Water Drops

Nanobubble Technology


Optimal dissolved oxygen for optimal growing conditions. 
 

Nanobubbles are the most cost-effective way to provide dissolved oxygen at any depth. Simple as that.
Bringing state-of-the-art water treatment tech to Aquaculture

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Nanobubble Technology

Moleaer's nanobubble generators produce trillions of nano-sized bubbles less than 200 nanometers in diameter.

Bubbles of this size exhibit extraordinary properties including neutral buoyancy, a strong surface charge, and enormous surface area. By harnessing these unique attributes, Moleaer's nanobubbles deliver differentiated benefits to diverse applications ranging from aquaculture to wastewater treatment. See how Moleaer's nanobubble technology is fundamentally changing how businesses utilize gases to enhance their industrial processes, eliminate chemicals, save energy and treat water.

Michael Stenstrom, the foremost aeration industry expert and distinguished professor at UCLA, said, "Moleaer's nanobubble generators provide the highest oxygen transfer efficiency of any aeration technology I have tested so far."

Additionally, the size and concentration of Moleaer’s nanobubbles are measured using Nanoparticle Tracking Analysis (NTA) performed by a NanoSight instrument.  You can read the NanoSight report here.

Neutral Buoyancy

Moleaer's nanobubbles have a typical mean diameter of roughly 80nm based on extensive testing through independent laboratories using Malvern's NanoSight Nanoparticle Tracking Analysis software. Bubbles this size lack enough buoyancy to reach the surface and instead follow Brownian motion. The net effect is that nanobubbles will remain suspended in water for months until they dissolve, traveling randomly throughout the body of water and efficiently aerating the entire water column. Subsequently, dissolved oxygen (DO) measured at the deepest parts of a tank or pond will match the DO recorded near the surface. This unique behavior enables nanobubbles to provide a homogenous distribution of oxygen throughout an entire body of water.

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Surface Charge

All bubbles naturally possess a surface charge. The smaller the bubble, the stronger the surface charge. Nanobubbles have a high zeta potential, which is the electro kinetic potential in colloidal dispersions. Through the testing done with zeta-sizers, it has been shown that the strong negative charge of nanobubbles limits their coalescence, meaning the integrity of the bubble is preserved at any depth for extended periods of time. Additionally, the negative charge combined with their high concentration improves separation efficiency in flotation processes by increasing collision probability. This unique property allows wastewater, Oil and Gas and Mining operators to float more suspended matter than through conventional methods.

Gas Reserve

The neutral buoyancy and negative surface charge of nanobubbles allows them to remain in suspension for months at a time. This occurs even after the solution reaches oxygen saturation. In this capacity, the nanobubbles act as a gas reserve in the solution. As oxygen is consumed from the water by biology, chemistry, or off-gassing, the nanobubbles rapidly diffuse more oxygen into the water, maintaining elevated dissolved oxygen levels until the nanobubbles are depleted. This additional gas reserve, estimated up to 20% over the saturation point, enables industries to utilize gases more cost effectively than ever before.

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Oxidation

Zeta potential is a key indicator of the stability of colloidal dispersions. The higher the zeta potential, the more stable the behavior of the colloidal particle. Nanobubbles have a high zeta potential, meaning their interaction with surrounding colloidal particles is stable compared to larger bubbles. The higher zeta potential also causes excess ions to be formed and the creation of free radicals. Free radicals are atoms with an odd number of electrons that can be formed when oxygen interacts with certain molecules. Free radicals are important to processes such as combustion, atmospheric chemistry, polymerization, plasma chemistry, biochemistry and other chemical reactions.

Bubble Size

Nanobubbles are the smallest bubble size known, 500 times smaller than a microbubble, or about the size of a virus. At this scale, far more nanobubbles can fit in the same volume of water compared to other bubbles. They also have several unique characteristics directly related to their miniature size that includes neutral buoyancy, a strong electric charge, and a high transfer efficiency. Larger bubbles do not possess these characteristics, making them less beneficial in a number of applications when compared to Moleaer's nanobubbles.

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84nm nanobubbles 

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Aquaculture
Applications 

Over half of the fish and shellfish directly consumed by humans is produced through aquaculture, also known as fish farming. As fish farmers look to produce more fish to keep up with global demand, they run into severe problems with a lack of dissolved oxygen (DO) in the water. Fish and shellfish need oxygen to breathe. When fish populations are tightly packed, a shortage of DO is inevitable because the fish and shellfish consume more oxygen from the water. Additionally, waste byproduct accumulates on the floor of the fish farm, damaging or eliminating bottom-dwelling plants and animals. Moleaer's advanced gas-to-liquid injection technology can alleviate these problems by rapidly elevating and maintaining higher levels of DO levels in the fish farm and effectively oxygenating sea floors due to the nanobubbles lack of buoyancy.

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Stocking Density


Stocking Density


The metabolic rates of fish can be severely affected by the concentration of oxygen in the farm. Low DO levels lead to decreased respiration and feeding activity that slow fish growth rates. An oxygen saturation level of 85% and above is ideal for aquaculture; lower levels have varying effects on the fish and mollusks, ranging from reduced appetite to massive mortality rates. Oxygen aeration using the Moleaer nanobubble generator ensures that fish farmers can achieve the highest possible stocking densities while ensuring high survival rates to boost yields and profits.

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Disease Prevention



Disease Prevention


Low DO levels in the water of an aquaculture farm can also lead to disease and fungal infections. A lack of DO can lead to a build-up of fish and mollusk waste on the sea floor, creating conditions that are ideal for bacteria and fungus to thrive. Farmers have traditionally turned to vaccination, antibiotics, or additive chemicals to deal with these issues. However, these methods are costly and cause great stress to the fish, making them less healthy for human consumption. Moleaer's nanobubble technology uses the power of clean and natural oxygen delivered through neutrally buoyant nanobubbles to prevent disease, providing a much healthier, efficient, and cost-effective solution for aquaculture.

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Efficient Oxygen Transfer 


Efficient Oxygen Transfer

Aquaculture farmers need large amounts of oxygen to maintain a healthy fish and mollusk population. Failure to add additional oxygen to the water will lead to poor growing conditions and is not a feasible option.
Traditional aeration methods are very inefficient, leading to high costs to achieve proper levels. Moleaer's nanobubble generator is the ideal technology to maximize oxygen-transfer efficiency, over 90%, of any aeration method on the market today.