Magnetite nanoparticles
(MNPs) have important applications in several
industrial and scientific fields for the remediation of contaminated
soil and water, for instance. Emerging technologies such as microfluidic
techniques have been adapted to continuously synthesize MNPs showing
appealing results, such as a narrower size distribution. Therefore,
this approach might become important for producing MNPs to meet industrial
requirements. In this study, a life cycle assessment (LCA) is conducted
to analyze and evaluate the impacts of the synthesis of MNPs performed
in microfluidic devices. This LCA considers all of the steps required
for MNP production at a laboratory and possible industrial scales.
The LCA results showed that the rivets suitable for device inlets
and outlets and the chemicals required for the synthesis process have
the highest contribution to all impact categories, i.e., 80 and 90%,
respectively. These results thus contribute to determining the overall
environmental performance of each step during the synthesis of MNPs.
The contribution analysis reveals that the manufacturing stage has
a contribution of 97% at the lab scale, while the operation stage
shows a contribution of 82% at the industrial scale. Finally, a sensitivity
analysis is performed to identify the possible scenarios for replacing
rivets required to manufacture microfluidic devices.