Battery Technology For Seawater Desalinationby Reverse Osmosis Reverse Osmosis | Seawater Desalination
RO has gained popularity in the desalination industry with its efficiency and quality. However, installing, maintaining and operating the whole structure requires a lot of money. The need for a better and efficient technology to operate core RO process in the plants was suggested sometime back. As soon as it was realized that the process needs to be upgraded, studies all over the world started pouring in. These studies mostly catered to the energy needs of the RO system and were directed towards improving the energy usage.
Newer technology breakthroughs
Over the years, new technology in their prototype stages right now, have emerged. This includes changes in the wastewater treatment systems, energy requirement, membrane alterations and use of chemicals. Some of these technologies are more inclined towards making Reverse Osmosis efficient. With increase seawater levels the danger of groundwater contamination has increased and so desalination plants will have to be present almost everywhere to avoid that. Scientists have provided viable options so far that can be put to good use. From anti-scalant coating on the membrane to avoid fouling, to electrodialysis in the pretreatment of the supply water, technologies are evolving fast. One such recent technology has been introduced from the University of Illinois.
Battery technology for RO
Kyle Smith and his Co-Authors in their previous study explored the possibility of using sodium ion batteries to desalinate water. The theory was based on the usage of electrodes with sodium and chloride ions which would separate salt and store it in another chamber. In their recent study, they have developed a battery with electrodes capacitated with sodium, magnesium and calcium chloride too. This is important as brackish water needs desalination too and it contains all other elements like lead, calcium, and magnesium. The group experimented with different materials to get promising results.
If put into use, this battery technology can help reduce the RO process in several different ways.
- For starters, it reduces the burden of a higher amount of rejected water which goes into the sea. This is overcome as the salt is separated and kept in a different chamber.
- Because this can be used at the earlier stages of purification, the load on the RO membrane for purification is decreased by a distinct amount.
- Batteries can be made easily and at a lesser cost than the manufacture and maintenance of core RO systems.
This technology shows immense promise as an addition to the purification process. Seawater desalination has a huge scope as the water stress is increasing each passing day in every country. It is predicted that by 2025, at least half of the world's population will be living in the dangers of unsafe or not water. To avoid this from happening technologies have to be developed and implemented so as to provide required amounts of water.
Created on Nov 29th 2017 07:06. Viewed 267 times.