NSF Award
1127225
This Small Business Innovation Research (SBIR) Phase II project will develop commercial systems to economically purify produced water streams. Produced water is the water that is co-extracted from oil and gas production and is often ten times as voluminous as the extracted hydrocarbon. Phase II efforts will be focused on scale-up to fabricate a 200 gallon-per-minute produced water treatment system to effectively mine hydrocarbons from the fluid. The process uses a newly developed nano-engineered organosilica that rapidly and reversibly swells when exposed to organics, yet is hydrophobic and does not absorb water. The organosilica material is unique that it acts as a nanomechanical sponge extracting dispersed and dissolved hydrocarbons. The captured hydrocarbons can be recovered from the silica and the sorbent material re-used. Successful development of these water purification systems will allow for an entire new mechanism for produced water management.<br/><br/>The broader impact/commercial potential of this project development is tied to the ability to treat numerous produced water streams which are currently difficult or expensive to treat, and to obtain a higher yield in the recovery of valuable products. Approximately 800 billion gallons of produced water must be managed annually in petroleum operations around the world. This treatment process will allow existing oil and gas production fields to meet existing or higher environmental discharge standards at a lower overall cost. The system will also reduce the impact or potential impact of the discharge of produced water in emerging markets with sensitive environmental concerns. From an economic impact the system will result in a higher yield for many oil and gas fields, by capturing for refinement valuable hydrocarbons which would otherwise have been disposed of as waste. Phase I results showed that 0.4-3.5% of a typical "waste" stream is composed of potentially valuable hydrocarbons which are not recoverable with existing technology. The recovery of these hydrocarbons, which are often the lightest and most energy-valuable compounds, such as toluene and octane, will increase the value of every producing well using this system.
