Separation of the Engineered Nanoparticles from Industrial Wastewater in the Coating Industry

Co-authors HOLBA Marek

Functional engineered nanoparticles (ENPs) are produced and used in many branches of the industry. Because of its small size, nanoparticles have many specific properties. Nanoparticles are used as pigments in dyes and paints of various industrial applications, catalysts and ceramics, in pharmaceutical agents as well as in specialty chemicals. Nanoparticles are very often applied in wet processes, enter the process waters and lately are released into the environment. ENPs have several advantages and their use is rapidly growing. However, there are serious potential health & safety hazards linked to these substances as well as potential adverse environmental impacts. Therefore there is a need for innovative technologies which can remove ENPs efficiently from wastewater. Our research is focused on removal of nanoparticles from wastewater in the painting industry. The “NANOFLOC” project will develop a novel and cost effective system for removal of Engineered Nano-particles from water used in surface coating. The NanoFloc treatment technology is mainly based on electrocoagulation process. It is based on destabilisation of nano suspensions and agglomeration of charged nanoparticles in suspensions using electric field and flocculation in one step. The task is solved by a consortium of industrial partners and RTDs with a high level of experiences in design and optimization of wastewater treatment technologies, esp. electrochemical processes. Participants include Fraunhofer IGB (GER), Technologisk Institutt AS (NOR), BAMO Mesures (FR), Melotec GmbH (GER), Westmatic AB (SWE) and ASIO, spol. s r.o. (CZE). NanoFloc has received financial support from EU’s FP7 administered by the Research Executive Directorate (REA). The project is coordinated by Westmatic AB and has a duration of 24 months.