The world needs a large supply of renewable carbon to replace fossil feedstocks for hard-to-abate sectors like aviation, shipping, chemicals, food and beverage. Arno van den Bos, Karan Kochhar, Luis Janeiro and Francisco Boshell at IRENA present the results of their study to estimate demand, and whether supply can match it through to 2050. The main sources of supply come from alcoholic fermentation, biogas, pulp & paper, and biomass. Each has … [Read more...]
Carbon Dioxide Removal: here’s what the start-ups want from policymakers, partners
The scaling up of a global carbon dioxide removal (CDR) industry is facing significant challenges over proven results and therefore funding. Guy Wohl and Emily Rogers at RMI have interviewed the CEOs of four start-ups who feature in RMI’s Applied Innovation Roadmap (AIR) report for CDR. “Rewind” is developing a biogenic CDR (bCDR) approach that sinks forestry residual plant matter in the Black Sea to store the plant-embedded carbon for centuries. … [Read more...]
Hemp-based building materials: a low-carbon substitute for timber, concrete
How can we lower the lifetime emissions of building materials? Bernardino D'Amico at Edinburgh Napier University references his research to show how hemp-based materials can substitute for concrete. And it’s even more effective than timber, a popular low-carbon alternative. Growing industrial hemp can absorb twice as much COâ‚‚ compared to growing trees. Raw hemp fibre can be processed into panels and mats for thermal or acoustic insulation. Hemp … [Read more...]
Methane emissions underestimated by 25-40%, says new study
The methane in our atmosphere comes from natural biogenic (plants, animals) and fossil sources. By telling the difference we can know how much we humans are responsible for. It matters because methane is a potent greenhouse gas, second only to CO2. Previous “bottom-up” estimates came from multiplying the number of sources (livestock, natural gas operations, landfills) by their likely emissions. Robert McSweeney at Carbon Brief describes a new … [Read more...]
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