What and why?

Resource Electromembrane LLC

is an

• · Early research-stage startup,

• · Developing a platform technology, to produce

• · Novel, high-performance electroseparation membranes, for

• · Water, environmental, chemical, and energy applications.

We expect these membranes to

• · Improve the economics of electrodialysis,

• · Increase water yield in desalination, and

• · Turn waste brine into a useful resource.

Initial Focus Areas

Water scarcity

Increase efficiency of brackish groundwater

desalination

• In recent years water scarcity - long an issue in much of the developing world - has been felt in suburban and rural areas across the United States.

• The United States has a substantial brackish groundwater resource.

• Electrodialysis is an established method for brackish water desalination but efficiency is limiting at many sites.

• Electrodialysis can compliment reverse osmosis to increase fresh water recovery and cut energy costs.

• Electrodialysis integrates well with solar power at remote sites.

• Improved efficiency - in freestanding or combined systems - will make more sites economically viable.

Waste to resource

Enable recovery of chemical and mineral products

from waste brine

• Water desalination and oil production both produce waste brine.

• Waste brine at inland sites is commonly disposed by geological injection, surface discharge or irrigation. .

• Suitable disposal sites are limited due to pollution, seismic. and other safety concerns.

• Bipolar electrodialysis can produce chemicals - acids and bases - from brines, freeing additional fresh water in the process.

• Conventional electrodialysis membranes have multiple leakage paths that prevent production of useful concentrations of these products.

• We propose to eliminate the leakage paths using a novel membrane structure and thereby make bipolar electrodialysis practical for brine processing.

• Having an outlet for the sodium chloride will enable recovery of more valuable mineral products from the brine