Non-recycled plastics (NRPs), which make up 12.4 percent of municipal solid waste (MSW), have high value as a feedstock for conversion to energy or fuel because of their potentially significant heating value. (Source: Gershman, Brickner & Bratton/US EPA)
Ann, this was really interesting. The other product of the process, shown in the last slide, is ash. Did your sources say anything about it, such as what volume / weight percentage is it compared to the original feedstock, or if the ash has a use, its toxicity?
I agree, Rob, and Ann has been on top of this. I really like to see the efforts around re-use of material, especially plastic, that would otherwise just become landfill or ocean pollution. If this material was created and used then it makes sense that it can be deconstructed and reused. Thanks for keeping a close eye on these efforts.
Thanks Elizabeth and Rob. This is an area that interests me a lot, because it hits so many different targets: getting non-recycled plastic out of the environment, using waste creatively, re-using some already produced and very expensively-produced energy sources, and making non-petroleum-derived fuel.
TJ searching the PDF of the report on "ash" produced these statements: "The combustion process and cleaning of the gases produce fly and bottom ash, further processed to remove metals for recycling. The ash can be used as alternative daily cover at landfills or as construction aggregate." There's also some further discussion of how ash is created and handled within different up-/down-cross-draft gasification systems.
Elizabeth, I am concerned about the tons of plastic and other wastes being discharged at sea instead of used for energy. I wonder if a gasification plant could be constructed aboard cruise ships, providing fuel energy as well as reducing the overboard waste.
This seems like a very good solution to the problem of plastic but any idea about what is approximate cost of setting up a gasification system and the running cost? It can be a key factor in determining the feasibility of this process?
Last week, the bill for reforming chemical regulation, the TSCA Modernization Act of 2015, passed the House. If it or a similar bill becomes law, the effects on cost and availability of adhesives and plastics incorporating these substances are not yet clear.
The latest crop of coating and sealant materials and devices has impressive credentials. Many are designed for tough environments with broad operating temperature ranges, and they often cure faster, require fewer process steps, and produce less waste.
A new program has been proposed for testing and certify 3D printing filaments for emissions safety. To engineers who've used 3D printers at home this is a no-brainer. It's from a consumer on Kickstarter, and targets use in homes and schools.
For the last 50 years, the Metal Powder Industries Federation (MPIF) has sponsored an awards competition for creative solutions to designing and fabricating near-net-shape parts using powder metal (PM) technologies. Here are the seven Grand Prize winners of the 2015 contest.
Graphene 3D Lab has added graphene to 3DP PLA filament to strengthen the material and add conductivity to prints made with it. The material can be used to 3D print conductive traces embedded in 3D-printed parts for electronics, as well as capacitive touch sensors.
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