Timing, hosts and locations of (grouped) events of NanoImpactNet

5 NanoHouse Reports and Events
5.1 Progress to date
A report on the potential EHS impacts during the life cycle of
façade coatings nanomaterials is achieved and published. This
study is disseminated to a large public through the EC DG
Environment public web site. New strategies in order to
overcome the existing gaps on the life cycle assessment for
engineered nanomaterials are being established. A
precautionary matrix is established in order to estimate the
degree of respect of nanosafety issues. A life cycle model
including production, use and end of life is under development.
In order to be able to identify emission sources, estimation of
ENPs release via the dry and wet route from paint panels
provided by the industrial partners in WP2 were performed.
Coated panels were exposed to indoor and outdoor aging as
UV light, heat and humidity cycles. A Taber standard method for
investigating wear resistance to abrasion by “dry route” was
chosen. The Taber abrasion device was started and coupled to
an aerosol measurement system in order to measure dust
released. Estimation of ENPs release induced by abrasion via the
dry route before and after UV aging and weathering was
achieved for different paints. Experimental and theoretical
study of the release of ENPs just deposited from the surfaces
and nanoparticles from the product matrix were performed.
The particles < 50 nm are trapped on the surfaces by Van der
Waals forces. The release of free nanoparticles is seen only
when nanoparticles are not perfectly dispersed within the
matrix.
A new bench for measuring airborne ENPs released by sanding
from paint panels was set-up. The sanding device was coupled
to an aerosol measurement system in order to measure dust
released. Estimation of ENPs release by sanding is in progress.
Collected information and data were used to define a specific
protocol for leaching tests for the nano-based products
considered in the NanoHouse project. A new bench for
measuring ENPs released by leaching was set-up. Leaching tests
on painted panels, weathered and unweathered coated panels
are in progress.
Radio labelled Ag-nanoparticles and TiO2 fluorescent
nanoparticles have been synthesized. Behaviour of these ENPs
in soils was performed. The penetration of TiO2 and Ag
nanoparticles through the sand columns is determined using
gamma ray and fluorescent detection. The penetration of TiO2
and Ag nanoparticles inside the plants and the transfert of NPs
in plants was estimated by different techniques.
In vitro citotoxicity using Ag, TiO2 and SiO2 nanoparticles was
determined. The effect of these Nanoparticles on human
bronchial epithelial cells was estimated as well.
“Aged” ENP’s (TiO2, SiO2) in high quantities (few grams) for
environmental fate experiments (WP3) and toxicological tests
(both in vivo and in vitro) (WP4) were supplied. The size and
NanoHouse - Compendium 2012
distribution of the particles/agglomerates obtained were
evaluated through SEM, DLS and Laser Granulometer. The aged
ENP behaviour will be compared with the pristine ENP in the
environment and toxicology.
A detailed literature research concerning release of
nanoparticles from the end of life of nano-product was
performed. End of life treatment solutions for waste paints
containing ENP are currently under development. A protocol
for leaching through waste containing nanoparticles was
established. Leaching tests are in progress from paint waste
containing nanoparticles.
Finally, two websites (internal and external) have been
designed (www.nanosmile.org., http://wwwnanohouse.cea.fr/scripts/home/publigen/content/templates/sho
w.asp?P=55&L=EN&ITEMID=2)
5.2 Events
5.2.1 Month-18, 24 meeting
The Month-18 meeting was held in Paris France the 27 th -28 th
June 2011. The Month-24 meeting was held in Leuven Belgium
the 24 th -25 th November 2011.
5.2.2 Other workshops
The NanoHOUSE project has been represented in the
"Nanosafety Cluster" in Lausanne 03/2011 (Peter Wick),
Barcelona 05/2011 (Roland Hischier), Budapest 05/2011 (Peter
Hoet), Rome 11/2011 (L.Golanski, P. Hoet). Nanohouse has been
represented at the 21° SETAC EUROPE ANNUAL MEETING, in
Milan (Italy) May 2011, at the fith International Symposium on
Nanotechnology-Occupational and Environmental Health,
August 9-12, 2011, Boston, USA. The midterm dissemination
workshop will be organized at Dublin within the QNano
conference end of February, 2012.
5.3 Collaboration
NanoHOUSE and NanoSustain projects have established a
collaboration which aims to promote a responsible and
sustainable development of nanomaterials in the building
industry through a Life Cycle Thinking approach. The two
projects have agreed to collaborate on weathering and abrasion
tests. Anne Thoustrup Saber (DK) from the NanoSustain project
sent samples and Dario Cervellati (GFC) carried out weathering
tests. This samples will be abraded at CEA by Arnaud Guiot,
L.Golanski and release will be estimated before and after
wheatering.
Compendium of Projects in the European NanoSafety Cluster 115