Fuels from marine biomass
Journal Article
·
· Oceanus; (United States)
OSTI ID:5857582
Seaweed and kelp are being investigated as possible large-scale sources of marine biomass for energy. By suspending seaweed in water, instead of near the bottom where it usually grows, the seaweed cultures maintain themselves permanently in a nonreproductive, nonfruiting stage, thereby continually vegetating. Under highly idealized test conditions (vigorous aeration, rapid exchange of seawater, frequent harvests and nutrient-enriched), the red seaweed Gracilaria tikvahiae yielded 35 g dry weight per sq. m daily, equivalent to 51 dry tons per acre yearly (with 50% ash content). The prospect of extensive offshore farms for growing plants on floating trays or woven into ropes near the surface is being studied by means of the 50 m long Macrocystis pyrifera kelp on a modular ocean test farm consisting of a 9 ft. diameter buoy attached to radial arms holding the kelp plants nutrient-rich water is pumped from depths of 1,500 ft.
- Research Organization:
- Woods Hole Oceanographic Institution, Woods Hole, Mass.
- OSTI ID:
- 5857582
- Journal Information:
- Oceanus; (United States), Journal Name: Oceanus; (United States) Vol. 22; ISSN OCEAA
- Country of Publication:
- United States
- Language:
- English
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