"San Jose-based zNano is getting attention for what could be a breakthrough technology designed to recover clean water from sludge. [...] The company draws on a process called biomimetic filtration. This process is the subject a growing body of research. "Biomimetic filters, according to Susan Rempe, a principal researcher in the nanobiology department at Sandia National Laboratories in New Mexico, mimic the structure of naturally filtering cellular water membranes," theBusiness Journalreport said. Rempe said the membranes are “exactly the same chemically as those that purify water in the human body, [and which are one of the most efficient purification systems]," the report said."