Wastewater purified (IMAGE) DOE/Pacific Northwest National Laboratory Caption A new patent-pending flow cell bioreactor developed at Pacific Northwest National Laboratory can purify wastewater (seen here) and generate hydrogen to help fuel the process. Credit (Photo by Andrea Starr | Pacific Northwest National Laboratory) Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.