RT Conference Proceedings
T1 Evaluation of photocatalytic nanoparticle release to the aquatic environment
A1 Zorita, Saioa
A1 Olabarrieta, Josune
A1 Monzon, Oihane
A1 Rioja, Nerea
A1 Benguria, Pablo
A1 Scifo, Lorette
AB Nanotechnology creates possibilities to produce new products with novel functionalities and improved characteristics. Therefore the incorporation of engineered nanoparticles (ENP) in commercial products is progressively increasing and so is the potential for release of these novel materials into the environment. In fact, the occurrence and release of titanium nanomaterials in a wastewater treatment plant has already been proven. This implies that nanomaterials will reach the aquatic environment and that they could represent a risk to aquatic organisms and humans. We have studied the discharge of nano-TiO2 (nTiO2) to water for two case studies related to photocatalytic nanomaterials: A-The release of nTiO2 from two photocatalytic coatings under accelerated aging under a water flow and B-The release of nTiO2 though a filtration pilot plant from tap water containing 2 mg/L nanoparticles. Case A. The influence of environmental parameters (water matrix, UV-light) was investigated while the consequences of aging were evaluated under different endpoints, among them, the release of TiO2 nanoparticles. Despite that TiO2 emissions were observed for both coatings, only one of them presented mechanical damages. TiO2 concentrations up to 150.5 μg/L were detected in the aging water. Case B. Preliminary experiments were conducted at laboratory scale to determine optimum polymeric material as well as pore size. Among the common commercial materials PVDF showed the best performance. Two different industrial hollow fiber cartridges were tested with a pore size of 0.45 μm (microfiltration) and 0.03 μm (ultrafiltration). TiO2 was detected at an average concentration of 51 μg/L in the filtered water.
PB TANGER Ltd.
SN 9788087294352
YR 2012
FD 2012
LK https://hdl.handle.net/11556/2186
UL https://hdl.handle.net/11556/2186
LA eng
NO Zorita , S , Olabarrieta , J , Monzon , O , Rioja , N , Benguria , P & Scifo , L 2012 , Evaluation of photocatalytic nanoparticle release to the aquatic environment . in NANOCON 2012 - Conference Proceedings, 4th International Conference . NANOCON 2012 - Conference Proceedings, 4th International Conference , TANGER Ltd. , pp. 492-497 , 4th International Conference NANOCON 2012 , Brno , Czech Republic , 23/10/12 .
NO conference
DS TECNALIA Publications
RD 26 jul 2024