Peter,
The calculations in "Negative carbon via Ocean Afforestation" are based on actual macroalgae growth rates with whatever CO2 transfer and nutrients are naturally available. Either may be limiting.
Your experience would appear to confirm our seaweed forests can be havens of high pH for critters in need of pre-industrial pH for shell formation.
---------- Original Message --------
Subject: [geo] Ocean based algal growth: rate of CO2 transfer
From: Peter Flynn <[email protected]>
Date: Wed, January 09, 2013 6:36 pm
To: [email protected]
--I am joining this discussion late, so I hope I am not covering ground already discussed.Some years back a graduate student and I looked at a conceptual scheme to grow algae and sink them into the deep ocean, using increased salinity from evaporation as the “pump”. We found that the rate limiting step was not sunlight or evaporation, but rather the transport of carbon dioxide from the atmosphere into the ocean. This was, as I recall, 10 times slower than the potential rate of growth of the algae.We came to understand why agitation and CO2 addition are included in some commercial algal farms.Peter FlynnPeter Flynn, P. Eng., Ph. D.Emeritus Professor and Poole Chair in Management for EngineersDepartment of Mechanical EngineeringUniversity of Albertacell: 928 451 4455
You received this message because you are subscribed to the Google Groups "geoengineering" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to [email protected].
For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en.
You received this message because you are subscribed to the Google Groups "geoengineering" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to [email protected].
For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en.
