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The scarcity of ore and environmental intensity of copper production creates a strong incentive to explore alternative materials for conducting electricity. Single-walled carbon nanotubes (SWCNT) rely on plentiful feedstock materials (i.e., graphite) and exhibit high theoretical conductivity on a per mass basis. However, bulk conductivities measured at the laboratory scale indicate further improvements...
The energy consumed to produce and purify a kilogram of laser vaporization SWCNTs at the laboratory scale was found to be 0.13-0.19 GWh/kg under standard production conditions, with 0.114 GWh/kg coming from electrical energy. Most of the energy consumption results from thermal and resistive losses of the laser and single zone furnace in use. The time and temperature of final oxidation of the material...
Given the uncertain environmental, health, and safety risks for using carbon nanotubes (CNTs), it is prudent to assess the environmental attributes of nanomanufacturing processes using CNTs while in the developmental phase. This information can provide insights for development of safe, economically competitive, and environmentally responsible nanotechnologies. Environmental assessments of manufacturing...
Assessing tradeoffs between nanomanufacturing production, cost, and safety concerns is both difficult and important given the significant uncertainty that exists about exposure effects. A variety of risk assessment models can be developed within this context (used separately and together) to help decision-makers with the difficult task of identifying appropriate or optimal process design, equipment...
Carbon nanotubes (CNTs) demonstrate great promise in a variety of applications such as structural polymers, super capacitors, batteries, sensors, and shielding. This is due to their unique electrical, mechanical, and thermal properties. Despite the desirable qualities commercially and in industry, little information exists on the environmental, health, and safety (EHS) effects of CNTs. Given the EHS...
Due to their unique electrical, thermal, and mechanical properties, single wall carbon nanotubes (SWCNTs) have attracted considerable interest for use in a number of applications such as lithium ion batteries, fuel cells, and conductive wiring. However, the energy required to synthesize and purify SWCNTs in the manufacturing phase must be considered in order to fully realize the benefits in the use...
Despite the many touted benefits of nanotechnology, growing concerns exist regarding the potential environmental, health, and safety (EHS) risks associated with nanomaterials. The number of published research papers in this area has grown significantly in recent years, mostly focused on nanotoxicology. Characterizing the current scientific literature is important for understanding the diversity of...
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