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      Characterization of particle emissions and fate of nanomaterials during incineration

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          Abstract

          Incineration as end-of-life treatment for nanowaste has perhaps the greatest potential for transforming nanomaterials in the environment.

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          Most cited references34

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          Exposure Modeling of Engineered Nanoparticles in the Environment

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            Predicted Releases of Engineered Nanomaterials: From Global to Regional to Local

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              Discovery and characterization of silver sulfide nanoparticles in final sewage sludge products.

              Nanosized silver sulfide (α-Ag(2)S) particles were identified in the final stage sewage sludge materials of a full-scale municipal wastewater treatment plant using analytical high-resolution transmission electron microscopy. The Ag(2)S nanocrystals are in the size range of 5-20 nm with ellipsoidal shape, and they form very small, loosely packed aggregates. Some of the Ag(2)S nanoparticles (NPs) have excess S on the surface of the sulfide minerals under S-rich environments, resulting in a ratio of Ag to S close to 1. Considering the current extensive production of Ag NPs and their widespread use in consumer products, it is likely that they are entering wastewater streams and the treatment facilities that process this water. This study suggests that in a reduced, S-rich environment, such as the sedimentation processes during wastewater treatment, nanosized silver sulfides are being formed. This field-scale study provides for the first time nanoparticle-level information of the Ag(2)S present in sewage sludge products, and further suggests the role of wastewater treatment processes on transformation of Ag nanoparticles and ionic Ag potentially released from them.
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                Author and article information

                Journal
                ESNNA4
                Environ. Sci.: Nano
                Environ. Sci.: Nano
                Royal Society of Chemistry (RSC)
                2051-8153
                2051-8161
                2014
                2014
                : 1
                : 2
                : 133-143
                Article
                10.1039/C3EN00080J
                d5714f36-9397-494d-9c17-8efb71262600
                © 2014
                History

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