Researchers at the Penn State have come up with a greener alternative to cope up with the biofouling of the RO membranes. They have genetically engineered the E.coli strains that act as ‘living RO membranes (LROM)’, and are concsious of their growing density during biofilm formation. When they reach a certain density they limit the further development of the biofilm. The LROM approach have cut-down the expense of otherwise used chemicals like biocides and also present a safer environment friendly approach. To read more clink on the link below.