| 초록 |
The effects of cultivation pH and different carbon sources on hydrogen production by green alga Chlorella vulgaris were investigated in a repeated two-stage cyclic process. (i) Stage I: a photosynthetic carbon fixation under CO2 and light and (ii) Stage II: an anaerobic H2 production in controlled light conditions (light in first 24 hours and dark thereafter). During the hydrogen production stage (Stage ll), different carbon sources (glucose, fructose, sucrose, cellulose, starch, butyrate and malate) were compared. Glucose, fructose, and sucrose produced hydrogen efficiently, while other carbon sources were unable to produce hydrogen. Sucrose produced 1315 ml/L of volume and fructose produced 63.5 ml/h/L of maximum rate. |
