Bacterial biofilm supported on granular activated carbon and on natural zeolites- an application to wastewater treatment

摘要

The removal of many heavy metals from industrial wastewater is one of the mostimportant environmental problems to be solved today. The retention of this contaminants by a biofilm supported on granular activated carbon or on natural zeolites is one of the promisingtechnologies for the reduction of this problem, because it is cheap and it removes a broad range of substances, heavy metals and organic compounds.This study aims the development of a system of two mini-columns in series for theremoval of chromium (VI) using a biofilm of Arthrobacter viscosus supported on twodifferent materials: granular activated carbon and natural zeolite. The effect of theregeneration of granular activated carbon was also studied.