Heavy Metal Removal (1 of 2) (IMAGE) Brown University Caption Brown engineers have devised an automated system that combines chemical precipitation with electrolytic techniques in a cyclic fashion to remove mixtures of trace heavy metals from contaminated water. Credit Joseph Calo lab, Brown University Usage Restrictions None License Licensed content 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.