This biodegradable water bottle could replace plastic


A biodegradable bottle has been created by combining red algae powder with water. The product was part of Ari Jónsson’s project, product design student, who presented it at the Reykjavik design festival DesignMarch from 10 to 13 March, 2016.

He develop a sense of urgency to find a replacement material after reading about the amount of waste plastic produced every day.

I read that 50 per cent of plastic is used once and then thrown away so I feel there is an urgent need to find ways to replace some of the unreal amount of plastic we make, use and throw away each day. Why are we using materials that take hundreds of years to break down in nature to drink from once and then throw away? ~ Ari Jónsson

This biodegradable water bottle could replace plastic

This biodegradable water bottle could replace plastic.

Posted by Hashem Al-Ghaili on Wednesday, October 4, 2017

He began experimenting with different materials to determine what could be suitable for use as a water bottle. Eventually he came across a powdered form of agar, a substance made from algae.

Jjelly-like material forms when agar powder is added to water. After trial and error, he cooked the perfect formula. Jónsson slowly heated the substance before pouring it into a bottle-shaped mould that had been kept in the freezer.


He then rotated the mould while submerged in a bucket of ice-cold water, until the liquid inside has taken the shape of the bottle. It was then placed in a refrigerator for a few minutes before the agar bottle was extracted from the mould.

As long as the bottle is full of water, it will keep its shape, but as soon as it is empty – it will begin to decompose.

“If it fails, or if the bottom is too thin or it has a hole in it, I can just reheat it and pour it into the mould again,” said Jónsson.

As the bottle is made from 100 per cent natural materials, the water stored inside it is safe to drink – although Jónsson noted that after a while it may extract a small amount of taste from the bottle.

Leave a Reply