CVEN_Sludge (IMAGE) Texas A&M University Caption Zobellella denitrificans ZD1 bacteria feed on sludge (both shown in test tube) to make biodegrade bioplastics. Credit Dr. Kung-Hui (Bella) Chu 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.