The group of scientists led by Jason Unrine, an assistant professor in the UK College of Agriculture, Food and Environment, studied biosolids from a simulated wastewater treatment system containing the nanomaterials silver, titanium dioxide and zinc oxide and examined their effects on plants and microorganisms. Their findings were presented in two papers recently published in the academic journal Environmental Science and Technology.

http://uknow.uky.edu/content/uk-research-reveals-potential-environmental-harm-nanomaterials