hydrogen production; Fermentation inhibitors; Hydraulic retention time; Macro-algae; Ulva sp; Hydrogen production; biomass; concentration (composition); fermentation; hydrogen; hydrolysis; inhibitor; macroalga; sugar; Clostridium butyricum; Clostridium sp.; Ulva |
顯示於: | 化學工程學系 |
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