One drawback to injecting engine exhaust as CO2, or burning CO, in a greenhouse is removing residual CO. Even low levels appear to be toxic to some plants.
Tom Miles -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Viswanathan KS Sent: Wednesday, December 15, 2010 9:43 PM To: Discussion of biomass pyrolysis and gasification Subject: Re: [Gasification] Gasifiers and greenhouses and CO2 augmentation. Guag The web site show only an extinct fish. On Thu, Dec 16, 2010 at 10:56 AM, Guag Meister <[email protected]>wrote: > Hi All ; > > Air normally contains about 300ppm of CO2, and this is barely above > starvation level for most plants. Raising the CO2 levels to 1,000 ppm or > even higher can result in increased growth of most plants by 20%-100% (if > given sufficient light to utilize this CO2 by photosynthesis). > > Increased CO2 is a well established technique for marijuana growers as one > example (I am not recommending that anyone grow marijuana, this is just an > example). Apparently the cannabis plant developed during a previous time on > the earth with much higher CO2 levels than present. Growth can be increased > by as much as 100%, a very interesting prospect for growers of this high > value cash crop. > > Northern greenhouses will necessarily be as airtight as possible to prevent > heat loss. An undesirable effect from this is low levels of CO2 as the > plants scavenge the available CO2 which is not replaced. This results in > very low levels of CO2 inside the greenhouse and reduced plant growth. > > I searched and found one example of heating a greenhouse with a gasifier, > unfortunately this installation puts the gasifier outside and does not > attempt to capture the CO2. > > http://news.yahoo.com/s/ap/as_japan_extinct_fish_found > > A gasifier inside a greenhouse would result is 50% less fuel burned and 50% > more plant growth. Seems to me that markets of gasifiers have a large > potential market here that no one that I can see is capitalizing on. Is > anyone doing this? > > Best Regards, > > Peter G. > Thailand > www.gac-seeds.com > > > > > > > > > > > > _______________________________________________ > The Gasification list has moved to > [email protected] - please update your email contacts to > reflect the change. > Please visit http://info.bioenergylists.org for more news on the list > move. > Thank you, > Gasification Administrator > _______________________________________________ The Gasification list has moved to [email protected] - please update your email contacts to reflect the change. Please visit http://info.bioenergylists.org for more news on the list move. Thank you, Gasification Administrator _______________________________________________ The Gasification list has moved to [email protected] - please update your email contacts to reflect the change. Please visit http://info.bioenergylists.org for more news on the list move. Thank you, Gasification Administrator
