[Digestion] Co-digestion of Seagrass and Cow manure
bmkrishna6 at gmail.com
Thu Dec 6 05:10:53 PST 2012
Dear Mr. Oliver,
Seaweed and Seagrass are best source of minerals but the salinity content
in the digestate would have an impact on the soil. Seaweed is washed and
then used either for composting or for extraction for agricultural use (to
negate salinity). Since seagrass is co digested with cow dung, there may
not be much problem in producing biogas and asa matter of fact your yield
should be higher. The microbes will acclamatize.
On Wed, Dec 5, 2012 at 6:35 PM, Oliver Kynaston
<oliver.kynaston at gmail.com>wrote:
> Dear List,
> I am living in tropical East Africa and have recently moved to a house
> near the sea. I have some experience in setting up and designing domestic
> scale biodigesters and am planning on installing a flexible bag or fixed
> dome digester at my new place in the next couple of weeks.
> I am planning on using cow manure as the principle substrate but was
> wondering whether I could make use of the large quantities of Sea Grass (Thalassodendron
> ciliatum <http://www.iucnredlist.org/details/173375/0>) which is washed
> up on the beach every day.
> Does anyone know whether this would be a suitable substrate for
> co-digesting with the cow manure? If so any recommendations on feeding
> rates per kg of cow manure?
> Also I am intending to use the bioslurry as a soil improver and fertiliser
> on my land and would like to know whether the salt content of the seagrass
> is likely to have a negative impact on the slurry/soil. I'm not keen on
> using precious fresh water to wash it first...
> Any pointers or links to resources would be welcome.
> Oliver Kynaston
> +255 (0) 688 494785
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