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Bottom Ash

Bottom ash is the non-combustible residue of household waste after going through an incinerator. In the Netherlands one person’s household waste produces an average of 57,5 kg of bottom ash per year. This is equal to the average weight of a small woman.

The project investigates the value of what seems to be a grey, lifeless mass. It shows an extensive research showcasing experimental possibilities as well as current applications. The mission of Bottom Ash: changing the way we see a residue such as bottom ash, transforming it from ‘waste’ to a potential material. Creating opportunities for new circular resources and materials, instead of further exploiting our planet’s limited natural resources.

bottom ash


Mineralz BV

Tomaello BV

Twence BV

bottom ash
bottom ash

Photographer: Nicole Marnati

bottom ash

57,5 kg BA. Book

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mail zwart.png
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