Enhanced bioenergy recovery from oil-extracted microalgae residues via two-step H2/CH4 or H2/butanol anaerobic fermentation

Hai Hsuan Cheng, Liang Ming Whang, Shu Hsien Wu

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

Algae-based biodiesel is considered a promising alternative energy; therefore, the treatment of microalgae residues would be necessary. Anaerobic processes can be used for treating oil-extracted microalgae residues (OMR) and at the same time for recovering bioenergy. In this study, anaerobic batch experiments were conducted to evaluate the potential of recovering bioenergy, in the forms of butanol, H2, or CH4, from pretreated OMR. Using pretreated OMR as the only substrate, a butanol yield of 0.086 g/g-carbohydrate was obtained at carbohydrate of 40 g/L. With supplemented butyrate, a highest butanol yield of 0.192 g/g-carbohydrate was achieved at pretreated OMR containing 25 g/L of carbohydrate with 15 g/L of butyrate addition, attaining the highest energy yield of 3.92 kJ/g-OMR and energy generation rate of 0.65 kJ/g-OMR/d. CH4 production from pretreated OMR attained an energy yield of 8.83 kJ/g-OMR, but energy generation rate required further improvement. H2 production alone from pretreated OMR might not be attractive regarding energy yield, but it attained a superb energy generation rate of 0.68 kJ/g-OMR/d by combining H2 production from pretreated OMR and butanol production from pretreated OMR with supplementary butyrate from H2 fermentation supernatant. This study demonstrated an integrated system as an option for treating OMR and recovering bioenergy.

原文English
頁(從 - 到)375-383
頁數9
期刊Biotechnology Journal
11
發行號3
DOIs
出版狀態Published - 2016 3月 1

All Science Journal Classification (ASJC) codes

  • 應用微生物與生物技術
  • 分子醫學

指紋

深入研究「Enhanced bioenergy recovery from oil-extracted microalgae residues via two-step H2/CH4 or H2/butanol anaerobic fermentation」主題。共同形成了獨特的指紋。

引用此