Waste bread used to replace fossil fuel hydrogen in carbon-negative chemical manufacturing breakthrough

Circular Online 3 months ago

Researchers at the University of Edinburgh have demonstrated a microbial process that uses waste bread to generate hydrogen for industrial hydrogenation, potentially reducing reliance on fossil fuels across food, pharmaceutical and materials production. The humble breadcrumb could help reduce fossil fuel use in one of the chemical industry’s most widely deployed reactions, according to new research from the University of Edinburgh. Scientists at the university’s Wallace Lab have developed a one-pot microbial system that uses waste bread to generate hydrogen gas for hydrogenation – a reaction central to the manufacture of foods, pharmaceuticals, plastics, fuels and fine chemicals. Hydrogenation
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layersDaily Sustainability Digest

Published about 9 hours ago



The UK’s decision to align its chemicals regulation with the EU has given the construction sector a stable framework crucial for sustainable construction and sustainable building design. By clarifying the approval process for low carbon construction materials and renewable building materials, the move strengthens environmental sustainability in construction and supports the shift towards low carbon design and Whole Life Carbon Assessment.

Such regulation underpins the creation of net zero carbon buildings and accelerates the sector’s transition to net zero Whole Life Carbon through stronger control of embodied carbon in materials.

Government backing of decarbonisation through the £470 million support package for ceramics and chemical factories signals a clear link between industrial policy and the wider Circular Economy in construction. This funding encourages manufacturers to deliver green building materials and eco-friendly construction products with lower embodied carbon, reducing the overall carbon footprint of construction.

As the Science Based Targets initiative refines its corporate standard for embodied and operational carbon reporting, firms will face new pressure to quantify the carbon footprint reduction achieved across building lifecycle performance and Life Cycle Cost analyses.

These developments mark a decisive move toward resource efficiency in construction, end-of-life reuse in construction, and life cycle thinking in construction. Cheap gas no longer dictates design decisions; carbon metrics now govern value, feasibility, and compliance. Green construction is evolving into carbon neutral construction, where lifecycle assessment and whole life carbon strategies define competitive advantage. The direction of travel is clear—the UK’s sustainable construction landscape now integrates sustainable material specification, circular construction strategies, and eco-design for buildings as central to delivery. Sustainability is not an adjunct but the organising principle shaping the environmental impact of construction and the decarbonising of the built environment.

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