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KMID : 1094720090140030307
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Biotechnology and Bioprocess Engineering
2009 Volume.14 No. 3 p.307 ~ p.315
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Production of Hydrogen from Marine Macro-algae Biomass Using Anaerobic Sewage Sludge Microflora
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Park Jae-Il
Lee Jin-Won
Sim Sang-Jun
Lee Jae-Hwa
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Abstract
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Hydrogen was produced from various marine macro-algae (seaweeds) through anaerobic fermentation using an undefined bacterial consortium. In this study, anaerobic fermentation from various marine macro-algae for Ulva lactuca, Porphyra tenera, Undaria pinnatifida, and Laminaria japonica was studied. From this analysis Laminaria japonica was determined to be the optimum substrate for hydrogen production. When L. japonica was used as the carbon source for enhanced hydrogen production, the optimum fermentation temperature, substrate concentration, initial pH, and pretreatment condition were determined to be 35캜, 5%, 7.5, and BT120 (Ball mill and thermal treatments at 120캜 for 30 min), respectively. In addition, hydrogen production was improved when the sludge was heat-treated at 65캜 for 20 min. Under these conditions, about 4,164 mL of hydrogen was produced from 50 g/L of dry algae (L. japonica) for 50 h, with a hydrogen concentration around 34.4%. And the maximum hydrogen production rate and yield were found to be 70 mL/L뷻 and 28 mL/g dry algae, respectively.
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KEYWORD
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hydrogen, marine macro-algae, Laminaria japonica, anaerobic fermentation
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