Environmental Project's Achievements Reports Query System

Promoting responsible R&D and manufacturing environments of nanotechnology.

Absrtact	In this project, 20 nanotechnology research institutes and manufacturing companies were visited. Based on the visiting results, the results strongly recommended that the researcher or operator should wear mask and glove whenever necessary. Eating and drinking should be prohibited in the working place. In addition, standard procedure of exposure assessment, PPE and control equipment operation was established in this project. They can be used as reference document for Taiwan EPA or other related institutes. Four sampling sites were selected to study environmental nanoparticle number concentration and size distribution. She-Ping and Si-Ta road site is the highest one (5.58×105#/cm3), and Bau-Sang reservoir site is the lowest one. Based on field measurement of ambient environment, nanopowder process environment, and particle control equipment, the size distribution, number concentration, and collection efficiency of nanoparticle emission have been studied and reported. The results show that there are very high concentration of nanoparticle near the cross section of busy roads, it can be as high as 100 times of the concentration in residential area. In nanopowder working environment, there are still some nanoparticle emission. It is recommended that the worker should be trained and wears suitable personal protective equipment. As far as control equipment is concerned, the removal efficiency of nanoparticle for baghouse is 90%. The results can be used as a reference to draft regulation for nanopowder manufacturing process. Thirty respirators selected from three commercial companies were evaluated based on the testing standards of NIOSH 42 CFR Part 84 and CNS 14755 Z2125, they have shown to meet the certified standard. For nanoparticle emission measurement from nanomaterial splitting, TiO2 print material were found to be the highest one (22.8 #/cm3＠55.2nm) in the three selected nanomaterial. Nanomaterial nanoparticle emission should be performed for new material development. Government and research institutes can use the report for future development reference.
Keyword	nanoparticle,risk assessment,environmental management of nanotechnology process,background

Absrtact

In this project, 20 nanotechnology research institutes and manufacturing companies were visited. Based on the visiting results, the results strongly recommended that the researcher or operator should wear mask and glove whenever necessary. Eating and drinking should be prohibited in the working place. In addition, standard procedure of exposure assessment, PPE and control equipment operation was established in this project. They can be used as reference document for Taiwan EPA or other related institutes. Four sampling sites were selected to study environmental nanoparticle number concentration and size distribution. She-Ping and Si-Ta road site is the highest one (5.58×105#/cm3), and Bau-Sang reservoir site is the lowest one. Based on field measurement of ambient environment, nanopowder process environment, and particle control equipment, the size distribution, number concentration, and collection efficiency of nanoparticle emission have been studied and reported. The results show that there are very high concentration of nanoparticle near the cross section of busy roads, it can be as high as 100 times of the concentration in residential area. In nanopowder working environment, there are still some nanoparticle emission. It is recommended that the worker should be trained and wears suitable personal protective equipment. As far as control equipment is concerned, the removal efficiency of nanoparticle for baghouse is 90%. The results can be used as a reference to draft regulation for nanopowder manufacturing process. Thirty respirators selected from three commercial companies were evaluated based on the testing standards of NIOSH 42 CFR Part 84 and CNS 14755 Z2125, they have shown to meet the certified standard. For nanoparticle emission measurement from nanomaterial splitting, TiO2 print material were found to be the highest one (22.8 #/cm3＠55.2nm) in the three selected nanomaterial. Nanomaterial nanoparticle emission should be performed for new material development. Government and research institutes can use the report for future development reference.

Keyword

nanoparticle,risk assessment,environmental management of nanotechnology process,background