Electrochemical Nano Diffusion (END)

Our proprietary Electrochemical Nano Diffusion (END) technology gives MI Systems a competitive advantage in the desalination market.

  • The electro-desalination process itself requires very little energy. Our units are capable of internally generating enough energy to monitor the health and efficiency of the process. Depending on the water quality, the only external energy that may be required is that which is used to pump salt water into the unit.
  • The process is operated at a low pressure. This means that any external energy required for pumping is relatively low. Additionally, no high-pressure components are required, making the unit low in both cost and weight.
  • Units are comprised of stackable cells. This means that units are easily configured to specific customer requirements with minimal design effort.

The MI Systems END process is an ingenious combination of an electrochemical and concentration cell technology. It resembles an electrochemical process in that there are variations of anodes and cathodes. It resembles a concentration cell in that it creatively extracts the potential energy from salinity gradients. The target design life of the END water treatment cell is 20 years.

How it works

The END technology captures the energy hidden in the processing of the electrodes, salt ions and other elements to drive the process. The key to the process are the membranes, which have pores in the range of several nanometers (1 billionth of a meter). The membranes separate the product and brine streams in the electro-desalination cell: the treated product stream and the high molarity brine stream. The porous membranes selectively allow either cations or anions to pass through, beneficially removing them from the product stream. The END electrodes, spacers, and concentration gradient provides a mechanism to deliver product water at low energy by minimizing the internal resistances. In addition, due to the unique combination of our novel process design and novel power profiles scaling/fouling of the membranes is greatly reduced resulting in longer life without chemical addition as compared to traditional membrane filtration technologies.

Advantages of the “END” Process

The END desalination process yields several advantages over traditional Reverse Osmosis desalination.

  1. END has an extremely low energy footprint.
  2. END has a very high process recovery. Reverse Osmosis can produce as low as 35 gallons of fresh water for every 100 gallons of salt water input, whereas END typically yields greater than 90 gallons of fresh water for every 100 gallons of salt water or contaminated water unit.
  3. The END process operates at a low pressure which allows us to implement lower complexity, and lower pressure components.
  4. The END desalination unit is designed to require minimal maintenance during its targeted 20 year lifespan. The process is automated in order to ensure optimal performance with minimal intervention.