Utilization of flue gas from a power plant for tank cultivation of the red seaweed Gracilaria cornea

Flue gases containing 12–15% CO 2, mixed with warm seawater disposed by a power plant, were used to cultivate Gracilaria cornea (Rhodophyta) in 1000 L or 40 L tanks at pH 8.0. During the 13-month study, growth rates were similar to those where commercial CO 2 was used (94.1% vs. 91.3% biomass increm...

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Veröffentlicht in:Aquaculture 2005-09, Vol.249 (1), p.311-316
Hauptverfasser: Israel, Alvaro, Gavrieli, Jonah, Glazer, Anat, Friedlander, Michael
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creator Israel, Alvaro
Gavrieli, Jonah
Glazer, Anat
Friedlander, Michael
description Flue gases containing 12–15% CO 2, mixed with warm seawater disposed by a power plant, were used to cultivate Gracilaria cornea (Rhodophyta) in 1000 L or 40 L tanks at pH 8.0. During the 13-month study, growth rates were similar to those where commercial CO 2 was used (94.1% vs. 91.3% biomass increments per week), with additions of NH 4 and PO 4 having significant enhancing effects on algal growth. Concentrations of chemical components, including heavy metals, measured in the seawater medium were within the range of those found in the tissue and agar of G. cornea, meeting international standards for marine pollutants. In average, the agar content and agar strength were similar for the different treatments, as were the levels of carbohydrates and total soluble proteins. These results show that flue gas and warm seawater can be used for intensive long-term seaweed tank cultivation presumably at reduced production costs as compared with commercial CO 2.
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subjects Algae
algae and seaweeds
ammonia
Animal aquaculture
Animal productions
aquaculture tanks
Biological and medical sciences
biomass
Carbon dioxide
chemical composition
chemical constituents of plants
CO 2 utilization
Flue gas
Fundamental and applied biological sciences. Psychology
General aspects
Gracilaria
Gracilaria cornea
Heavy metal content
Heavy metals
phosphates
Power plants
Seawater
Seaweed cultivation
title Utilization of flue gas from a power plant for tank cultivation of the red seaweed Gracilaria cornea
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