Professor David Jenkins and Dr Mehreen Gul from Heriot-Watt University. Credit Heriot-Watt University

A two-year study, led by Heriot-Watt University and funded by UK Research and Innovation, is investigating biochar’s use as a sustainable building material in the construction industry. BiocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More, a carbon-negative substance produced through pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More of organic waste, is typically used to enhance soil but has shown promise as an additive in construction materials like concrete, bricks, and insulation. Its benefits include improved insulation, humidity control, and most notably, its ability to sequester carbon.

The construction sector, responsible for nearly 40% of global energy-related emissions, is exploring biochar as a possible solution to reduce its carbon footprint. However, despite small-scale experiments, there is little data on biochar’s performance in real building settings. The study aims to fill this gap by assessing the material’s performance and safety in simulated environments.

Led by Dr. Mehreen Gul, the research involves experts from various disciplines and input from the construction industry. Different types of biochar will be tested for their effectiveness in various building types, with feedback from industry stakeholders guiding the project.

This collaboration hopes to develop a framework for biochar’s commercial use, including pathways to certification. By engaging the construction sector throughout the project, the team aims to co-create solutions that could make biochar a viable, environmentally-friendly building material.

LEARN MORE: Industry set to take key role in biochar research