Dr. Penguin
New member
Welcome to IC Mag's official Oxygenator discussion thread. For those of you that don't know what it is, I'll start with an explanation.
An Oxygenator is a device that uses a catalytic reaction to break down H2O2 (hydrogen peroxide) into water and pure oxygen.
2H2O2 ---Catalyst---> 2H2O + O2
There have been a few versions of the device marketed commercially for use with fish, the most popular of which is called the Oxydator. The device is sold under the name Dr. Söchting's Oxydator and is advertised as providing the maximum dissolved oxygen possible in a fish pond or aquarium. The device is patented, a copy of which can be found here and an updated version here.
Since the device uses pure oxygen to provide the DO (dissolved oxygen) to plants roots in a hydro system, we should be able to achieve much higher levels of DO than would be possible using air which is ~21% oxygen. As many here can attest, the more DO to the roots, the faster the plants grow. That alone would be a great achievement, but couple it with the increased stealth and security of no more loud bubblers/airpumps, and protection in the case of power outages (always a fear with hydro), we may really be on to something. While I was researching this idea I stumbled across a page detailing an easy to build replica of the device shown here.
Wow, all we need to build it is a pressure tight bottle (think soda bottle), a lead weight, an air stone (the smaller the pore size the better), tubing, and some H2O2. How easy!
So now we know what it does and how to build a simple version to test it. The only things left to do are to try to refine our design, test it (preferably with a DO meter), and build a large scale proof of concept system. We have a lot of brilliant people on this forum and together, I think we can revolutionize the way we provide oxygen to the roots of our plants!
The parts of the design that I really think could use improvement are the longevity of the H2O2, improve catalyst performance/safety, and increase the amount of oxygen that actually dissolves so none is wasted.
The longevity issue is addressed well in the DIY page I linked to above, namely using two large bottles set up about a week apart so that as one slows down in production, the other is running full steam. We can also increase longevity by diluting the H2O2 which slows the reaction. Using one liter sized jugs @3% H2O2 we should be able to get up to a month worth of O2 from each jug, not to bad considering how cheap 20% H2O2 is from a pool shop.
Catalyst performance is another big issue. The article I linked to uses lead as the catalyst which could be toxic if it ever found its way into the reservoir (very unlikely but not inconceivable). Lead also has the unfortunate property of being converted into lead oxide(II) when exposed to the high heat produced when H2O2 concentration is >~8%.
H2O2 + PB --> PbO + H2O
This reaction causes a breakdown of the catalyst and reduces the oxygen released. A much better catalyst would be platinum, copper, peroxidase (an enzyme found in potato and yeast + others), activated carbon and manganese dioxide as used by Dr. Söchting, or silver as is used in the updated patent above.
The last thing that I believe can be refined is the amount of oxygen that is actually dissolved. If the bubbles make it to the surface of the res, they pop and go out into the atmosphere thus being wasted. If we trap all the bubbles under the surface, we are using our oxygen much more efficiently. Thankfully our friends in the planted aquarium field have already solved this one for us. By using a device called a CO2 reactor (in our case O2 reactor) we can use 100% of the O2 produced. Here is a picture of a simple CO2 reactor:
If anyone here has any thoughts, ideas, or more importantly a DO meter, feel free to post it up. With some testing and experimentation we should have an awesome new way to give our plants a huge growth boost. Thanks guys!
P.S. The idea and initial research for this design was conceived in this thread. Thanks Sgt.Stedenko and anyone else that participated.
An Oxygenator is a device that uses a catalytic reaction to break down H2O2 (hydrogen peroxide) into water and pure oxygen.
2H2O2 ---Catalyst---> 2H2O + O2
There have been a few versions of the device marketed commercially for use with fish, the most popular of which is called the Oxydator. The device is sold under the name Dr. Söchting's Oxydator and is advertised as providing the maximum dissolved oxygen possible in a fish pond or aquarium. The device is patented, a copy of which can be found here and an updated version here.
Since the device uses pure oxygen to provide the DO (dissolved oxygen) to plants roots in a hydro system, we should be able to achieve much higher levels of DO than would be possible using air which is ~21% oxygen. As many here can attest, the more DO to the roots, the faster the plants grow. That alone would be a great achievement, but couple it with the increased stealth and security of no more loud bubblers/airpumps, and protection in the case of power outages (always a fear with hydro), we may really be on to something. While I was researching this idea I stumbled across a page detailing an easy to build replica of the device shown here.
Wow, all we need to build it is a pressure tight bottle (think soda bottle), a lead weight, an air stone (the smaller the pore size the better), tubing, and some H2O2. How easy!
So now we know what it does and how to build a simple version to test it. The only things left to do are to try to refine our design, test it (preferably with a DO meter), and build a large scale proof of concept system. We have a lot of brilliant people on this forum and together, I think we can revolutionize the way we provide oxygen to the roots of our plants!
The parts of the design that I really think could use improvement are the longevity of the H2O2, improve catalyst performance/safety, and increase the amount of oxygen that actually dissolves so none is wasted.
The longevity issue is addressed well in the DIY page I linked to above, namely using two large bottles set up about a week apart so that as one slows down in production, the other is running full steam. We can also increase longevity by diluting the H2O2 which slows the reaction. Using one liter sized jugs @3% H2O2 we should be able to get up to a month worth of O2 from each jug, not to bad considering how cheap 20% H2O2 is from a pool shop.
Catalyst performance is another big issue. The article I linked to uses lead as the catalyst which could be toxic if it ever found its way into the reservoir (very unlikely but not inconceivable). Lead also has the unfortunate property of being converted into lead oxide(II) when exposed to the high heat produced when H2O2 concentration is >~8%.
H2O2 + PB --> PbO + H2O
This reaction causes a breakdown of the catalyst and reduces the oxygen released. A much better catalyst would be platinum, copper, peroxidase (an enzyme found in potato and yeast + others), activated carbon and manganese dioxide as used by Dr. Söchting, or silver as is used in the updated patent above.
The last thing that I believe can be refined is the amount of oxygen that is actually dissolved. If the bubbles make it to the surface of the res, they pop and go out into the atmosphere thus being wasted. If we trap all the bubbles under the surface, we are using our oxygen much more efficiently. Thankfully our friends in the planted aquarium field have already solved this one for us. By using a device called a CO2 reactor (in our case O2 reactor) we can use 100% of the O2 produced. Here is a picture of a simple CO2 reactor:
If anyone here has any thoughts, ideas, or more importantly a DO meter, feel free to post it up. With some testing and experimentation we should have an awesome new way to give our plants a huge growth boost. Thanks guys!
P.S. The idea and initial research for this design was conceived in this thread. Thanks Sgt.Stedenko and anyone else that participated.
