Biodegradable foam

We have had biodegradable foam peanuts now for some time.

But I am looking at using foam as a lightweight , low cost (hopefully) building material for everything from robots to houses.

The problem is the full life cycle.  How does one dispose of massive amounts of plastic or foam from whole building contrustructed from it.  Cement, and concretes are broken up and reused as filler dumped in to landfill.

The wood is recycled or landfill, today wood is too expensive to just scrap from old buildings.

Metals are easily recycled.

What happens with Fiberglass, and other materials like gypsum board. this is all landfilled, and at least there is nothing toxic leaching out.

I want something I can made model airplane wings from, skyscraper facades from .


https://en.wikipedia.org/wiki/Foam_peanut

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Featured snippet from the web

Biodegradable packing peanuts are made from natural, nontoxic sources, such as wheat and corn starch. They dissolve in water and can be thrown into compost piles after a single use. In addition, biodegradable foam peanuts do not have an electrostatic charge, meaning they will not stick to clothes.

Starch-based packing peanuts

In the early 1990s, starch-based packing peanuts were developed as a more environment-friendly alternative. The starch in the peanuts comes from crop-based sources rather than petroleum-based polystyrene, and is non-toxic. One of the first brands of biodegradable peanuts, Biofoam, is made from the grain sorghum;other brands are made from corn starch. Biodegradable foam peanuts have no electrostatic charge, another benefit over polystyrene. Being biodegradable and nontoxic, they are also safe for humans and pets if ingested accidentally.However, they are not produced in food-safe conditions, and are not recommended for eating. Also, during the manufacturing process, the nutritional value is removed from starch-based packing peanuts. This removes edible components, such as sugars, that would otherwise attract rodents and bugs. Their main drawbacks compared with polystyrene are lower resilience, higher weight (6.5 to 13 g per litre/0.4 to 0.8 lb per cubic foot), dust creation, potential attraction of rodents, and higher price. Starch-based peanuts are soluble in water, and polystyrene peanuts are soluble in acetone, but not vice versa.  Starch based products can be disposed with down the sink, dissolving on contact with the water.





https://greencellfoam.com/

https://www.superbiobag.com/biodegradable-foam/biodegradable-foam.html

This 'Nanowood' Is The Biodegradable Alternative To Styrofoam We Need

https://www.greenmatters.com/news/2018/03/14/Eafh8/nanowood-styrofoam
This is where a new material with the same convenience was developed at the University of Maryland. Nanowood is created from extra wood that’s mixed with cheap chemicals like sodium hydroxide and hydrogen peroxide. These chemicals take out the cell walls and leaves nanofibers of cellulose, or nanowood.

EcoCradle: Can mushroom packaging be the new wave for green purchasing?
http://www.earthtimes.org/going-green/ecocradle-biodegradable-mushroom-packaging/2112/

Biodegradable Styrofoam Made of Milk, Clay
https://www.seeker.com/biodegradable-styrofoam-made-of-milk-clay-discovery-news-1766491327.html
We already have plastics made from corn and sugar. Now, scientists have created a Styrofoam-like material using mostly milk proteins and clay.