New Zealand: University of Canterbury (UC) student Andy (Minhong) Park has developed a biocomposite wall panel that uses seaweed or algae as a bio-filler. Preliminary testing indicates the plasterboard-style product offers similar fire performance to other commercially available products. Using seaweed also provides moisture control properties. The finished seaweed plasterboard product has a glossy marble surface, coloured green, red or brown depending on the type of seaweed used.
“Seaweed is fast-growing at 0.5m/day and is capable of sequestering around 173Mt/yr. It’s easy to cultivate and can be farmed offshore, not competing for farmable land with other bio-based materials, making it an attractive, low-cost farming commodity. Because seaweed can absorb carbon underwater, large wall-panel manufacturers could employ seaweed farming as a carbon offset by growing it,” said Park.
The 12 week project was supervised by UC Product Design Senior Lecturer Dr Tim Huber in collaboration with UC Fire Engineering Lecturer Dr Dennis Pau. While still in the early stages of research, design and testing, the team is working with the UC’s Research and Innovation team to develop a commercialisation plan, and Kaiārahi Rangahau Māori to identify suitable species of seaweed for product development and marine agriculture. The project recently won the UC Innovation Jumpstart Greatest Commercial Potential Award and a US$13,000 prize.
